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Merge tag 'for-5.11/block-2020-12-14' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Another series of killing more code than what is being added, again
  thanks to Christoph's relentless cleanups and tech debt tackling.

  This contains:

   - blk-iocost improvements (Baolin Wang)

   - part0 iostat fix (Jeffle Xu)

   - Disable iopoll for split bios (Jeffle Xu)

   - block tracepoint cleanups (Christoph Hellwig)

   - Merging of struct block_device and hd_struct (Christoph Hellwig)

   - Rework/cleanup of how block device sizes are updated (Christoph
     Hellwig)

   - Simplification of gendisk lookup and removal of block device
     aliasing (Christoph Hellwig)

   - Block device ioctl cleanups (Christoph Hellwig)

   - Removal of bdget()/blkdev_get() as exported API (Christoph Hellwig)

   - Disk change rework, avoid ->revalidate_disk() (Christoph Hellwig)

   - sbitmap improvements (Pavel Begunkov)

   - Hybrid polling fix (Pavel Begunkov)

   - bvec iteration improvements (Pavel Begunkov)

   - Zone revalidation fixes (Damien Le Moal)

   - blk-throttle limit fix (Yu Kuai)

   - Various little fixes"

* tag 'for-5.11/block-2020-12-14' of git://git.kernel.dk/linux-block: (126 commits)
  blk-mq: fix msec comment from micro to milli seconds
  blk-mq: update arg in comment of blk_mq_map_queue
  blk-mq: add helper allocating tagset->tags
  Revert "block: Fix a lockdep complaint triggered by request queue flushing"
  nvme-loop: use blk_mq_hctx_set_fq_lock_class to set loop's lock class
  blk-mq: add new API of blk_mq_hctx_set_fq_lock_class
  block: disable iopoll for split bio
  block: Improve blk_revalidate_disk_zones() checks
  sbitmap: simplify wrap check
  sbitmap: replace CAS with atomic and
  sbitmap: remove swap_lock
  sbitmap: optimise sbitmap_deferred_clear()
  blk-mq: skip hybrid polling if iopoll doesn't spin
  blk-iocost: Factor out the base vrate change into a separate function
  blk-iocost: Factor out the active iocgs' state check into a separate function
  blk-iocost: Move the usage ratio calculation to the correct place
  blk-iocost: Remove unnecessary advance declaration
  blk-iocost: Fix some typos in comments
  blktrace: fix up a kerneldoc comment
  block: remove the request_queue to argument request based tracepoints
  ...
This commit is contained in:
Linus Torvalds 2020-12-16 12:57:51 -08:00
commit ac7ac4618c
110 changed files with 2147 additions and 3370 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
block/bio.c
View File

@ -608,13 +608,13 @@ void bio_truncate(struct bio *bio, unsigned new_size)
void guard_bio_eod(struct bio *bio)
{
sector_t maxsector;
struct hd_struct *part;
struct block_device *part;
rcu_read_lock();
part = __disk_get_part(bio->bi_disk, bio->bi_partno);
if (part)
maxsector = part_nr_sects_read(part);
else
maxsector = bdev_nr_sectors(part);
else
maxsector = get_capacity(bio->bi_disk);
rcu_read_unlock();
@ -1212,8 +1212,8 @@ void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter,
flush_dcache_page(dst_bv.bv_page);
bio_advance_iter(src, src_iter, bytes);
bio_advance_iter(dst, dst_iter, bytes);
bio_advance_iter_single(src, src_iter, bytes);
bio_advance_iter_single(dst, dst_iter, bytes);
}
}
EXPORT_SYMBOL(bio_copy_data_iter);

51
block/blk-cgroup.c
View File

@ -556,22 +556,22 @@ static struct blkcg_gq *blkg_lookup_check(struct blkcg *blkcg,
}
/**
* blkg_conf_prep - parse and prepare for per-blkg config update
* blkcg_conf_open_bdev - parse and open bdev for per-blkg config update
* @inputp: input string pointer
*
* Parse the device node prefix part, MAJ:MIN, of per-blkg config update
* from @input and get and return the matching gendisk. *@inputp is
* from @input and get and return the matching bdev. *@inputp is
* updated to point past the device node prefix. Returns an ERR_PTR()
* value on error.
*
* Use this function iff blkg_conf_prep() can't be used for some reason.
*/
struct gendisk *blkcg_conf_get_disk(char **inputp)
struct block_device *blkcg_conf_open_bdev(char **inputp)
{
char *input = *inputp;
unsigned int major, minor;
struct gendisk *disk;
int key_len, part;
struct block_device *bdev;
int key_len;
if (sscanf(input, "%u:%u%n", &major, &minor, &key_len) != 2)
return ERR_PTR(-EINVAL);
@ -581,16 +581,16 @@ struct gendisk *blkcg_conf_get_disk(char **inputp)
return ERR_PTR(-EINVAL);
input = skip_spaces(input);
disk = get_gendisk(MKDEV(major, minor), &part);
if (!disk)
bdev = blkdev_get_no_open(MKDEV(major, minor));
if (!bdev)
return ERR_PTR(-ENODEV);
if (part) {
put_disk_and_module(disk);
if (bdev_is_partition(bdev)) {
blkdev_put_no_open(bdev);
return ERR_PTR(-ENODEV);
}
*inputp = input;
return disk;
return bdev;
}
/**
@ -607,18 +607,18 @@ struct gendisk *blkcg_conf_get_disk(char **inputp)
*/
int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
char *input, struct blkg_conf_ctx *ctx)
__acquires(rcu) __acquires(&disk->queue->queue_lock)
__acquires(rcu) __acquires(&bdev->bd_disk->queue->queue_lock)
{
struct gendisk *disk;
struct block_device *bdev;
struct request_queue *q;
struct blkcg_gq *blkg;
int ret;
disk = blkcg_conf_get_disk(&input);
if (IS_ERR(disk))
return PTR_ERR(disk);
bdev = blkcg_conf_open_bdev(&input);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
q = disk->queue;
q = bdev->bd_disk->queue;
rcu_read_lock();
spin_lock_irq(&q->queue_lock);
@ -689,7 +689,7 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
goto success;
}
success:
ctx->disk = disk;
ctx->bdev = bdev;
ctx->blkg = blkg;
ctx->body = input;
return 0;
@ -700,7 +700,7 @@ fail_unlock:
spin_unlock_irq(&q->queue_lock);
rcu_read_unlock();
fail:
put_disk_and_module(disk);
blkdev_put_no_open(bdev);
/*
* If queue was bypassing, we should retry. Do so after a
* short msleep(). It isn't strictly necessary but queue
@ -723,11 +723,11 @@ EXPORT_SYMBOL_GPL(blkg_conf_prep);
* with blkg_conf_prep().
*/
void blkg_conf_finish(struct blkg_conf_ctx *ctx)
__releases(&ctx->disk->queue->queue_lock) __releases(rcu)
__releases(&ctx->bdev->bd_disk->queue->queue_lock) __releases(rcu)
{
spin_unlock_irq(&ctx->disk->queue->queue_lock);
spin_unlock_irq(&ctx->bdev->bd_disk->queue->queue_lock);
rcu_read_unlock();
put_disk_and_module(ctx->disk);
blkdev_put_no_open(ctx->bdev);
}
EXPORT_SYMBOL_GPL(blkg_conf_finish);
@ -820,9 +820,9 @@ static void blkcg_fill_root_iostats(void)
class_dev_iter_init(&iter, &block_class, NULL, &disk_type);
while ((dev = class_dev_iter_next(&iter))) {
struct gendisk *disk = dev_to_disk(dev);
struct hd_struct *part = disk_get_part(disk, 0);
struct blkcg_gq *blkg = blk_queue_root_blkg(disk->queue);
struct block_device *bdev = dev_to_bdev(dev);
struct blkcg_gq *blkg =
blk_queue_root_blkg(bdev->bd_disk->queue);
struct blkg_iostat tmp;
int cpu;
@ -830,7 +830,7 @@ static void blkcg_fill_root_iostats(void)
for_each_possible_cpu(cpu) {
struct disk_stats *cpu_dkstats;
cpu_dkstats = per_cpu_ptr(part->dkstats, cpu);
cpu_dkstats = per_cpu_ptr(bdev->bd_stats, cpu);
tmp.ios[BLKG_IOSTAT_READ] +=
cpu_dkstats->ios[STAT_READ];
tmp.ios[BLKG_IOSTAT_WRITE] +=
@ -849,7 +849,6 @@ static void blkcg_fill_root_iostats(void)
blkg_iostat_set(&blkg->iostat.cur, &tmp);
u64_stats_update_end(&blkg->iostat.sync);
}
disk_put_part(part);
}
}

70
block/blk-core.c
View File

@ -666,9 +666,9 @@ static int __init setup_fail_make_request(char *str)
}
__setup("fail_make_request=", setup_fail_make_request);
static bool should_fail_request(struct hd_struct *part, unsigned int bytes)
static bool should_fail_request(struct block_device *part, unsigned int bytes)
{
return part->make_it_fail && should_fail(&fail_make_request, bytes);
return part->bd_make_it_fail && should_fail(&fail_make_request, bytes);
}
static int __init fail_make_request_debugfs(void)
@ -683,7 +683,7 @@ late_initcall(fail_make_request_debugfs);
#else /* CONFIG_FAIL_MAKE_REQUEST */
static inline bool should_fail_request(struct hd_struct *part,
static inline bool should_fail_request(struct block_device *part,
unsigned int bytes)
{
return false;
@ -691,11 +691,11 @@ static inline bool should_fail_request(struct hd_struct *part,
#endif /* CONFIG_FAIL_MAKE_REQUEST */
static inline bool bio_check_ro(struct bio *bio, struct hd_struct *part)
static inline bool bio_check_ro(struct bio *bio, struct block_device *part)
{
const int op = bio_op(bio);
if (part->policy && op_is_write(op)) {
if (part->bd_read_only && op_is_write(op)) {
char b[BDEVNAME_SIZE];
if (op_is_flush(bio->bi_opf) && !bio_sectors(bio))
@ -703,7 +703,7 @@ static inline bool bio_check_ro(struct bio *bio, struct hd_struct *part)
WARN_ONCE(1,
"Trying to write to read-only block-device %s (partno %d)\n",
bio_devname(bio, b), part->partno);
bio_devname(bio, b), part->bd_partno);
/* Older lvm-tools actually trigger this */
return false;
}
@ -713,7 +713,7 @@ static inline bool bio_check_ro(struct bio *bio, struct hd_struct *part)
static noinline int should_fail_bio(struct bio *bio)
{
if (should_fail_request(&bio->bi_disk->part0, bio->bi_iter.bi_size))
if (should_fail_request(bio->bi_disk->part0, bio->bi_iter.bi_size))
return -EIO;
return 0;
}
@ -742,7 +742,7 @@ static inline int bio_check_eod(struct bio *bio, sector_t maxsector)
*/
static inline int blk_partition_remap(struct bio *bio)
{
struct hd_struct *p;
struct block_device *p;
int ret = -EIO;
rcu_read_lock();
@ -755,11 +755,12 @@ static inline int blk_partition_remap(struct bio *bio)
goto out;
if (bio_sectors(bio)) {
if (bio_check_eod(bio, part_nr_sects_read(p)))
if (bio_check_eod(bio, bdev_nr_sectors(p)))
goto out;
bio->bi_iter.bi_sector += p->start_sect;
trace_block_bio_remap(bio->bi_disk->queue, bio, part_devt(p),
bio->bi_iter.bi_sector - p->start_sect);
bio->bi_iter.bi_sector += p->bd_start_sect;
trace_block_bio_remap(bio, p->bd_dev,
bio->bi_iter.bi_sector -
p->bd_start_sect);
}
bio->bi_partno = 0;
ret = 0;
@ -829,7 +830,7 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio)
if (unlikely(blk_partition_remap(bio)))
goto end_io;
} else {
if (unlikely(bio_check_ro(bio, &bio->bi_disk->part0)))
if (unlikely(bio_check_ro(bio, bio->bi_disk->part0)))
goto end_io;
if (unlikely(bio_check_eod(bio, get_capacity(bio->bi_disk))))
goto end_io;
@ -906,7 +907,7 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio)
blkcg_bio_issue_init(bio);
if (!bio_flagged(bio, BIO_TRACE_COMPLETION)) {
trace_block_bio_queue(q, bio);
trace_block_bio_queue(bio);
/* Now that enqueuing has been traced, we need to trace
* completion as well.
*/
@ -1201,7 +1202,7 @@ blk_status_t blk_insert_cloned_request(struct request_queue *q, struct request *
return ret;
if (rq->rq_disk &&
should_fail_request(&rq->rq_disk->part0, blk_rq_bytes(rq)))
should_fail_request(rq->rq_disk->part0, blk_rq_bytes(rq)))
return BLK_STS_IOERR;
if (blk_crypto_insert_cloned_request(rq))
@ -1260,17 +1261,18 @@ unsigned int blk_rq_err_bytes(const struct request *rq)
}
EXPORT_SYMBOL_GPL(blk_rq_err_bytes);
static void update_io_ticks(struct hd_struct *part, unsigned long now, bool end)
static void update_io_ticks(struct block_device *part, unsigned long now,
bool end)
{
unsigned long stamp;
again:
stamp = READ_ONCE(part->stamp);
stamp = READ_ONCE(part->bd_stamp);
if (unlikely(stamp != now)) {
if (likely(cmpxchg(&part->stamp, stamp, now) == stamp))
if (likely(cmpxchg(&part->bd_stamp, stamp, now) == stamp))
__part_stat_add(part, io_ticks, end ? now - stamp : 1);
}
if (part->partno) {
part = &part_to_disk(part)->part0;
if (part->bd_partno) {
part = bdev_whole(part);
goto again;
}
}
@ -1279,11 +1281,9 @@ static void blk_account_io_completion(struct request *req, unsigned int bytes)
{
if (req->part && blk_do_io_stat(req)) {
const int sgrp = op_stat_group(req_op(req));
struct hd_struct *part;
part_stat_lock();
part = req->part;
part_stat_add(part, sectors[sgrp], bytes >> 9);
part_stat_add(req->part, sectors[sgrp], bytes >> 9);
part_stat_unlock();
}
}
@ -1298,17 +1298,12 @@ void blk_account_io_done(struct request *req, u64 now)
if (req->part && blk_do_io_stat(req) &&
!(req->rq_flags & RQF_FLUSH_SEQ)) {
const int sgrp = op_stat_group(req_op(req));
struct hd_struct *part;
part_stat_lock();
part = req->part;
update_io_ticks(part, jiffies, true);
part_stat_inc(part, ios[sgrp]);
part_stat_add(part, nsecs[sgrp], now - req->start_time_ns);
update_io_ticks(req->part, jiffies, true);
part_stat_inc(req->part, ios[sgrp]);
part_stat_add(req->part, nsecs[sgrp], now - req->start_time_ns);
part_stat_unlock();
hd_struct_put(part);
}
}
@ -1324,7 +1319,7 @@ void blk_account_io_start(struct request *rq)
part_stat_unlock();
}
static unsigned long __part_start_io_acct(struct hd_struct *part,
static unsigned long __part_start_io_acct(struct block_device *part,
unsigned int sectors, unsigned int op)
{
const int sgrp = op_stat_group(op);
@ -1340,7 +1335,7 @@ static unsigned long __part_start_io_acct(struct hd_struct *part,
return now;
}
unsigned long part_start_io_acct(struct gendisk *disk, struct hd_struct **part,
unsigned long part_start_io_acct(struct gendisk *disk, struct block_device **part,
struct bio *bio)
{
*part = disk_map_sector_rcu(disk, bio->bi_iter.bi_sector);
@ -1352,11 +1347,11 @@ EXPORT_SYMBOL_GPL(part_start_io_acct);
unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors,
unsigned int op)
{
return __part_start_io_acct(&disk->part0, sectors, op);
return __part_start_io_acct(disk->part0, sectors, op);
}
EXPORT_SYMBOL(disk_start_io_acct);
static void __part_end_io_acct(struct hd_struct *part, unsigned int op,
static void __part_end_io_acct(struct block_device *part, unsigned int op,
unsigned long start_time)
{
const int sgrp = op_stat_group(op);
@ -1370,18 +1365,17 @@ static void __part_end_io_acct(struct hd_struct *part, unsigned int op,
part_stat_unlock();
}
void part_end_io_acct(struct hd_struct *part, struct bio *bio,
void part_end_io_acct(struct block_device *part, struct bio *bio,
unsigned long start_time)
{
__part_end_io_acct(part, bio_op(bio), start_time);
hd_struct_put(part);
}
EXPORT_SYMBOL_GPL(part_end_io_acct);
void disk_end_io_acct(struct gendisk *disk, unsigned int op,
unsigned long start_time)
{
__part_end_io_acct(&disk->part0, op, start_time);
__part_end_io_acct(disk->part0, op, start_time);
}
EXPORT_SYMBOL(disk_end_io_acct);

32
block/blk-flush.c
View File

@ -69,7 +69,6 @@
#include <linux/blkdev.h>
#include <linux/gfp.h>
#include <linux/blk-mq.h>
#include <linux/lockdep.h>
#include "blk.h"
#include "blk-mq.h"
@ -139,7 +138,7 @@ static void blk_flush_queue_rq(struct request *rq, bool add_front)
static void blk_account_io_flush(struct request *rq)
{
struct hd_struct *part = &rq->rq_disk->part0;
struct block_device *part = rq->rq_disk->part0;
part_stat_lock();
part_stat_inc(part, ios[STAT_FLUSH]);
@ -474,9 +473,6 @@ struct blk_flush_queue *blk_alloc_flush_queue(int node, int cmd_size,
INIT_LIST_HEAD(&fq->flush_queue[1]);
INIT_LIST_HEAD(&fq->flush_data_in_flight);
lockdep_register_key(&fq->key);
lockdep_set_class(&fq->mq_flush_lock, &fq->key);
return fq;
fail_rq:
@ -491,7 +487,31 @@ void blk_free_flush_queue(struct blk_flush_queue *fq)
if (!fq)
return;
lockdep_unregister_key(&fq->key);
kfree(fq->flush_rq);
kfree(fq);
}
/*
* Allow driver to set its own lock class to fq->mq_flush_lock for
* avoiding lockdep complaint.
*
* flush_end_io() may be called recursively from some driver, such as
* nvme-loop, so lockdep may complain 'possible recursive locking' because
* all 'struct blk_flush_queue' instance share same mq_flush_lock lock class
* key. We need to assign different lock class for these driver's
* fq->mq_flush_lock for avoiding the lockdep warning.
*
* Use dynamically allocated lock class key for each 'blk_flush_queue'
* instance is over-kill, and more worse it introduces horrible boot delay
* issue because synchronize_rcu() is implied in lockdep_unregister_key which
* is called for each hctx release. SCSI probing may synchronously create and
* destroy lots of MQ request_queues for non-existent devices, and some robot
* test kernel always enable lockdep option. It is observed that more than half
* an hour is taken during SCSI MQ probe with per-fq lock class.
*/
void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx,
struct lock_class_key *key)
{
lockdep_set_class(&hctx->fq->mq_flush_lock, key);
}
EXPORT_SYMBOL_GPL(blk_mq_hctx_set_fq_lock_class);

333
block/blk-iocost.c
View File

@ -39,7 +39,7 @@
* On top of that, a size cost proportional to the length of the IO is
* added. While simple, this model captures the operational
* characteristics of a wide varienty of devices well enough. Default
* paramters for several different classes of devices are provided and the
* parameters for several different classes of devices are provided and the
* parameters can be configured from userspace via
* /sys/fs/cgroup/io.cost.model.
*
@ -77,7 +77,7 @@
*
* This constitutes the basis of IO capacity distribution. Each cgroup's
* vtime is running at a rate determined by its hweight. A cgroup tracks
* the vtime consumed by past IOs and can issue a new IO iff doing so
* the vtime consumed by past IOs and can issue a new IO if doing so
* wouldn't outrun the current device vtime. Otherwise, the IO is
* suspended until the vtime has progressed enough to cover it.
*
@ -155,7 +155,7 @@
* Instead of debugfs or other clumsy monitoring mechanisms, this
* controller uses a drgn based monitoring script -
* tools/cgroup/iocost_monitor.py. For details on drgn, please see
* https://github.com/osandov/drgn. The ouput looks like the following.
* https://github.com/osandov/drgn. The output looks like the following.
*
* sdb RUN per=300ms cur_per=234.218:v203.695 busy= +1 vrate= 62.12%
* active weight hweight% inflt% dbt delay usages%
@ -370,8 +370,6 @@ enum {
AUTOP_SSD_FAST,
};
struct ioc_gq;
struct ioc_params {
u32 qos[NR_QOS_PARAMS];
u64 i_lcoefs[NR_I_LCOEFS];
@ -492,7 +490,7 @@ struct ioc_gq {
/*
* `vtime` is this iocg's vtime cursor which progresses as IOs are
* issued. If lagging behind device vtime, the delta represents
* the currently available IO budget. If runnning ahead, the
* the currently available IO budget. If running ahead, the
* overage.
*
* `vtime_done` is the same but progressed on completion rather
@ -973,6 +971,58 @@ done:
ioc->vtime_err = clamp(ioc->vtime_err, -vperiod, vperiod);
}
static void ioc_adjust_base_vrate(struct ioc *ioc, u32 rq_wait_pct,
int nr_lagging, int nr_shortages,
int prev_busy_level, u32 *missed_ppm)
{
u64 vrate = ioc->vtime_base_rate;
u64 vrate_min = ioc->vrate_min, vrate_max = ioc->vrate_max;
if (!ioc->busy_level || (ioc->busy_level < 0 && nr_lagging)) {
if (ioc->busy_level != prev_busy_level || nr_lagging)
trace_iocost_ioc_vrate_adj(ioc, atomic64_read(&ioc->vtime_rate),
missed_ppm, rq_wait_pct,
nr_lagging, nr_shortages);
return;
}
/* rq_wait signal is always reliable, ignore user vrate_min */
if (rq_wait_pct > RQ_WAIT_BUSY_PCT)
vrate_min = VRATE_MIN;
/*
* If vrate is out of bounds, apply clamp gradually as the
* bounds can change abruptly. Otherwise, apply busy_level
* based adjustment.
*/
if (vrate < vrate_min) {
vrate = div64_u64(vrate * (100 + VRATE_CLAMP_ADJ_PCT), 100);
vrate = min(vrate, vrate_min);
} else if (vrate > vrate_max) {
vrate = div64_u64(vrate * (100 - VRATE_CLAMP_ADJ_PCT), 100);
vrate = max(vrate, vrate_max);
} else {
int idx = min_t(int, abs(ioc->busy_level),
ARRAY_SIZE(vrate_adj_pct) - 1);
u32 adj_pct = vrate_adj_pct[idx];
if (ioc->busy_level > 0)
adj_pct = 100 - adj_pct;
else
adj_pct = 100 + adj_pct;
vrate = clamp(DIV64_U64_ROUND_UP(vrate * adj_pct, 100),
vrate_min, vrate_max);
}
trace_iocost_ioc_vrate_adj(ioc, vrate, missed_ppm, rq_wait_pct,
nr_lagging, nr_shortages);
ioc->vtime_base_rate = vrate;
ioc_refresh_margins(ioc);
}
/* take a snapshot of the current [v]time and vrate */
static void ioc_now(struct ioc *ioc, struct ioc_now *now)
{
@ -1046,7 +1096,7 @@ static void __propagate_weights(struct ioc_gq *iocg, u32 active, u32 inuse,
/*
* The delta between inuse and active sums indicates that
* that much of weight is being given away. Parent's inuse
* much of weight is being given away. Parent's inuse
* and active should reflect the ratio.
*/
if (parent->child_active_sum) {
@ -2071,13 +2121,88 @@ static void ioc_forgive_debts(struct ioc *ioc, u64 usage_us_sum, int nr_debtors,
}
}
/*
* Check the active iocgs' state to avoid oversleeping and deactive
* idle iocgs.
*
* Since waiters determine the sleep durations based on the vrate
* they saw at the time of sleep, if vrate has increased, some
* waiters could be sleeping for too long. Wake up tardy waiters
* which should have woken up in the last period and expire idle
* iocgs.
*/
static int ioc_check_iocgs(struct ioc *ioc, struct ioc_now *now)
{
int nr_debtors = 0;
struct ioc_gq *iocg, *tiocg;
list_for_each_entry_safe(iocg, tiocg, &ioc->active_iocgs, active_list) {
if (!waitqueue_active(&iocg->waitq) && !iocg->abs_vdebt &&
!iocg->delay && !iocg_is_idle(iocg))
continue;
spin_lock(&iocg->waitq.lock);
/* flush wait and indebt stat deltas */
if (iocg->wait_since) {
iocg->local_stat.wait_us += now->now - iocg->wait_since;
iocg->wait_since = now->now;
}
if (iocg->indebt_since) {
iocg->local_stat.indebt_us +=
now->now - iocg->indebt_since;
iocg->indebt_since = now->now;
}
if (iocg->indelay_since) {
iocg->local_stat.indelay_us +=
now->now - iocg->indelay_since;
iocg->indelay_since = now->now;
}
if (waitqueue_active(&iocg->waitq) || iocg->abs_vdebt ||
iocg->delay) {
/* might be oversleeping vtime / hweight changes, kick */
iocg_kick_waitq(iocg, true, now);
if (iocg->abs_vdebt || iocg->delay)
nr_debtors++;
} else if (iocg_is_idle(iocg)) {
/* no waiter and idle, deactivate */
u64 vtime = atomic64_read(&iocg->vtime);
s64 excess;
/*
* @iocg has been inactive for a full duration and will
* have a high budget. Account anything above target as
* error and throw away. On reactivation, it'll start
* with the target budget.
*/
excess = now->vnow - vtime - ioc->margins.target;
if (excess > 0) {
u32 old_hwi;
current_hweight(iocg, NULL, &old_hwi);
ioc->vtime_err -= div64_u64(excess * old_hwi,
WEIGHT_ONE);
}
__propagate_weights(iocg, 0, 0, false, now);
list_del_init(&iocg->active_list);
}
spin_unlock(&iocg->waitq.lock);
}
commit_weights(ioc);
return nr_debtors;
}
static void ioc_timer_fn(struct timer_list *timer)
{
struct ioc *ioc = container_of(timer, struct ioc, timer);
struct ioc_gq *iocg, *tiocg;
struct ioc_now now;
LIST_HEAD(surpluses);
int nr_debtors = 0, nr_shortages = 0, nr_lagging = 0;
int nr_debtors, nr_shortages = 0, nr_lagging = 0;
u64 usage_us_sum = 0;
u32 ppm_rthr = MILLION - ioc->params.qos[QOS_RPPM];
u32 ppm_wthr = MILLION - ioc->params.qos[QOS_WPPM];
@ -2099,68 +2224,7 @@ static void ioc_timer_fn(struct timer_list *timer)
return;
}
/*
* Waiters determine the sleep durations based on the vrate they
* saw at the time of sleep. If vrate has increased, some waiters
* could be sleeping for too long. Wake up tardy waiters which
* should have woken up in the last period and expire idle iocgs.
*/
list_for_each_entry_safe(iocg, tiocg, &ioc->active_iocgs, active_list) {
if (!waitqueue_active(&iocg->waitq) && !iocg->abs_vdebt &&
!iocg->delay && !iocg_is_idle(iocg))
continue;
spin_lock(&iocg->waitq.lock);
/* flush wait and indebt stat deltas */
if (iocg->wait_since) {
iocg->local_stat.wait_us += now.now - iocg->wait_since;
iocg->wait_since = now.now;
}
if (iocg->indebt_since) {
iocg->local_stat.indebt_us +=
now.now - iocg->indebt_since;
iocg->indebt_since = now.now;
}
if (iocg->indelay_since) {
iocg->local_stat.indelay_us +=
now.now - iocg->indelay_since;
iocg->indelay_since = now.now;
}
if (waitqueue_active(&iocg->waitq) || iocg->abs_vdebt ||
iocg->delay) {
/* might be oversleeping vtime / hweight changes, kick */
iocg_kick_waitq(iocg, true, &now);
if (iocg->abs_vdebt || iocg->delay)
nr_debtors++;
} else if (iocg_is_idle(iocg)) {
/* no waiter and idle, deactivate */
u64 vtime = atomic64_read(&iocg->vtime);
s64 excess;
/*
* @iocg has been inactive for a full duration and will
* have a high budget. Account anything above target as
* error and throw away. On reactivation, it'll start
* with the target budget.
*/
excess = now.vnow - vtime - ioc->margins.target;
if (excess > 0) {
u32 old_hwi;
current_hweight(iocg, NULL, &old_hwi);
ioc->vtime_err -= div64_u64(excess * old_hwi,
WEIGHT_ONE);
}
__propagate_weights(iocg, 0, 0, false, &now);
list_del_init(&iocg->active_list);
}
spin_unlock(&iocg->waitq.lock);
}
commit_weights(ioc);
nr_debtors = ioc_check_iocgs(ioc, &now);
/*
* Wait and indebt stat are flushed above and the donation calculation
@ -2170,8 +2234,8 @@ static void ioc_timer_fn(struct timer_list *timer)
/* calc usage and see whether some weights need to be moved around */
list_for_each_entry(iocg, &ioc->active_iocgs, active_list) {
u64 vdone, vtime, usage_us, usage_dur;
u32 usage, hw_active, hw_inuse;
u64 vdone, vtime, usage_us;
u32 hw_active, hw_inuse;
/*
* Collect unused and wind vtime closer to vnow to prevent
@ -2202,30 +2266,32 @@ static void ioc_timer_fn(struct timer_list *timer)
usage_us = iocg->usage_delta_us;
usage_us_sum += usage_us;
if (vdone != vtime) {
u64 inflight_us = DIV64_U64_ROUND_UP(
cost_to_abs_cost(vtime - vdone, hw_inuse),
ioc->vtime_base_rate);
usage_us = max(usage_us, inflight_us);
}
/* convert to hweight based usage ratio */
if (time_after64(iocg->activated_at, ioc->period_at))
usage_dur = max_t(u64, now.now - iocg->activated_at, 1);
else
usage_dur = max_t(u64, now.now - ioc->period_at, 1);
usage = clamp_t(u32,
DIV64_U64_ROUND_UP(usage_us * WEIGHT_ONE,
usage_dur),
1, WEIGHT_ONE);
/* see whether there's surplus vtime */
WARN_ON_ONCE(!list_empty(&iocg->surplus_list));
if (hw_inuse < hw_active ||
(!waitqueue_active(&iocg->waitq) &&
time_before64(vtime, now.vnow - ioc->margins.low))) {
u32 hwa, old_hwi, hwm, new_hwi;
u32 hwa, old_hwi, hwm, new_hwi, usage;
u64 usage_dur;
if (vdone != vtime) {
u64 inflight_us = DIV64_U64_ROUND_UP(
cost_to_abs_cost(vtime - vdone, hw_inuse),
ioc->vtime_base_rate);
usage_us = max(usage_us, inflight_us);
}
/* convert to hweight based usage ratio */
if (time_after64(iocg->activated_at, ioc->period_at))
usage_dur = max_t(u64, now.now - iocg->activated_at, 1);
else
usage_dur = max_t(u64, now.now - ioc->period_at, 1);
usage = clamp_t(u32,
DIV64_U64_ROUND_UP(usage_us * WEIGHT_ONE,
usage_dur),
1, WEIGHT_ONE);
/*
* Already donating or accumulated enough to start.
@ -2309,51 +2375,8 @@ static void ioc_timer_fn(struct timer_list *timer)
ioc->busy_level = clamp(ioc->busy_level, -1000, 1000);
if (ioc->busy_level > 0 || (ioc->busy_level < 0 && !nr_lagging)) {
u64 vrate = ioc->vtime_base_rate;
u64 vrate_min = ioc->vrate_min, vrate_max = ioc->vrate_max;
/* rq_wait signal is always reliable, ignore user vrate_min */
if (rq_wait_pct > RQ_WAIT_BUSY_PCT)
vrate_min = VRATE_MIN;
/*
* If vrate is out of bounds, apply clamp gradually as the
* bounds can change abruptly. Otherwise, apply busy_level
* based adjustment.
*/
if (vrate < vrate_min) {
vrate = div64_u64(vrate * (100 + VRATE_CLAMP_ADJ_PCT),
100);
vrate = min(vrate, vrate_min);
} else if (vrate > vrate_max) {
vrate = div64_u64(vrate * (100 - VRATE_CLAMP_ADJ_PCT),
100);
vrate = max(vrate, vrate_max);
} else {
int idx = min_t(int, abs(ioc->busy_level),
ARRAY_SIZE(vrate_adj_pct) - 1);
u32 adj_pct = vrate_adj_pct[idx];
if (ioc->busy_level > 0)
adj_pct = 100 - adj_pct;
else
adj_pct = 100 + adj_pct;
vrate = clamp(DIV64_U64_ROUND_UP(vrate * adj_pct, 100),
vrate_min, vrate_max);
}
trace_iocost_ioc_vrate_adj(ioc, vrate, missed_ppm, rq_wait_pct,
nr_lagging, nr_shortages);
ioc->vtime_base_rate = vrate;
ioc_refresh_margins(ioc);
} else if (ioc->busy_level != prev_busy_level || nr_lagging) {
trace_iocost_ioc_vrate_adj(ioc, atomic64_read(&ioc->vtime_rate),
missed_ppm, rq_wait_pct, nr_lagging,
nr_shortages);
}
ioc_adjust_base_vrate(ioc, rq_wait_pct, nr_lagging, nr_shortages,
prev_busy_level, missed_ppm);
ioc_refresh_params(ioc, false);
@ -2400,7 +2423,7 @@ static u64 adjust_inuse_and_calc_cost(struct ioc_gq *iocg, u64 vtime,
return cost;
/*
* We only increase inuse during period and do so iff the margin has
* We only increase inuse during period and do so if the margin has
* deteriorated since the previous adjustment.
*/
if (margin >= iocg->saved_margin || margin >= margins->low ||
@ -3120,23 +3143,23 @@ static const match_table_t qos_tokens = {
static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
size_t nbytes, loff_t off)
{
struct gendisk *disk;
struct block_device *bdev;
struct ioc *ioc;
u32 qos[NR_QOS_PARAMS];
bool enable, user;
char *p;
int ret;
disk = blkcg_conf_get_disk(&input);
if (IS_ERR(disk))
return PTR_ERR(disk);
bdev = blkcg_conf_open_bdev(&input);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
ioc = q_to_ioc(disk->queue);
ioc = q_to_ioc(bdev->bd_disk->queue);
if (!ioc) {
ret = blk_iocost_init(disk->queue);
ret = blk_iocost_init(bdev->bd_disk->queue);
if (ret)
goto err;
ioc = q_to_ioc(disk->queue);
ioc = q_to_ioc(bdev->bd_disk->queue);
}
spin_lock_irq(&ioc->lock);
@ -3231,12 +3254,12 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
ioc_refresh_params(ioc, true);
spin_unlock_irq(&ioc->lock);
put_disk_and_module(disk);
blkdev_put_no_open(bdev);
return nbytes;
einval:
ret = -EINVAL;
err:
put_disk_and_module(disk);
blkdev_put_no_open(bdev);
return ret;
}
@ -3287,23 +3310,23 @@ static const match_table_t i_lcoef_tokens = {
static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
size_t nbytes, loff_t off)
{
struct gendisk *disk;
struct block_device *bdev;
struct ioc *ioc;
u64 u[NR_I_LCOEFS];
bool user;
char *p;
int ret;
disk = blkcg_conf_get_disk(&input);
if (IS_ERR(disk))
return PTR_ERR(disk);
bdev = blkcg_conf_open_bdev(&input);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
ioc = q_to_ioc(disk->queue);
ioc = q_to_ioc(bdev->bd_disk->queue);
if (!ioc) {
ret = blk_iocost_init(disk->queue);
ret = blk_iocost_init(bdev->bd_disk->queue);
if (ret)
goto err;
ioc = q_to_ioc(disk->queue);
ioc = q_to_ioc(bdev->bd_disk->queue);
}
spin_lock_irq(&ioc->lock);
@ -3356,13 +3379,13 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
ioc_refresh_params(ioc, true);
spin_unlock_irq(&ioc->lock);
put_disk_and_module(disk);
blkdev_put_no_open(bdev);
return nbytes;
einval:
ret = -EINVAL;
err:
put_disk_and_module(disk);
blkdev_put_no_open(bdev);
return ret;
}

2
block/blk-lib.c
View File

@ -65,7 +65,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
/* In case the discard request is in a partition */
if (bdev_is_partition(bdev))
part_offset = bdev->bd_part->start_sect;
part_offset = bdev->bd_start_sect;
while (nr_sects) {
sector_t granularity_aligned_lba, req_sects;

18
block/blk-merge.c
View File

@ -279,6 +279,14 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
return NULL;
split:
*segs = nsegs;
/*
* Bio splitting may cause subtle trouble such as hang when doing sync
* iopoll in direct IO routine. Given performance gain of iopoll for
* big IO can be trival, disable iopoll when split needed.
*/
bio->bi_opf &= ~REQ_HIPRI;
return bio_split(bio, sectors, GFP_NOIO, bs);
}
@ -338,7 +346,7 @@ void __blk_queue_split(struct bio **bio, unsigned int *nr_segs)
split->bi_opf |= REQ_NOMERGE;
bio_chain(split, *bio);
trace_block_split(q, split, (*bio)->bi_iter.bi_sector);
trace_block_split(split, (*bio)->bi_iter.bi_sector);
submit_bio_noacct(*bio);
*bio = split;
}
@ -683,8 +691,6 @@ static void blk_account_io_merge_request(struct request *req)
part_stat_lock();
part_stat_inc(req->part, merges[op_stat_group(req_op(req))]);
part_stat_unlock();
hd_struct_put(req->part);
}
}
@ -801,7 +807,7 @@ static struct request *attempt_merge(struct request_queue *q,
*/
blk_account_io_merge_request(next);
trace_block_rq_merge(q, next);
trace_block_rq_merge(next);
/*
* ownership of bio passed from next to req, return 'next' for
@ -924,7 +930,7 @@ static enum bio_merge_status bio_attempt_back_merge(struct request *req,
if (!ll_back_merge_fn(req, bio, nr_segs))
return BIO_MERGE_FAILED;
trace_block_bio_backmerge(req->q, req, bio);
trace_block_bio_backmerge(bio);
rq_qos_merge(req->q, req, bio);
if ((req->cmd_flags & REQ_FAILFAST_MASK) != ff)
@ -948,7 +954,7 @@ static enum bio_merge_status bio_attempt_front_merge(struct request *req,
if (!ll_front_merge_fn(req, bio, nr_segs))
return BIO_MERGE_FAILED;
trace_block_bio_frontmerge(req->q, req, bio);
trace_block_bio_frontmerge(bio);
rq_qos_merge(req->q, req, bio);
if ((req->cmd_flags & REQ_FAILFAST_MASK) != ff)

2
block/blk-mq-sched.c
View File

@ -386,7 +386,7 @@ EXPORT_SYMBOL_GPL(blk_mq_sched_try_insert_merge);
void blk_mq_sched_request_inserted(struct request *rq)
{
trace_block_rq_insert(rq->q, rq);
trace_block_rq_insert(rq);
}
EXPORT_SYMBOL_GPL(blk_mq_sched_request_inserted);

46
block/blk-mq.c
View File

@ -95,7 +95,7 @@ static void blk_mq_hctx_clear_pending(struct blk_mq_hw_ctx *hctx,
}
struct mq_inflight {
struct hd_struct *part;
struct block_device *part;
unsigned int inflight[2];
};
@ -105,13 +105,15 @@ static bool blk_mq_check_inflight(struct blk_mq_hw_ctx *hctx,
{
struct mq_inflight *mi = priv;
if (rq->part == mi->part && blk_mq_rq_state(rq) == MQ_RQ_IN_FLIGHT)
if ((!mi->part->bd_partno || rq->part == mi->part) &&
blk_mq_rq_state(rq) == MQ_RQ_IN_FLIGHT)
mi->inflight[rq_data_dir(rq)]++;
return true;
}
unsigned int blk_mq_in_flight(struct request_queue *q, struct hd_struct *part)
unsigned int blk_mq_in_flight(struct request_queue *q,
struct block_device *part)
{
struct mq_inflight mi = { .part = part };
@ -120,8 +122,8 @@ unsigned int blk_mq_in_flight(struct request_queue *q, struct hd_struct *part)
return mi.inflight[0] + mi.inflight[1];
}
void blk_mq_in_flight_rw(struct request_queue *q, struct hd_struct *part,
unsigned int inflight[2])
void blk_mq_in_flight_rw(struct request_queue *q, struct block_device *part,
unsigned int inflight[2])
{
struct mq_inflight mi = { .part = part };
@ -729,7 +731,7 @@ void blk_mq_start_request(struct request *rq)
{
struct request_queue *q = rq->q;
trace_block_rq_issue(q, rq);
trace_block_rq_issue(rq);
if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) {
rq->io_start_time_ns = ktime_get_ns();
@ -756,7 +758,7 @@ static void __blk_mq_requeue_request(struct request *rq)
blk_mq_put_driver_tag(rq);
trace_block_rq_requeue(q, rq);
trace_block_rq_requeue(rq);
rq_qos_requeue(q, rq);
if (blk_mq_request_started(rq)) {
@ -1590,7 +1592,7 @@ select_cpu:
* __blk_mq_delay_run_hw_queue - Run (or schedule to run) a hardware queue.
* @hctx: Pointer to the hardware queue to run.
* @async: If we want to run the queue asynchronously.
* @msecs: Microseconds of delay to wait before running the queue.
* @msecs: Milliseconds of delay to wait before running the queue.
*
* If !@async, try to run the queue now. Else, run the queue asynchronously and
* with a delay of @msecs.
@ -1619,7 +1621,7 @@ static void __blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async,
/**
* blk_mq_delay_run_hw_queue - Run a hardware queue asynchronously.
* @hctx: Pointer to the hardware queue to run.
* @msecs: Microseconds of delay to wait before running the queue.
* @msecs: Milliseconds of delay to wait before running the queue.
*
* Run a hardware queue asynchronously with a delay of @msecs.
*/
@ -1683,7 +1685,7 @@ EXPORT_SYMBOL(blk_mq_run_hw_queues);
/**
* blk_mq_delay_run_hw_queues - Run all hardware queues asynchronously.
* @q: Pointer to the request queue to run.
* @msecs: Microseconds of delay to wait before running the queues.
* @msecs: Milliseconds of delay to wait before running the queues.
*/
void blk_mq_delay_run_hw_queues(struct request_queue *q, unsigned long msecs)
{
@ -1817,7 +1819,7 @@ static inline void __blk_mq_insert_req_list(struct blk_mq_hw_ctx *hctx,
lockdep_assert_held(&ctx->lock);
trace_block_rq_insert(hctx->queue, rq);
trace_block_rq_insert(rq);
if (at_head)
list_add(&rq->queuelist, &ctx->rq_lists[type]);
@ -1874,7 +1876,7 @@ void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
*/
list_for_each_entry(rq, list, queuelist) {
BUG_ON(rq->mq_ctx != ctx);
trace_block_rq_insert(hctx->queue, rq);
trace_block_rq_insert(rq);
}
spin_lock(&ctx->lock);
@ -2155,6 +2157,7 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio)
unsigned int nr_segs;
blk_qc_t cookie;
blk_status_t ret;
bool hipri;
blk_queue_bounce(q, &bio);
__blk_queue_split(&bio, &nr_segs);
@ -2171,6 +2174,8 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio)
rq_qos_throttle(q, bio);
hipri = bio->bi_opf & REQ_HIPRI;
data.cmd_flags = bio->bi_opf;
rq = __blk_mq_alloc_request(&data);
if (unlikely(!rq)) {
@ -2180,7 +2185,7 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio)
goto queue_exit;
}
trace_block_getrq(q, bio, bio->bi_opf);
trace_block_getrq(bio);
rq_qos_track(q, rq, bio);
@ -2263,6 +2268,8 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio)
blk_mq_sched_insert_request(rq, false, true, true);
}
if (!hipri)
return BLK_QC_T_NONE;
return cookie;
queue_exit:
blk_queue_exit(q);
@ -3373,6 +3380,12 @@ static int blk_mq_realloc_tag_set_tags(struct blk_mq_tag_set *set,
return 0;
}
static int blk_mq_alloc_tag_set_tags(struct blk_mq_tag_set *set,
int new_nr_hw_queues)
{
return blk_mq_realloc_tag_set_tags(set, 0, new_nr_hw_queues);
}
/*
* Alloc a tag set to be associated with one or more request queues.
* May fail with EINVAL for various error conditions. May adjust the
@ -3426,7 +3439,7 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set)
if (set->nr_maps == 1 && set->nr_hw_queues > nr_cpu_ids)
set->nr_hw_queues = nr_cpu_ids;
if (blk_mq_realloc_tag_set_tags(set, 0, set->nr_hw_queues) < 0)
if (blk_mq_alloc_tag_set_tags(set, set->nr_hw_queues) < 0)
return -ENOMEM;
ret = -ENOMEM;
@ -3861,9 +3874,10 @@ int blk_poll(struct request_queue *q, blk_qc_t cookie, bool spin)
* the state. Like for the other success return cases, the
* caller is responsible for checking if the IO completed. If
* the IO isn't complete, we'll get called again and will go
* straight to the busy poll loop.
* straight to the busy poll loop. If specified not to spin,
* we also should not sleep.
*/
if (blk_mq_poll_hybrid(q, hctx, cookie))
if (spin && blk_mq_poll_hybrid(q, hctx, cookie))
return 1;
hctx->poll_considered++;

9
block/blk-mq.h
View File

@ -99,7 +99,7 @@ static inline struct blk_mq_hw_ctx *blk_mq_map_queue_type(struct request_queue *
* blk_mq_map_queue() - map (cmd_flags,type) to hardware queue
* @q: request queue
* @flags: request command flags
* @cpu: cpu ctx
* @ctx: software queue cpu ctx
*/
static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q,
unsigned int flags,
@ -182,9 +182,10 @@ static inline bool blk_mq_hw_queue_mapped(struct blk_mq_hw_ctx *hctx)
return hctx->nr_ctx && hctx->tags;
}
unsigned int blk_mq_in_flight(struct request_queue *q, struct hd_struct *part);
void blk_mq_in_flight_rw(struct request_queue *q, struct hd_struct *part,
unsigned int inflight[2]);
unsigned int blk_mq_in_flight(struct request_queue *q,
struct block_device *part);
void blk_mq_in_flight_rw(struct request_queue *q, struct block_device *part,
unsigned int inflight[2]);
static inline void blk_mq_put_dispatch_budget(struct request_queue *q)
{

6
block/blk-throttle.c
View File

@ -587,6 +587,7 @@ static void throtl_pd_online(struct blkg_policy_data *pd)
tg_update_has_rules(tg);
}
#ifdef CONFIG_BLK_DEV_THROTTLING_LOW
static void blk_throtl_update_limit_valid(struct throtl_data *td)
{
struct cgroup_subsys_state *pos_css;
@ -607,6 +608,11 @@ static void blk_throtl_update_limit_valid(struct throtl_data *td)
td->limit_valid[LIMIT_LOW] = low_valid;
}
#else
static inline void blk_throtl_update_limit_valid(struct throtl_data *td)
{
}
#endif
static void throtl_upgrade_state(struct throtl_data *td);
static void throtl_pd_offline(struct blkg_policy_data *pd)

1
block/blk-wbt.c
View File

@ -835,7 +835,6 @@ int wbt_init(struct request_queue *q)
rwb->enable_state = WBT_STATE_ON_DEFAULT;
rwb->wc = 1;
rwb->rq_depth.default_depth = RWB_DEF_DEPTH;
wbt_update_limits(rwb);
/*
* Assign rwb and add the stats callback.

16
block/blk-zoned.c
View File

@ -508,15 +508,29 @@ int blk_revalidate_disk_zones(struct gendisk *disk,
noio_flag = memalloc_noio_save();
ret = disk->fops->report_zones(disk, 0, UINT_MAX,
blk_revalidate_zone_cb, &args);
if (!ret) {
pr_warn("%s: No zones reported\n", disk->disk_name);
ret = -ENODEV;
}
memalloc_noio_restore(noio_flag);
/*
* If zones where reported, make sure that the entire disk capacity
* has been checked.
*/
if (ret > 0 && args.sector != get_capacity(disk)) {
pr_warn("%s: Missing zones from sector %llu\n",
disk->disk_name, args.sector);
ret = -ENODEV;
}
/*
* Install the new bitmaps and update nr_zones only once the queue is
* stopped and all I/Os are completed (i.e. a scheduler is not
* referencing the bitmaps).
*/
blk_mq_freeze_queue(q);
if (ret >= 0) {
if (ret > 0) {
blk_queue_chunk_sectors(q, args.zone_sectors);
q->nr_zones = args.nr_zones;
swap(q->seq_zones_wlock, args.seq_zones_wlock);

85
block/blk.h
View File

@ -25,7 +25,6 @@ struct blk_flush_queue {
struct list_head flush_data_in_flight;
struct request *flush_rq;
struct lock_class_key key;
spinlock_t mq_flush_lock;
};
@ -215,7 +214,7 @@ static inline void elevator_exit(struct request_queue *q,
__elevator_exit(q, e);
}
struct hd_struct *__disk_get_part(struct gendisk *disk, int partno);
struct block_device *__disk_get_part(struct gendisk *disk, int partno);
ssize_t part_size_show(struct device *dev, struct device_attribute *attr,
char *buf);
@ -348,97 +347,21 @@ void blk_queue_free_zone_bitmaps(struct request_queue *q);
static inline void blk_queue_free_zone_bitmaps(struct request_queue *q) {}
#endif
struct hd_struct *disk_map_sector_rcu(struct gendisk *disk, sector_t sector);
struct block_device *disk_map_sector_rcu(struct gendisk *disk, sector_t sector);
int blk_alloc_devt(struct hd_struct *part, dev_t *devt);
int blk_alloc_devt(struct block_device *part, dev_t *devt);
void blk_free_devt(dev_t devt);
void blk_invalidate_devt(dev_t devt);
char *disk_name(struct gendisk *hd, int partno, char *buf);
#define ADDPART_FLAG_NONE 0
#define ADDPART_FLAG_RAID 1
#define ADDPART_FLAG_WHOLEDISK 2
void delete_partition(struct hd_struct *part);
void delete_partition(struct block_device *part);
int bdev_add_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length);
int bdev_del_partition(struct block_device *bdev, int partno);
int bdev_resize_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length);
int disk_expand_part_tbl(struct gendisk *disk, int target);
int hd_ref_init(struct hd_struct *part);
/* no need to get/put refcount of part0 */
static inline int hd_struct_try_get(struct hd_struct *part)
{
if (part->partno)
return percpu_ref_tryget_live(&part->ref);
return 1;
}
static inline void hd_struct_put(struct hd_struct *part)
{
if (part->partno)
percpu_ref_put(&part->ref);
}
static inline void hd_free_part(struct hd_struct *part)
{
free_percpu(part->dkstats);
kfree(part->info);
percpu_ref_exit(&part->ref);
}
/*
* Any access of part->nr_sects which is not protected by partition
* bd_mutex or gendisk bdev bd_mutex, should be done using this
* accessor function.
*
* Code written along the lines of i_size_read() and i_size_write().
* CONFIG_PREEMPTION case optimizes the case of UP kernel with preemption
* on.
*/
static inline sector_t part_nr_sects_read(struct hd_struct *part)
{
#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
sector_t nr_sects;
unsigned seq;
do {
seq = read_seqcount_begin(&part->nr_sects_seq);
nr_sects = part->nr_sects;
} while (read_seqcount_retry(&part->nr_sects_seq, seq));
return nr_sects;
#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPTION)
sector_t nr_sects;
preempt_disable();
nr_sects = part->nr_sects;
preempt_enable();
return nr_sects;
#else
return part->nr_sects;
#endif
}
/*
* Should be called with mutex lock held (typically bd_mutex) of partition
* to provide mutual exlusion among writers otherwise seqcount might be
* left in wrong state leaving the readers spinning infinitely.
*/
static inline void part_nr_sects_write(struct hd_struct *part, sector_t size)
{
#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
preempt_disable();
write_seqcount_begin(&part->nr_sects_seq);
part->nr_sects = size;
write_seqcount_end(&part->nr_sects_seq);
preempt_enable();
#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPTION)
preempt_disable();
part->nr_sects = size;
preempt_enable();
#else
part->nr_sects = size;
#endif
}
int bio_add_hw_page(struct request_queue *q, struct bio *bio,
struct page *page, unsigned int len, unsigned int offset,

2
block/bounce.c
View File

@ -340,7 +340,7 @@ static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
}
}
trace_block_bio_bounce(q, *bio_orig);
trace_block_bio_bounce(*bio_orig);
bio->bi_flags |= (1 << BIO_BOUNCED);

565
block/genhd.c
View File

File diff suppressed because it is too large Load Diff

74
block/ioctl.c
View File

@ -35,15 +35,6 @@ static int blkpg_do_ioctl(struct block_device *bdev,
start = p.start >> SECTOR_SHIFT;
length = p.length >> SECTOR_SHIFT;
/* check for fit in a hd_struct */
if (sizeof(sector_t) < sizeof(long long)) {
long pstart = start, plength = length;
if (pstart != start || plength != length || pstart < 0 ||
plength < 0 || p.pno > 65535)
return -EINVAL;
}
switch (op) {
case BLKPG_ADD_PARTITION:
/* check if partition is aligned to blocksize */
@ -219,23 +210,6 @@ static int compat_put_ulong(compat_ulong_t __user *argp, compat_ulong_t val)
}
#endif
int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
struct gendisk *disk = bdev->bd_disk;
if (disk->fops->ioctl)
return disk->fops->ioctl(bdev, mode, cmd, arg);
return -ENOTTY;
}
/*
* For the record: _GPL here is only because somebody decided to slap it
* on the previous export. Sheer idiocy, since it wasn't copyrightable
* at all and could be open-coded without any exports by anybody who cares.
*/
EXPORT_SYMBOL_GPL(__blkdev_driver_ioctl);
#ifdef CONFIG_COMPAT
/*
* This is the equivalent of compat_ptr_ioctl(), to be used by block
@ -346,38 +320,11 @@ static int blkdev_pr_clear(struct block_device *bdev,
return ops->pr_clear(bdev, c.key);
}
/*
* Is it an unrecognized ioctl? The correct returns are either
* ENOTTY (final) or ENOIOCTLCMD ("I don't know this one, try a
* fallback"). ENOIOCTLCMD gets turned into ENOTTY by the ioctl
* code before returning.
*
* Confused drivers sometimes return EINVAL, which is wrong. It
* means "I understood the ioctl command, but the parameters to
* it were wrong".
*
* We should aim to just fix the broken drivers, the EINVAL case
* should go away.
*/
static inline int is_unrecognized_ioctl(int ret)
{
return ret == -EINVAL ||
ret == -ENOTTY ||
ret == -ENOIOCTLCMD;
}
static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
int ret;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
if (!is_unrecognized_ioctl(ret))
return ret;
fsync_bdev(bdev);
invalidate_bdev(bdev);
return 0;
@ -391,12 +338,14 @@ static int blkdev_roset(struct block_device *bdev, fmode_t mode,
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
if (!is_unrecognized_ioctl(ret))
return ret;
if (get_user(n, (int __user *)arg))
return -EFAULT;
set_device_ro(bdev, n);
if (bdev->bd_disk->fops->set_read_only) {
ret = bdev->bd_disk->fops->set_read_only(bdev, n);
if (ret)
return ret;
}
bdev->bd_read_only = n;
return 0;
}
@ -619,10 +568,12 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
}
ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);
if (ret == -ENOIOCTLCMD)
return __blkdev_driver_ioctl(bdev, mode, cmd, arg);
if (ret != -ENOIOCTLCMD)
return ret;
return ret;
if (!bdev->bd_disk->fops->ioctl)
return -ENOTTY;
return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
}
EXPORT_SYMBOL_GPL(blkdev_ioctl); /* for /dev/raw */
@ -639,8 +590,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
int ret;
void __user *argp = compat_ptr(arg);
struct inode *inode = file->f_mapping->host;
struct block_device *bdev = inode->i_bdev;
struct block_device *bdev = I_BDEV(file->f_mapping->host);
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
loff_t size;

248
block/partitions/core.c
View File

@ -85,6 +85,13 @@ static int (*check_part[])(struct parsed_partitions *) = {
NULL
};
static void bdev_set_nr_sectors(struct block_device *bdev, sector_t sectors)
{
spin_lock(&bdev->bd_size_lock);
i_size_write(bdev->bd_inode, (loff_t)sectors << SECTOR_SHIFT);
spin_unlock(&bdev->bd_size_lock);
}
static struct parsed_partitions *allocate_partitions(struct gendisk *hd)
{
struct parsed_partitions *state;
@ -175,44 +182,39 @@ static struct parsed_partitions *check_partition(struct gendisk *hd,
static ssize_t part_partition_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hd_struct *p = dev_to_part(dev);
return sprintf(buf, "%d\n", p->partno);
return sprintf(buf, "%d\n", dev_to_bdev(dev)->bd_partno);
}
static ssize_t part_start_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hd_struct *p = dev_to_part(dev);
return sprintf(buf, "%llu\n",(unsigned long long)p->start_sect);
return sprintf(buf, "%llu\n", dev_to_bdev(dev)->bd_start_sect);
}
static ssize_t part_ro_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hd_struct *p = dev_to_part(dev);
return sprintf(buf, "%d\n", p->policy ? 1 : 0);
return sprintf(buf, "%d\n", dev_to_bdev(dev)->bd_read_only);
}
static ssize_t part_alignment_offset_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hd_struct *p = dev_to_part(dev);
struct block_device *bdev = dev_to_bdev(dev);
return sprintf(buf, "%u\n",
queue_limit_alignment_offset(&part_to_disk(p)->queue->limits,
p->start_sect));
queue_limit_alignment_offset(&bdev->bd_disk->queue->limits,
bdev->bd_start_sect));
}
static ssize_t part_discard_alignment_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hd_struct *p = dev_to_part(dev);
struct block_device *bdev = dev_to_bdev(dev);
return sprintf(buf, "%u\n",
queue_limit_discard_alignment(&part_to_disk(p)->queue->limits,
p->start_sect));
queue_limit_discard_alignment(&bdev->bd_disk->queue->limits,
bdev->bd_start_sect));
}
static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
@ -257,19 +259,17 @@ static const struct attribute_group *part_attr_groups[] = {
static void part_release(struct device *dev)
{
struct hd_struct *p = dev_to_part(dev);
blk_free_devt(dev->devt);
hd_free_part(p);
kfree(p);
bdput(dev_to_bdev(dev));
}
static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct hd_struct *part = dev_to_part(dev);
struct block_device *part = dev_to_bdev(dev);
add_uevent_var(env, "PARTN=%u", part->partno);
if (part->info && part->info->volname[0])
add_uevent_var(env, "PARTNAME=%s", part->info->volname);
add_uevent_var(env, "PARTN=%u", part->bd_partno);
if (part->bd_meta_info && part->bd_meta_info->volname[0])
add_uevent_var(env, "PARTNAME=%s", part->bd_meta_info->volname);
return 0;
}
@ -280,73 +280,29 @@ struct device_type part_type = {
.uevent = part_uevent,
};
static void hd_struct_free_work(struct work_struct *work)
{
struct hd_struct *part =
container_of(to_rcu_work(work), struct hd_struct, rcu_work);
struct gendisk *disk = part_to_disk(part);
/*
* Release the disk reference acquired in delete_partition here.
* We can't release it in hd_struct_free because the final put_device
* needs process context and thus can't be run directly from a
* percpu_ref ->release handler.
*/
put_device(disk_to_dev(disk));
part->start_sect = 0;
part->nr_sects = 0;
part_stat_set_all(part, 0);
put_device(part_to_dev(part));
}
static void hd_struct_free(struct percpu_ref *ref)
{
struct hd_struct *part = container_of(ref, struct hd_struct, ref);
struct gendisk *disk = part_to_disk(part);
struct disk_part_tbl *ptbl =
rcu_dereference_protected(disk->part_tbl, 1);
rcu_assign_pointer(ptbl->last_lookup, NULL);
INIT_RCU_WORK(&part->rcu_work, hd_struct_free_work);
queue_rcu_work(system_wq, &part->rcu_work);
}
int hd_ref_init(struct hd_struct *part)
{
if (percpu_ref_init(&part->ref, hd_struct_free, 0, GFP_KERNEL))
return -ENOMEM;
return 0;
}
/*
* Must be called either with bd_mutex held, before a disk can be opened or
* after all disk users are gone.
*/
void delete_partition(struct hd_struct *part)
void delete_partition(struct block_device *part)
{
struct gendisk *disk = part_to_disk(part);
struct gendisk *disk = part->bd_disk;
struct disk_part_tbl *ptbl =
rcu_dereference_protected(disk->part_tbl, 1);
/*
* ->part_tbl is referenced in this part's release handler, so
* we have to hold the disk device
*/
get_device(disk_to_dev(disk));
rcu_assign_pointer(ptbl->part[part->partno], NULL);
kobject_put(part->holder_dir);
device_del(part_to_dev(part));
rcu_assign_pointer(ptbl->part[part->bd_partno], NULL);
rcu_assign_pointer(ptbl->last_lookup, NULL);
kobject_put(part->bd_holder_dir);
device_del(&part->bd_device);
/*
* Remove gendisk pointer from idr so that it cannot be looked up
* while RCU period before freeing gendisk is running to prevent
* use-after-free issues. Note that the device number stays
* "in-use" until we really free the gendisk.
* Remove the block device from the inode hash, so that it cannot be
* looked up any more even when openers still hold references.
*/
blk_invalidate_devt(part_devt(part));
percpu_ref_kill(&part->ref);
remove_inode_hash(part->bd_inode);
put_device(&part->bd_device);
}
static ssize_t whole_disk_show(struct device *dev,
@ -360,14 +316,14 @@ static DEVICE_ATTR(whole_disk, 0444, whole_disk_show, NULL);
* Must be called either with bd_mutex held, before a disk can be opened or
* after all disk users are gone.
*/
static struct hd_struct *add_partition(struct gendisk *disk, int partno,
static struct block_device *add_partition(struct gendisk *disk, int partno,
sector_t start, sector_t len, int flags,
struct partition_meta_info *info)
{
struct hd_struct *p;
dev_t devt = MKDEV(0, 0);
struct device *ddev = disk_to_dev(disk);
struct device *pdev;
struct block_device *bdev;
struct disk_part_tbl *ptbl;
const char *dname;
int err;
@ -398,36 +354,22 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
if (ptbl->part[partno])
return ERR_PTR(-EBUSY);
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return ERR_PTR(-EBUSY);
bdev = bdev_alloc(disk, partno);
if (!bdev)
return ERR_PTR(-ENOMEM);
p->dkstats = alloc_percpu(struct disk_stats);
if (!p->dkstats) {
err = -ENOMEM;
goto out_free;
}
hd_sects_seq_init(p);
pdev = part_to_dev(p);
p->start_sect = start;
p->nr_sects = len;
p->partno = partno;
p->policy = get_disk_ro(disk);
bdev->bd_start_sect = start;
bdev_set_nr_sectors(bdev, len);
bdev->bd_read_only = get_disk_ro(disk);
if (info) {
struct partition_meta_info *pinfo;
pinfo = kzalloc_node(sizeof(*pinfo), GFP_KERNEL, disk->node_id);
if (!pinfo) {
err = -ENOMEM;
goto out_free_stats;
}
memcpy(pinfo, info, sizeof(*info));
p->info = pinfo;
err = -ENOMEM;
bdev->bd_meta_info = kmemdup(info, sizeof(*info), GFP_KERNEL);
if (!bdev->bd_meta_info)
goto out_bdput;
}
pdev = &bdev->bd_device;
dname = dev_name(ddev);
if (isdigit(dname[strlen(dname) - 1]))
dev_set_name(pdev, "%sp%d", dname, partno);
@ -439,9 +381,9 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
pdev->type = &part_type;
pdev->parent = ddev;
err = blk_alloc_devt(p, &devt);
err = blk_alloc_devt(bdev, &devt);
if (err)
goto out_free_info;
goto out_bdput;
pdev->devt = devt;
/* delay uevent until 'holders' subdir is created */
@ -451,8 +393,8 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
goto out_put;
err = -ENOMEM;
p->holder_dir = kobject_create_and_add("holders", &pdev->kobj);
if (!p->holder_dir)
bdev->bd_holder_dir = kobject_create_and_add("holders", &pdev->kobj);
if (!bdev->bd_holder_dir)
goto out_del;
dev_set_uevent_suppress(pdev, 0);
@ -462,32 +404,20 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
goto out_del;
}
err = hd_ref_init(p);
if (err) {
if (flags & ADDPART_FLAG_WHOLEDISK)
goto out_remove_file;
goto out_del;
}
/* everything is up and running, commence */
rcu_assign_pointer(ptbl->part[partno], p);
bdev_add(bdev, devt);
rcu_assign_pointer(ptbl->part[partno], bdev);
/* suppress uevent if the disk suppresses it */
if (!dev_get_uevent_suppress(ddev))
kobject_uevent(&pdev->kobj, KOBJ_ADD);
return p;
return bdev;
out_free_info:
kfree(p->info);
out_free_stats:
free_percpu(p->dkstats);
out_free:
kfree(p);
out_bdput:
bdput(bdev);
return ERR_PTR(err);
out_remove_file:
device_remove_file(pdev, &dev_attr_whole_disk);
out_del:
kobject_put(p->holder_dir);
kobject_put(bdev->bd_holder_dir);
device_del(pdev);
out_put:
put_device(pdev);
@ -498,14 +428,14 @@ static bool partition_overlaps(struct gendisk *disk, sector_t start,
sector_t length, int skip_partno)
{
struct disk_part_iter piter;
struct hd_struct *part;
struct block_device *part;
bool overlap = false;
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
while ((part = disk_part_iter_next(&piter))) {
if (part->partno == skip_partno ||
start >= part->start_sect + part->nr_sects ||
start + length <= part->start_sect)
if (part->bd_partno == skip_partno ||
start >= part->bd_start_sect + bdev_nr_sectors(part) ||
start + length <= part->bd_start_sect)
continue;
overlap = true;
break;
@ -518,7 +448,7 @@ static bool partition_overlaps(struct gendisk *disk, sector_t start,
int bdev_add_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length)
{
struct hd_struct *part;
struct block_device *part;
mutex_lock(&bdev->bd_mutex);
if (partition_overlaps(bdev->bd_disk, start, length, -1)) {
@ -534,77 +464,59 @@ int bdev_add_partition(struct block_device *bdev, int partno,
int bdev_del_partition(struct block_device *bdev, int partno)
{
struct block_device *bdevp;
struct hd_struct *part = NULL;
struct block_device *part;
int ret;
bdevp = bdget_disk(bdev->bd_disk, partno);
if (!bdevp)
part = bdget_disk(bdev->bd_disk, partno);
if (!part)
return -ENXIO;
mutex_lock(&bdevp->bd_mutex);
mutex_lock(&part->bd_mutex);
mutex_lock_nested(&bdev->bd_mutex, 1);
ret = -ENXIO;
part = disk_get_part(bdev->bd_disk, partno);
if (!part)
goto out_unlock;
ret = -EBUSY;
if (bdevp->bd_openers)
if (part->bd_openers)
goto out_unlock;
sync_blockdev(bdevp);
invalidate_bdev(bdevp);
sync_blockdev(part);
invalidate_bdev(part);
delete_partition(part);
ret = 0;
out_unlock:
mutex_unlock(&bdev->bd_mutex);
mutex_unlock(&bdevp->bd_mutex);
bdput(bdevp);
if (part)
disk_put_part(part);
mutex_unlock(&part->bd_mutex);
bdput(part);
return ret;
}
int bdev_resize_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length)
{
struct block_device *bdevp;
struct hd_struct *part;
struct block_device *part;
int ret = 0;
part = disk_get_part(bdev->bd_disk, partno);
part = bdget_disk(bdev->bd_disk, partno);
if (!part)
return -ENXIO;
ret = -ENOMEM;
bdevp = bdget_part(part);
if (!bdevp)
goto out_put_part;
mutex_lock(&bdevp->bd_mutex);
mutex_lock(&part->bd_mutex);
mutex_lock_nested(&bdev->bd_mutex, 1);
ret = -EINVAL;
if (start != part->start_sect)
if (start != part->bd_start_sect)
goto out_unlock;
ret = -EBUSY;
if (partition_overlaps(bdev->bd_disk, start, length, partno))
goto out_unlock;
part_nr_sects_write(part, length);
bd_set_nr_sectors(bdevp, length);
bdev_set_nr_sectors(part, length);
ret = 0;
out_unlock:
mutex_unlock(&bdevp->bd_mutex);
mutex_unlock(&part->bd_mutex);
mutex_unlock(&bdev->bd_mutex);
bdput(bdevp);
out_put_part:
disk_put_part(part);
bdput(part);
return ret;
}
@ -627,7 +539,7 @@ static bool disk_unlock_native_capacity(struct gendisk *disk)
int blk_drop_partitions(struct block_device *bdev)
{
struct disk_part_iter piter;
struct hd_struct *part;
struct block_device *part;
if (bdev->bd_part_count)
return -EBUSY;
@ -652,7 +564,7 @@ static bool blk_add_partition(struct gendisk *disk, struct block_device *bdev,
{
sector_t size = state->parts[p].size;
sector_t from = state->parts[p].from;
struct hd_struct *part;
struct block_device *part;
if (!size)
return true;
@ -692,7 +604,7 @@ static bool blk_add_partition(struct gendisk *disk, struct block_device *bdev,
if (IS_BUILTIN(CONFIG_BLK_DEV_MD) &&
(state->parts[p].flags & ADDPART_FLAG_RAID))
md_autodetect_dev(part_to_dev(part)->devt);
md_autodetect_dev(part->bd_dev);
return true;
}

100
drivers/block/amiflop.c
View File

@ -201,7 +201,7 @@ struct amiga_floppy_struct {
int busy; /* true when drive is active */
int dirty; /* true when trackbuf is not on disk */
int status; /* current error code for unit */
struct gendisk *gendisk;
struct gendisk *gendisk[2];
struct blk_mq_tag_set tag_set;
};
@ -1669,6 +1669,11 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
return -EBUSY;
}
if (unit[drive].type->code == FD_NODRIVE) {
mutex_unlock(&amiflop_mutex);
return -ENXIO;
}
if (mode & (FMODE_READ|FMODE_WRITE)) {
bdev_check_media_change(bdev);
if (mode & FMODE_WRITE) {
@ -1695,7 +1700,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
unit[drive].dtype=&data_types[system];
unit[drive].blocks=unit[drive].type->heads*unit[drive].type->tracks*
data_types[system].sects*unit[drive].type->sect_mult;
set_capacity(unit[drive].gendisk, unit[drive].blocks);
set_capacity(unit[drive].gendisk[system], unit[drive].blocks);
printk(KERN_INFO "fd%d: accessing %s-disk with %s-layout\n",drive,
unit[drive].type->name, data_types[system].name);
@ -1772,36 +1777,68 @@ static const struct blk_mq_ops amiflop_mq_ops = {
.queue_rq = amiflop_queue_rq,
};
static struct gendisk *fd_alloc_disk(int drive)
static int fd_alloc_disk(int drive, int system)
{
struct gendisk *disk;
disk = alloc_disk(1);
if (!disk)
goto out;
disk->queue = blk_mq_init_sq_queue(&unit[drive].tag_set, &amiflop_mq_ops,
2, BLK_MQ_F_SHOULD_MERGE);
if (IS_ERR(disk->queue)) {
disk->queue = NULL;
disk->queue = blk_mq_init_queue(&unit[drive].tag_set);
if (IS_ERR(disk->queue))
goto out_put_disk;
}
unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL);
if (!unit[drive].trackbuf)
goto out_cleanup_queue;
disk->major = FLOPPY_MAJOR;
disk->first_minor = drive + system;
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
if (system)
sprintf(disk->disk_name, "fd%d_msdos", drive);
else
sprintf(disk->disk_name, "fd%d", drive);
disk->private_data = &unit[drive];
set_capacity(disk, 880 * 2);
return disk;
unit[drive].gendisk[system] = disk;
add_disk(disk);
return 0;
out_cleanup_queue:
blk_cleanup_queue(disk->queue);
disk->queue = NULL;
blk_mq_free_tag_set(&unit[drive].tag_set);
out_put_disk:
disk->queue = NULL;
put_disk(disk);
out:
return -ENOMEM;
}
static int fd_alloc_drive(int drive)
{
unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL);
if (!unit[drive].trackbuf)
goto out;
memset(&unit[drive].tag_set, 0, sizeof(unit[drive].tag_set));
unit[drive].tag_set.ops = &amiflop_mq_ops;
unit[drive].tag_set.nr_hw_queues = 1;
unit[drive].tag_set.nr_maps = 1;
unit[drive].tag_set.queue_depth = 2;
unit[drive].tag_set.numa_node = NUMA_NO_NODE;
unit[drive].tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
if (blk_mq_alloc_tag_set(&unit[drive].tag_set))
goto out_cleanup_trackbuf;
pr_cont(" fd%d", drive);
if (fd_alloc_disk(drive, 0) || fd_alloc_disk(drive, 1))
goto out_cleanup_tagset;
return 0;
out_cleanup_tagset:
blk_mq_free_tag_set(&unit[drive].tag_set);
out_cleanup_trackbuf:
kfree(unit[drive].trackbuf);
out:
unit[drive].type->code = FD_NODRIVE;
return NULL;
return -ENOMEM;
}
static int __init fd_probe_drives(void)
@ -1812,29 +1849,16 @@ static int __init fd_probe_drives(void)
drives=0;
nomem=0;
for(drive=0;drive<FD_MAX_UNITS;drive++) {
struct gendisk *disk;
fd_probe(drive);
if (unit[drive].type->code == FD_NODRIVE)
continue;
disk = fd_alloc_disk(drive);
if (!disk) {
if (fd_alloc_drive(drive) < 0) {
pr_cont(" no mem for fd%d", drive);
nomem = 1;
continue;
}
unit[drive].gendisk = disk;
drives++;
pr_cont(" fd%d",drive);
disk->major = FLOPPY_MAJOR;
disk->first_minor = drive;
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
sprintf(disk->disk_name, "fd%d", drive);
disk->private_data = &unit[drive];
set_capacity(disk, 880*2);
add_disk(disk);
}
if ((drives > 0) || (nomem == 0)) {
if (drives == 0)
@ -1846,15 +1870,6 @@ static int __init fd_probe_drives(void)
return -ENOMEM;
}
static struct kobject *floppy_find(dev_t dev, int *part, void *data)
{
int drive = *part & 3;
if (unit[drive].type->code == FD_NODRIVE)
return NULL;
*part = 0;
return get_disk_and_module(unit[drive].gendisk);
}
static int __init amiga_floppy_probe(struct platform_device *pdev)
{
int i, ret;
@ -1884,9 +1899,6 @@ static int __init amiga_floppy_probe(struct platform_device *pdev)
if (fd_probe_drives() < 1) /* No usable drives */
goto out_probe;
blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
floppy_find, NULL, NULL);
/* initialize variables */
timer_setup(&motor_on_timer, motor_on_callback, 0);
motor_on_timer.expires = 0;

15
drivers/block/aoe/aoecmd.c
View File

@ -890,19 +890,13 @@ void
aoecmd_sleepwork(struct work_struct *work)
{
struct aoedev *d = container_of(work, struct aoedev, work);
struct block_device *bd;
u64 ssize;
if (d->flags & DEVFL_GDALLOC)
aoeblk_gdalloc(d);
if (d->flags & DEVFL_NEWSIZE) {
ssize = get_capacity(d->gd);
bd = bdget_disk(d->gd, 0);
if (bd) {
bd_set_nr_sectors(bd, ssize);
bdput(bd);
}
set_capacity_and_notify(d->gd, d->ssize);
spin_lock_irq(&d->lock);
d->flags |= DEVFL_UP;
d->flags &= ~DEVFL_NEWSIZE;
@ -971,10 +965,9 @@ ataid_complete(struct aoedev *d, struct aoetgt *t, unsigned char *id)
d->geo.start = 0;
if (d->flags & (DEVFL_GDALLOC|DEVFL_NEWSIZE))
return;
if (d->gd != NULL) {
set_capacity(d->gd, ssize);
if (d->gd != NULL)
d->flags |= DEVFL_NEWSIZE;
} else
else
d->flags |= DEVFL_GDALLOC;
schedule_work(&d->work);
}

135
drivers/block/ataflop.c
View File

@ -297,7 +297,7 @@ static struct atari_floppy_struct {
unsigned int wpstat; /* current state of WP signal (for
disk change detection) */
int flags; /* flags */
struct gendisk *disk;
struct gendisk *disk[NUM_DISK_MINORS];
int ref;
int type;
struct blk_mq_tag_set tag_set;
@ -723,12 +723,16 @@ static void fd_error( void )
static int do_format(int drive, int type, struct atari_format_descr *desc)
{
struct request_queue *q = unit[drive].disk->queue;
struct request_queue *q;
unsigned char *p;
int sect, nsect;
unsigned long flags;
int ret;
if (type)
type--;
q = unit[drive].disk[type]->queue;
blk_mq_freeze_queue(q);
blk_mq_quiesce_queue(q);
@ -738,7 +742,7 @@ static int do_format(int drive, int type, struct atari_format_descr *desc)
local_irq_restore(flags);
if (type) {
if (--type >= NUM_DISK_MINORS ||
if (type >= NUM_DISK_MINORS ||
minor2disktype[type].drive_types > DriveType) {
ret = -EINVAL;
goto out;
@ -1154,7 +1158,7 @@ static void fd_rwsec_done1(int status)
if (SUDT[-1].blocks > ReqBlock) {
/* try another disk type */
SUDT--;
set_capacity(unit[SelectedDrive].disk,
set_capacity(unit[SelectedDrive].disk[0],
SUDT->blocks);
} else
Probing = 0;
@ -1169,7 +1173,7 @@ static void fd_rwsec_done1(int status)
/* record not found, but not probing. Maybe stretch wrong ? Restart probing */
if (SUD.autoprobe) {
SUDT = atari_disk_type + StartDiskType[DriveType];
set_capacity(unit[SelectedDrive].disk,
set_capacity(unit[SelectedDrive].disk[0],
SUDT->blocks);
Probing = 1;
}
@ -1515,7 +1519,7 @@ static blk_status_t ataflop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (!UDT) {
Probing = 1;
UDT = atari_disk_type + StartDiskType[DriveType];
set_capacity(floppy->disk, UDT->blocks);
set_capacity(bd->rq->rq_disk, UDT->blocks);
UD.autoprobe = 1;
}
}
@ -1533,7 +1537,7 @@ static blk_status_t ataflop_queue_rq(struct blk_mq_hw_ctx *hctx,
}
type = minor2disktype[type].index;
UDT = &atari_disk_type[type];
set_capacity(floppy->disk, UDT->blocks);
set_capacity(bd->rq->rq_disk, UDT->blocks);
UD.autoprobe = 0;
}
@ -1658,7 +1662,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
printk (KERN_INFO "floppy%d: setting %s %p!\n",
drive, dtp->name, dtp);
UDT = dtp;
set_capacity(floppy->disk, UDT->blocks);
set_capacity(disk, UDT->blocks);
if (cmd == FDDEFPRM) {
/* save settings as permanent default type */
@ -1702,7 +1706,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
return -EINVAL;
UDT = dtp;
set_capacity(floppy->disk, UDT->blocks);
set_capacity(disk, UDT->blocks);
return 0;
case FDMSGON:
@ -1725,7 +1729,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
UDT = NULL;
/* MSch: invalidate default_params */
default_params[drive].blocks = 0;
set_capacity(floppy->disk, MAX_DISK_SIZE * 2);
set_capacity(disk, MAX_DISK_SIZE * 2);
fallthrough;
case FDFMTEND:
case FDFLUSH:
@ -1962,14 +1966,50 @@ static const struct blk_mq_ops ataflop_mq_ops = {
.commit_rqs = ataflop_commit_rqs,
};
static struct kobject *floppy_find(dev_t dev, int *part, void *data)
static int ataflop_alloc_disk(unsigned int drive, unsigned int type)
{
int drive = *part & 3;
int type = *part >> 2;
struct gendisk *disk;
int ret;
disk = alloc_disk(1);
if (!disk)
return -ENOMEM;
disk->queue = blk_mq_init_queue(&unit[drive].tag_set);
if (IS_ERR(disk->queue)) {
ret = PTR_ERR(disk->queue);
disk->queue = NULL;
put_disk(disk);
return ret;
}
disk->major = FLOPPY_MAJOR;
disk->first_minor = drive + (type << 2);
sprintf(disk->disk_name, "fd%d", drive);
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = &unit[drive];
set_capacity(disk, MAX_DISK_SIZE * 2);
unit[drive].disk[type] = disk;
return 0;
}
static DEFINE_MUTEX(ataflop_probe_lock);
static void ataflop_probe(dev_t dev)
{
int drive = MINOR(dev) & 3;
int type = MINOR(dev) >> 2;
if (drive >= FD_MAX_UNITS || type > NUM_DISK_MINORS)
return NULL;
*part = 0;
return get_disk_and_module(unit[drive].disk);
return;
mutex_lock(&ataflop_probe_lock);
if (!unit[drive].disk[type]) {
if (ataflop_alloc_disk(drive, type) == 0)
add_disk(unit[drive].disk[type]);
}
mutex_unlock(&ataflop_probe_lock);
}
static int __init atari_floppy_init (void)
@ -1981,23 +2021,26 @@ static int __init atari_floppy_init (void)
/* Amiga, Mac, ... don't have Atari-compatible floppy :-) */
return -ENODEV;
if (register_blkdev(FLOPPY_MAJOR,"fd"))
return -EBUSY;
mutex_lock(&ataflop_probe_lock);
ret = __register_blkdev(FLOPPY_MAJOR, "fd", ataflop_probe);
if (ret)
goto out_unlock;
for (i = 0; i < FD_MAX_UNITS; i++) {
unit[i].disk = alloc_disk(1);
if (!unit[i].disk) {
ret = -ENOMEM;
memset(&unit[i].tag_set, 0, sizeof(unit[i].tag_set));
unit[i].tag_set.ops = &ataflop_mq_ops;
unit[i].tag_set.nr_hw_queues = 1;
unit[i].tag_set.nr_maps = 1;
unit[i].tag_set.queue_depth = 2;
unit[i].tag_set.numa_node = NUMA_NO_NODE;
unit[i].tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ret = blk_mq_alloc_tag_set(&unit[i].tag_set);
if (ret)
goto err;
}
unit[i].disk->queue = blk_mq_init_sq_queue(&unit[i].tag_set,
&ataflop_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
if (IS_ERR(unit[i].disk->queue)) {
put_disk(unit[i].disk);
ret = PTR_ERR(unit[i].disk->queue);
unit[i].disk->queue = NULL;
ret = ataflop_alloc_disk(i, 0);
if (ret) {
blk_mq_free_tag_set(&unit[i].tag_set);
goto err;
}
}
@ -2027,19 +2070,9 @@ static int __init atari_floppy_init (void)
for (i = 0; i < FD_MAX_UNITS; i++) {
unit[i].track = -1;
unit[i].flags = 0;
unit[i].disk->major = FLOPPY_MAJOR;
unit[i].disk->first_minor = i;
sprintf(unit[i].disk->disk_name, "fd%d", i);
unit[i].disk->fops = &floppy_fops;
unit[i].disk->events = DISK_EVENT_MEDIA_CHANGE;
unit[i].disk->private_data = &unit[i];
set_capacity(unit[i].disk, MAX_DISK_SIZE * 2);
add_disk(unit[i].disk);
add_disk(unit[i].disk[0]);
}
blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
floppy_find, NULL, NULL);
printk(KERN_INFO "Atari floppy driver: max. %cD, %strack buffering\n",
DriveType == 0 ? 'D' : DriveType == 1 ? 'H' : 'E',
UseTrackbuffer ? "" : "no ");
@ -2049,14 +2082,14 @@ static int __init atari_floppy_init (void)
err:
while (--i >= 0) {
struct gendisk *disk = unit[i].disk;
blk_cleanup_queue(disk->queue);
blk_cleanup_queue(unit[i].disk[0]->queue);
put_disk(unit[i].disk[0]);
blk_mq_free_tag_set(&unit[i].tag_set);
put_disk(unit[i].disk);
}
unregister_blkdev(FLOPPY_MAJOR, "fd");
out_unlock:
mutex_unlock(&ataflop_probe_lock);
return ret;
}
@ -2101,13 +2134,17 @@ __setup("floppy=", atari_floppy_setup);
static void __exit atari_floppy_exit(void)
{
int i;
blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
int i, type;
for (i = 0; i < FD_MAX_UNITS; i++) {
del_gendisk(unit[i].disk);
blk_cleanup_queue(unit[i].disk->queue);
for (type = 0; type < NUM_DISK_MINORS; type++) {
if (!unit[i].disk[type])
continue;
del_gendisk(unit[i].disk[type]);
blk_cleanup_queue(unit[i].disk[type]->queue);
put_disk(unit[i].disk[type]);
}
blk_mq_free_tag_set(&unit[i].tag_set);
put_disk(unit[i].disk);
}
unregister_blkdev(FLOPPY_MAJOR, "fd");

39
drivers/block/brd.c
View File

@ -426,14 +426,15 @@ static void brd_free(struct brd_device *brd)
kfree(brd);
}
static struct brd_device *brd_init_one(int i, bool *new)
static void brd_probe(dev_t dev)
{
struct brd_device *brd;
int i = MINOR(dev) / max_part;
*new = false;
mutex_lock(&brd_devices_mutex);
list_for_each_entry(brd, &brd_devices, brd_list) {
if (brd->brd_number == i)
goto out;
goto out_unlock;
}
brd = brd_alloc(i);
@ -442,9 +443,9 @@ static struct brd_device *brd_init_one(int i, bool *new)
add_disk(brd->brd_disk);
list_add_tail(&brd->brd_list, &brd_devices);
}
*new = true;
out:
return brd;
out_unlock:
mutex_unlock(&brd_devices_mutex);
}
static void brd_del_one(struct brd_device *brd)
@ -454,23 +455,6 @@ static void brd_del_one(struct brd_device *brd)
brd_free(brd);
}
static struct kobject *brd_probe(dev_t dev, int *part, void *data)
{
struct brd_device *brd;
struct kobject *kobj;
bool new;
mutex_lock(&brd_devices_mutex);
brd = brd_init_one(MINOR(dev) / max_part, &new);
kobj = brd ? get_disk_and_module(brd->brd_disk) : NULL;
mutex_unlock(&brd_devices_mutex);
if (new)
*part = 0;
return kobj;
}
static inline void brd_check_and_reset_par(void)
{
if (unlikely(!max_part))
@ -510,11 +494,12 @@ static int __init brd_init(void)
* dynamically.
*/
if (register_blkdev(RAMDISK_MAJOR, "ramdisk"))
if (__register_blkdev(RAMDISK_MAJOR, "ramdisk", brd_probe))
return -EIO;
brd_check_and_reset_par();
mutex_lock(&brd_devices_mutex);
for (i = 0; i < rd_nr; i++) {
brd = brd_alloc(i);
if (!brd)
@ -532,9 +517,7 @@ static int __init brd_init(void)
brd->brd_disk->queue = brd->brd_queue;
add_disk(brd->brd_disk);
}
blk_register_region(MKDEV(RAMDISK_MAJOR, 0), 1UL << MINORBITS,
THIS_MODULE, brd_probe, NULL, NULL);
mutex_unlock(&brd_devices_mutex);
pr_info("brd: module loaded\n");
return 0;
@ -544,6 +527,7 @@ out_free:
list_del(&brd->brd_list);
brd_free(brd);
}
mutex_unlock(&brd_devices_mutex);
unregister_blkdev(RAMDISK_MAJOR, "ramdisk");
pr_info("brd: module NOT loaded !!!\n");
@ -557,7 +541,6 @@ static void __exit brd_exit(void)
list_for_each_entry_safe(brd, next, &brd_devices, brd_list)
brd_del_one(brd);
blk_unregister_region(MKDEV(RAMDISK_MAJOR, 0), 1UL << MINORBITS);
unregister_blkdev(RAMDISK_MAJOR, "ramdisk");
pr_info("brd: module unloaded\n");

6
drivers/block/drbd/drbd_main.c
View File

@ -2036,8 +2036,7 @@ void drbd_set_my_capacity(struct drbd_device *device, sector_t size)
{
char ppb[10];
set_capacity(device->vdisk, size);
revalidate_disk_size(device->vdisk, false);
set_capacity_and_notify(device->vdisk, size);
drbd_info(device, "size = %s (%llu KB)\n",
ppsize(ppb, size>>1), (unsigned long long)size>>1);
@ -2068,8 +2067,7 @@ void drbd_device_cleanup(struct drbd_device *device)
}
D_ASSERT(device, first_peer_device(device)->connection->net_conf == NULL);
set_capacity(device->vdisk, 0);
revalidate_disk_size(device->vdisk, false);
set_capacity_and_notify(device->vdisk, 0);
if (device->bitmap) {
/* maybe never allocated. */
drbd_bm_resize(device, 0, 1);

2
drivers/block/drbd/drbd_receiver.c
View File

@ -2802,7 +2802,7 @@ bool drbd_rs_c_min_rate_throttle(struct drbd_device *device)
if (c_min_rate == 0)
return false;
curr_events = (int)part_stat_read_accum(&disk->part0, sectors) -
curr_events = (int)part_stat_read_accum(disk->part0, sectors) -
atomic_read(&device->rs_sect_ev);
if (atomic_read(&device->ap_actlog_cnt)

3
drivers/block/drbd/drbd_worker.c
View File

@ -1678,7 +1678,8 @@ void drbd_rs_controller_reset(struct drbd_device *device)
atomic_set(&device->rs_sect_in, 0);
atomic_set(&device->rs_sect_ev, 0);
device->rs_in_flight = 0;
device->rs_last_events = (int)part_stat_read_accum(&disk->part0, sectors);
device->rs_last_events =
(int)part_stat_read_accum(disk->part0, sectors);
/* Updating the RCU protected object in place is necessary since
this function gets called from atomic context.

154
drivers/block/floppy.c
View File

@ -402,7 +402,6 @@ static struct floppy_drive_params drive_params[N_DRIVE];
static struct floppy_drive_struct drive_state[N_DRIVE];
static struct floppy_write_errors write_errors[N_DRIVE];
static struct timer_list motor_off_timer[N_DRIVE];
static struct gendisk *disks[N_DRIVE];
static struct blk_mq_tag_set tag_sets[N_DRIVE];
static struct block_device *opened_bdev[N_DRIVE];
static DEFINE_MUTEX(open_lock);
@ -477,6 +476,8 @@ static struct floppy_struct floppy_type[32] = {
{ 3200,20,2,80,0,0x1C,0x00,0xCF,0x2C,"H1600" }, /* 31 1.6MB 3.5" */
};
static struct gendisk *disks[N_DRIVE][ARRAY_SIZE(floppy_type)];
#define SECTSIZE (_FD_SECTSIZE(*floppy))
/* Auto-detection: Disk type used until the next media change occurs. */
@ -4111,7 +4112,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
new_dev = MINOR(bdev->bd_dev);
drive_state[drive].fd_device = new_dev;
set_capacity(disks[drive], floppy_sizes[new_dev]);
set_capacity(disks[drive][ITYPE(new_dev)], floppy_sizes[new_dev]);
if (old_dev != -1 && old_dev != new_dev) {
if (buffer_drive == drive)
buffer_track = -1;
@ -4579,15 +4580,58 @@ static bool floppy_available(int drive)
return true;
}
static struct kobject *floppy_find(dev_t dev, int *part, void *data)
static int floppy_alloc_disk(unsigned int drive, unsigned int type)
{
int drive = (*part & 3) | ((*part & 0x80) >> 5);
if (drive >= N_DRIVE || !floppy_available(drive))
return NULL;
if (((*part >> 2) & 0x1f) >= ARRAY_SIZE(floppy_type))
return NULL;
*part = 0;
return get_disk_and_module(disks[drive]);
struct gendisk *disk;
int err;
disk = alloc_disk(1);
if (!disk)
return -ENOMEM;
disk->queue = blk_mq_init_queue(&tag_sets[drive]);
if (IS_ERR(disk->queue)) {
err = PTR_ERR(disk->queue);
disk->queue = NULL;
put_disk(disk);
return err;
}
blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
blk_queue_max_hw_sectors(disk->queue, 64);
disk->major = FLOPPY_MAJOR;
disk->first_minor = TOMINOR(drive) | (type << 2);
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
if (type)
sprintf(disk->disk_name, "fd%d_type%d", drive, type);
else
sprintf(disk->disk_name, "fd%d", drive);
/* to be cleaned up... */
disk->private_data = (void *)(long)drive;
disk->flags |= GENHD_FL_REMOVABLE;
disks[drive][type] = disk;
return 0;
}
static DEFINE_MUTEX(floppy_probe_lock);
static void floppy_probe(dev_t dev)
{
unsigned int drive = (MINOR(dev) & 3) | ((MINOR(dev) & 0x80) >> 5);
unsigned int type = (MINOR(dev) >> 2) & 0x1f;
if (drive >= N_DRIVE || !floppy_available(drive) ||
type >= ARRAY_SIZE(floppy_type))
return;
mutex_lock(&floppy_probe_lock);
if (!disks[drive][type]) {
if (floppy_alloc_disk(drive, type) == 0)
add_disk(disks[drive][type]);
}
mutex_unlock(&floppy_probe_lock);
}
static int __init do_floppy_init(void)
@ -4609,33 +4653,25 @@ static int __init do_floppy_init(void)
return -ENOMEM;
for (drive = 0; drive < N_DRIVE; drive++) {
disks[drive] = alloc_disk(1);
if (!disks[drive]) {
err = -ENOMEM;
memset(&tag_sets[drive], 0, sizeof(tag_sets[drive]));
tag_sets[drive].ops = &floppy_mq_ops;
tag_sets[drive].nr_hw_queues = 1;
tag_sets[drive].nr_maps = 1;
tag_sets[drive].queue_depth = 2;
tag_sets[drive].numa_node = NUMA_NO_NODE;
tag_sets[drive].flags = BLK_MQ_F_SHOULD_MERGE;
err = blk_mq_alloc_tag_set(&tag_sets[drive]);
if (err)
goto out_put_disk;
}
disks[drive]->queue = blk_mq_init_sq_queue(&tag_sets[drive],
&floppy_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
if (IS_ERR(disks[drive]->queue)) {
err = PTR_ERR(disks[drive]->queue);
disks[drive]->queue = NULL;
err = floppy_alloc_disk(drive, 0);
if (err)
goto out_put_disk;
}
blk_queue_bounce_limit(disks[drive]->queue, BLK_BOUNCE_HIGH);
blk_queue_max_hw_sectors(disks[drive]->queue, 64);
disks[drive]->major = FLOPPY_MAJOR;
disks[drive]->first_minor = TOMINOR(drive);
disks[drive]->fops = &floppy_fops;
disks[drive]->events = DISK_EVENT_MEDIA_CHANGE;
sprintf(disks[drive]->disk_name, "fd%d", drive);
timer_setup(&motor_off_timer[drive], motor_off_callback, 0);
}
err = register_blkdev(FLOPPY_MAJOR, "fd");
err = __register_blkdev(FLOPPY_MAJOR, "fd", floppy_probe);
if (err)
goto out_put_disk;
@ -4643,9 +4679,6 @@ static int __init do_floppy_init(void)
if (err)
goto out_unreg_blkdev;
blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
floppy_find, NULL, NULL);
for (i = 0; i < 256; i++)
if (ITYPE(i))
floppy_sizes[i] = floppy_type[ITYPE(i)].size;
@ -4673,7 +4706,7 @@ static int __init do_floppy_init(void)
if (fdc_state[0].address == -1) {
cancel_delayed_work(&fd_timeout);
err = -ENODEV;
goto out_unreg_region;
goto out_unreg_driver;
}
#if N_FDC > 1
fdc_state[1].address = FDC2;
@ -4684,7 +4717,7 @@ static int __init do_floppy_init(void)
if (err) {
cancel_delayed_work(&fd_timeout);
err = -EBUSY;
goto out_unreg_region;
goto out_unreg_driver;
}
/* initialise drive state */
@ -4761,10 +4794,8 @@ static int __init do_floppy_init(void)
if (err)
goto out_remove_drives;
/* to be cleaned up... */
disks[drive]->private_data = (void *)(long)drive;
disks[drive]->flags |= GENHD_FL_REMOVABLE;
device_add_disk(&floppy_device[drive].dev, disks[drive], NULL);
device_add_disk(&floppy_device[drive].dev, disks[drive][0],
NULL);
}
return 0;
@ -4772,30 +4803,27 @@ static int __init do_floppy_init(void)
out_remove_drives:
while (drive--) {
if (floppy_available(drive)) {
del_gendisk(disks[drive]);
del_gendisk(disks[drive][0]);
platform_device_unregister(&floppy_device[drive]);
}
}
out_release_dma:
if (atomic_read(&usage_count))
floppy_release_irq_and_dma();
out_unreg_region:
blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
out_unreg_driver:
platform_driver_unregister(&floppy_driver);
out_unreg_blkdev:
unregister_blkdev(FLOPPY_MAJOR, "fd");
out_put_disk:
destroy_workqueue(floppy_wq);
for (drive = 0; drive < N_DRIVE; drive++) {
if (!disks[drive])
if (!disks[drive][0])
break;
if (disks[drive]->queue) {
del_timer_sync(&motor_off_timer[drive]);
blk_cleanup_queue(disks[drive]->queue);
disks[drive]->queue = NULL;
blk_mq_free_tag_set(&tag_sets[drive]);
}
put_disk(disks[drive]);
del_timer_sync(&motor_off_timer[drive]);
blk_cleanup_queue(disks[drive][0]->queue);
disks[drive][0]->queue = NULL;
blk_mq_free_tag_set(&tag_sets[drive]);
put_disk(disks[drive][0]);
}
return err;
}
@ -5006,9 +5034,8 @@ module_init(floppy_module_init);
static void __exit floppy_module_exit(void)
{
int drive;
int drive, i;
blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
unregister_blkdev(FLOPPY_MAJOR, "fd");
platform_driver_unregister(&floppy_driver);
@ -5018,10 +5045,16 @@ static void __exit floppy_module_exit(void)
del_timer_sync(&motor_off_timer[drive]);
if (floppy_available(drive)) {
del_gendisk(disks[drive]);
for (i = 0; i < ARRAY_SIZE(floppy_type); i++) {
if (disks[drive][i])
del_gendisk(disks[drive][i]);
}
platform_device_unregister(&floppy_device[drive]);
}
blk_cleanup_queue(disks[drive]->queue);
for (i = 0; i < ARRAY_SIZE(floppy_type); i++) {
if (disks[drive][i])
blk_cleanup_queue(disks[drive][i]->queue);
}
blk_mq_free_tag_set(&tag_sets[drive]);
/*
@ -5029,10 +5062,17 @@ static void __exit floppy_module_exit(void)
* queue reference in put_disk().
*/
if (!(allowed_drive_mask & (1 << drive)) ||
fdc_state[FDC(drive)].version == FDC_NONE)
disks[drive]->queue = NULL;
fdc_state[FDC(drive)].version == FDC_NONE) {
for (i = 0; i < ARRAY_SIZE(floppy_type); i++) {
if (disks[drive][i])
disks[drive][i]->queue = NULL;
}
}
put_disk(disks[drive]);
for (i = 0; i < ARRAY_SIZE(floppy_type); i++) {
if (disks[drive][i])
put_disk(disks[drive][i]);
}
}
cancel_delayed_work_sync(&fd_timeout);

64
drivers/block/loop.c
View File

@ -251,12 +251,8 @@ loop_validate_block_size(unsigned short bsize)
*/
static void loop_set_size(struct loop_device *lo, loff_t size)
{
struct block_device *bdev = lo->lo_device;
bd_set_nr_sectors(bdev, size);
if (!set_capacity_revalidate_and_notify(lo->lo_disk, size, false))
kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
if (!set_capacity_and_notify(lo->lo_disk, size))
kobject_uevent(&disk_to_dev(lo->lo_disk)->kobj, KOBJ_CHANGE);
}
static inline int
@ -679,10 +675,10 @@ static int loop_validate_file(struct file *file, struct block_device *bdev)
while (is_loop_device(f)) {
struct loop_device *l;
if (f->f_mapping->host->i_bdev == bdev)
if (f->f_mapping->host->i_rdev == bdev->bd_dev)
return -EBADF;
l = f->f_mapping->host->i_bdev->bd_disk->private_data;
l = I_BDEV(f->f_mapping->host)->bd_disk->private_data;
if (l->lo_state != Lo_bound) {
return -EINVAL;
}
@ -889,9 +885,7 @@ static void loop_config_discard(struct loop_device *lo)
* file-backed loop devices: discarded regions read back as zero.
*/
if (S_ISBLK(inode->i_mode) && !lo->lo_encrypt_key_size) {
struct request_queue *backingq;
backingq = bdev_get_queue(inode->i_bdev);
struct request_queue *backingq = bdev_get_queue(I_BDEV(inode));
max_discard_sectors = backingq->limits.max_write_zeroes_sectors;
granularity = backingq->limits.discard_granularity ?:
@ -1075,7 +1069,6 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
struct file *file;
struct inode *inode;
struct address_space *mapping;
struct block_device *claimed_bdev = NULL;
int error;
loff_t size;
bool partscan;
@ -1094,8 +1087,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
* here to avoid changing device under exclusive owner.
*/
if (!(mode & FMODE_EXCL)) {
claimed_bdev = bdev->bd_contains;
error = bd_prepare_to_claim(bdev, claimed_bdev, loop_configure);
error = bd_prepare_to_claim(bdev, loop_configure);
if (error)
goto out_putf;
}
@ -1138,7 +1130,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
if (error)
goto out_unlock;
set_device_ro(bdev, (lo->lo_flags & LO_FLAGS_READ_ONLY) != 0);
set_disk_ro(lo->lo_disk, (lo->lo_flags & LO_FLAGS_READ_ONLY) != 0);
lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO;
lo->lo_device = bdev;
@ -1168,9 +1160,6 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
size = get_loop_size(lo, file);
loop_set_size(lo, size);
set_blocksize(bdev, S_ISBLK(inode->i_mode) ?
block_size(inode->i_bdev) : PAGE_SIZE);
lo->lo_state = Lo_bound;
if (part_shift)
lo->lo_flags |= LO_FLAGS_PARTSCAN;
@ -1185,15 +1174,15 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
mutex_unlock(&loop_ctl_mutex);
if (partscan)
loop_reread_partitions(lo, bdev);
if (claimed_bdev)
bd_abort_claiming(bdev, claimed_bdev, loop_configure);
if (!(mode & FMODE_EXCL))
bd_abort_claiming(bdev, loop_configure);
return 0;
out_unlock:
mutex_unlock(&loop_ctl_mutex);
out_bdev:
if (claimed_bdev)
bd_abort_claiming(bdev, claimed_bdev, loop_configure);
if (!(mode & FMODE_EXCL))
bd_abort_claiming(bdev, loop_configure);
out_putf:
fput(file);
out:
@ -1252,7 +1241,6 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
set_capacity(lo->lo_disk, 0);
loop_sysfs_exit(lo);
if (bdev) {
bd_set_nr_sectors(bdev, 0);
/* let user-space know about this change */
kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
}
@ -2235,24 +2223,18 @@ out:
return ret;
}
static struct kobject *loop_probe(dev_t dev, int *part, void *data)
static void loop_probe(dev_t dev)
{
int idx = MINOR(dev) >> part_shift;
struct loop_device *lo;
struct kobject *kobj;
int err;
if (max_loop && idx >= max_loop)
return;
mutex_lock(&loop_ctl_mutex);
err = loop_lookup(&lo, MINOR(dev) >> part_shift);
if (err < 0)
err = loop_add(&lo, MINOR(dev) >> part_shift);
if (err < 0)
kobj = NULL;
else
kobj = get_disk_and_module(lo->lo_disk);
if (loop_lookup(&lo, idx) < 0)
loop_add(&lo, idx);
mutex_unlock(&loop_ctl_mutex);
*part = 0;
return kobj;
}
static long loop_control_ioctl(struct file *file, unsigned int cmd,
@ -2372,14 +2354,11 @@ static int __init loop_init(void)
goto err_out;
if (register_blkdev(LOOP_MAJOR, "loop")) {
if (__register_blkdev(LOOP_MAJOR, "loop", loop_probe)) {
err = -EIO;
goto misc_out;
}
blk_register_region(MKDEV(LOOP_MAJOR, 0), range,
THIS_MODULE, loop_probe, NULL, NULL);
/* pre-create number of devices given by config or max_loop */
mutex_lock(&loop_ctl_mutex);
for (i = 0; i < nr; i++)
@ -2405,16 +2384,11 @@ static int loop_exit_cb(int id, void *ptr, void *data)
static void __exit loop_exit(void)
{
unsigned long range;
range = max_loop ? max_loop << part_shift : 1UL << MINORBITS;
mutex_lock(&loop_ctl_mutex);
idr_for_each(&loop_index_idr, &loop_exit_cb, NULL);
idr_destroy(&loop_index_idr);
blk_unregister_region(MKDEV(LOOP_MAJOR, 0), range);
unregister_blkdev(LOOP_MAJOR, "loop");
misc_deregister(&loop_misc);

15
drivers/block/mtip32xx/mtip32xx.c
View File

@ -3687,7 +3687,6 @@ skip_create_disk:
/* Enable the block device and add it to /dev */
device_add_disk(&dd->pdev->dev, dd->disk, NULL);
dd->bdev = bdget_disk(dd->disk, 0);
/*
* Now that the disk is active, initialize any sysfs attributes
* managed by the protocol layer.
@ -3721,9 +3720,6 @@ start_service_thread:
return rv;
kthread_run_error:
bdput(dd->bdev);
dd->bdev = NULL;
/* Delete our gendisk. This also removes the device from /dev */
del_gendisk(dd->disk);
@ -3804,14 +3800,6 @@ static int mtip_block_remove(struct driver_data *dd)
blk_mq_tagset_busy_iter(&dd->tags, mtip_no_dev_cleanup, dd);
blk_mq_unquiesce_queue(dd->queue);
/*
* Delete our gendisk structure. This also removes the device
* from /dev
*/
if (dd->bdev) {
bdput(dd->bdev);
dd->bdev = NULL;
}
if (dd->disk) {
if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag))
del_gendisk(dd->disk);
@ -4206,9 +4194,6 @@ static void mtip_pci_remove(struct pci_dev *pdev)
} while (atomic_read(&dd->irq_workers_active) != 0 &&
time_before(jiffies, to));
if (!dd->sr)
fsync_bdev(dd->bdev);
if (atomic_read(&dd->irq_workers_active) != 0) {
dev_warn(&dd->pdev->dev,
"Completion workers still active!\n");

2
drivers/block/mtip32xx/mtip32xx.h
View File

@ -463,8 +463,6 @@ struct driver_data {
int isr_binding;
struct block_device *bdev;
struct list_head online_list; /* linkage for online list */
struct list_head remove_list; /* linkage for removing list */

94
drivers/block/nbd.c
View File

@ -296,40 +296,32 @@ static void nbd_size_clear(struct nbd_device *nbd)
}
}
static void nbd_size_update(struct nbd_device *nbd, bool start)
static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
loff_t blksize)
{
struct nbd_config *config = nbd->config;
struct block_device *bdev = bdget_disk(nbd->disk, 0);
sector_t nr_sectors = config->bytesize >> 9;
if (!blksize)
blksize = NBD_DEF_BLKSIZE;
if (blksize < 512 || blksize > PAGE_SIZE || !is_power_of_2(blksize))
return -EINVAL;
if (config->flags & NBD_FLAG_SEND_TRIM) {
nbd->disk->queue->limits.discard_granularity = config->blksize;
nbd->disk->queue->limits.discard_alignment = config->blksize;
nbd->config->bytesize = bytesize;
nbd->config->blksize = blksize;
if (!nbd->task_recv)
return 0;
if (nbd->config->flags & NBD_FLAG_SEND_TRIM) {
nbd->disk->queue->limits.discard_granularity = blksize;
nbd->disk->queue->limits.discard_alignment = blksize;
blk_queue_max_discard_sectors(nbd->disk->queue, UINT_MAX);
}
blk_queue_logical_block_size(nbd->disk->queue, config->blksize);
blk_queue_physical_block_size(nbd->disk->queue, config->blksize);
set_capacity(nbd->disk, nr_sectors);
if (bdev) {
if (bdev->bd_disk) {
bd_set_nr_sectors(bdev, nr_sectors);
if (start)
set_blocksize(bdev, config->blksize);
} else
set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);
bdput(bdev);
}
kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
}
blk_queue_logical_block_size(nbd->disk->queue, blksize);
blk_queue_physical_block_size(nbd->disk->queue, blksize);
static void nbd_size_set(struct nbd_device *nbd, loff_t blocksize,
loff_t nr_blocks)
{
struct nbd_config *config = nbd->config;
config->blksize = blocksize;
config->bytesize = blocksize * nr_blocks;
if (nbd->task_recv != NULL)
nbd_size_update(nbd, false);
set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);
if (!set_capacity_and_notify(nbd->disk, bytesize >> 9))
kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
return 0;
}
static void nbd_complete_rq(struct request *req)
@ -1140,7 +1132,7 @@ static void nbd_bdev_reset(struct block_device *bdev)
{
if (bdev->bd_openers > 1)
return;
bd_set_nr_sectors(bdev, 0);
set_capacity(bdev->bd_disk, 0);
}
static void nbd_parse_flags(struct nbd_device *nbd)
@ -1309,8 +1301,7 @@ static int nbd_start_device(struct nbd_device *nbd)
args->index = i;
queue_work(nbd->recv_workq, &args->work);
}
nbd_size_update(nbd, true);
return error;
return nbd_set_size(nbd, config->bytesize, config->blksize);
}
static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *bdev)
@ -1352,14 +1343,6 @@ static void nbd_clear_sock_ioctl(struct nbd_device *nbd,
nbd_config_put(nbd);
}
static bool nbd_is_valid_blksize(unsigned long blksize)
{
if (!blksize || !is_power_of_2(blksize) || blksize < 512 ||
blksize > PAGE_SIZE)
return false;
return true;
}
static void nbd_set_cmd_timeout(struct nbd_device *nbd, u64 timeout)
{
nbd->tag_set.timeout = timeout * HZ;
@ -1384,20 +1367,12 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
case NBD_SET_SOCK:
return nbd_add_socket(nbd, arg, false);
case NBD_SET_BLKSIZE:
if (!arg)
arg = NBD_DEF_BLKSIZE;
if (!nbd_is_valid_blksize(arg))
return -EINVAL;
nbd_size_set(nbd, arg,
div_s64(config->bytesize, arg));
return 0;
return nbd_set_size(nbd, config->bytesize, arg);
case NBD_SET_SIZE:
nbd_size_set(nbd, config->blksize,
div_s64(arg, config->blksize));
return 0;
return nbd_set_size(nbd, arg, config->blksize);
case NBD_SET_SIZE_BLOCKS:
nbd_size_set(nbd, config->blksize, arg);
return 0;
return nbd_set_size(nbd, arg * config->blksize,
config->blksize);
case NBD_SET_TIMEOUT:
nbd_set_cmd_timeout(nbd, arg);
return 0;
@ -1513,12 +1488,10 @@ out:
static void nbd_release(struct gendisk *disk, fmode_t mode)
{
struct nbd_device *nbd = disk->private_data;
struct block_device *bdev = bdget_disk(disk, 0);
if (test_bit(NBD_RT_DISCONNECT_ON_CLOSE, &nbd->config->runtime_flags) &&
bdev->bd_openers == 0)
disk->part0->bd_openers == 0)
nbd_disconnect_and_put(nbd);
bdput(bdev);
nbd_config_put(nbd);
nbd_put(nbd);
@ -1815,18 +1788,11 @@ static int nbd_genl_size_set(struct genl_info *info, struct nbd_device *nbd)
if (info->attrs[NBD_ATTR_SIZE_BYTES])
bytes = nla_get_u64(info->attrs[NBD_ATTR_SIZE_BYTES]);
if (info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]) {
if (info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES])
bsize = nla_get_u64(info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]);
if (!bsize)
bsize = NBD_DEF_BLKSIZE;
if (!nbd_is_valid_blksize(bsize)) {
printk(KERN_ERR "Invalid block size %llu\n", bsize);
return -EINVAL;
}
}
if (bytes != config->bytesize || bsize != config->blksize)
nbd_size_set(nbd, bsize, div64_u64(bytes, bsize));
return nbd_set_size(nbd, bytes, bsize);
return 0;
}

9
drivers/block/pktcdvd.c
View File

@ -2130,8 +2130,7 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
}
set_capacity(pd->disk, lba << 2);
set_capacity(pd->bdev->bd_disk, lba << 2);
bd_set_nr_sectors(pd->bdev, lba << 2);
set_capacity_and_notify(pd->bdev->bd_disk, lba << 2);
q = bdev_get_queue(pd->bdev);
if (write) {
@ -2584,9 +2583,11 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
case CDROM_LAST_WRITTEN:
case CDROM_SEND_PACKET:
case SCSI_IOCTL_SEND_COMMAND:
ret = __blkdev_driver_ioctl(pd->bdev, mode, cmd, arg);
if (!bdev->bd_disk->fops->ioctl)
ret = -ENOTTY;
else
ret = bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
break;
default:
pkt_dbg(2, pd, "Unknown ioctl (%x)\n", cmd);
ret = -ENOTTY;

43
drivers/block/rbd.c
View File

@ -692,12 +692,9 @@ static void rbd_release(struct gendisk *disk, fmode_t mode)
put_device(&rbd_dev->dev);
}
static int rbd_ioctl_set_ro(struct rbd_device *rbd_dev, unsigned long arg)
static int rbd_set_read_only(struct block_device *bdev, bool ro)
{
int ro;
if (get_user(ro, (int __user *)arg))
return -EFAULT;
struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
/*
* Both images mapped read-only and snapshots can't be marked
@ -710,43 +707,14 @@ static int rbd_ioctl_set_ro(struct rbd_device *rbd_dev, unsigned long arg)
rbd_assert(!rbd_is_snap(rbd_dev));
}
/* Let blkdev_roset() handle it */
return -ENOTTY;
return 0;
}
static int rbd_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
int ret;
switch (cmd) {
case BLKROSET:
ret = rbd_ioctl_set_ro(rbd_dev, arg);
break;
default:
ret = -ENOTTY;
}
return ret;
}
#ifdef CONFIG_COMPAT
static int rbd_compat_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
return rbd_ioctl(bdev, mode, cmd, arg);
}
#endif /* CONFIG_COMPAT */
static const struct block_device_operations rbd_bd_ops = {
.owner = THIS_MODULE,
.open = rbd_open,
.release = rbd_release,
.ioctl = rbd_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = rbd_compat_ioctl,
#endif
.set_read_only = rbd_set_read_only,
};
/*
@ -4920,8 +4888,7 @@ static void rbd_dev_update_size(struct rbd_device *rbd_dev)
!test_bit(RBD_DEV_FLAG_REMOVING, &rbd_dev->flags)) {
size = (sector_t)rbd_dev->mapping.size / SECTOR_SIZE;
dout("setting size to %llu sectors", (unsigned long long)size);
set_capacity(rbd_dev->disk, size);
revalidate_disk_size(rbd_dev->disk, true);
set_capacity_and_notify(rbd_dev->disk, size);
}
}

3
drivers/block/rnbd/rnbd-clt.c
View File

@ -100,8 +100,7 @@ static int rnbd_clt_change_capacity(struct rnbd_clt_dev *dev,
rnbd_clt_info(dev, "Device size changed from %zu to %zu sectors\n",
dev->nsectors, new_nsectors);
dev->nsectors = new_nsectors;
set_capacity(dev->gd, dev->nsectors);
revalidate_disk_size(dev->gd, true);
set_capacity_and_notify(dev->gd, dev->nsectors);
return 0;
}

17
drivers/block/swim.c
View File

@ -745,18 +745,6 @@ static const struct block_device_operations floppy_fops = {
.check_events = floppy_check_events,
};
static struct kobject *floppy_find(dev_t dev, int *part, void *data)
{
struct swim_priv *swd = data;
int drive = (*part & 3);
if (drive >= swd->floppy_count)
return NULL;
*part = 0;
return get_disk_and_module(swd->unit[drive].disk);
}
static int swim_add_floppy(struct swim_priv *swd, enum drive_location location)
{
struct floppy_state *fs = &swd->unit[swd->floppy_count];
@ -846,9 +834,6 @@ static int swim_floppy_init(struct swim_priv *swd)
add_disk(swd->unit[drive].disk);
}
blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
floppy_find, NULL, swd);
return 0;
exit_put_disks:
@ -932,8 +917,6 @@ static int swim_remove(struct platform_device *dev)
int drive;
struct resource *res;
blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
for (drive = 0; drive < swd->floppy_count; drive++) {
del_gendisk(swd->unit[drive].disk);
blk_cleanup_queue(swd->unit[drive].disk->queue);

3
drivers/block/virtio_blk.c
View File

@ -470,7 +470,7 @@ static void virtblk_update_capacity(struct virtio_blk *vblk, bool resize)
cap_str_10,
cap_str_2);
set_capacity_revalidate_and_notify(vblk->disk, capacity, true);
set_capacity_and_notify(vblk->disk, capacity);
}
static void virtblk_config_changed_work(struct work_struct *work)
@ -598,7 +598,6 @@ static void virtblk_update_cache_mode(struct virtio_device *vdev)
struct virtio_blk *vblk = vdev->priv;
blk_queue_write_cache(vblk->disk->queue, writeback, false);
revalidate_disk_size(vblk->disk, true);
}
static const char *const virtblk_cache_types[] = {

4
drivers/block/xen-blkback/common.h
View File

@ -356,9 +356,7 @@ struct pending_req {
};
#define vbd_sz(_v) ((_v)->bdev->bd_part ? \
(_v)->bdev->bd_part->nr_sects : \
get_capacity((_v)->bdev->bd_disk))
#define vbd_sz(_v) bdev_nr_sectors((_v)->bdev)
#define xen_blkif_get(_b) (atomic_inc(&(_b)->refcnt))
#define xen_blkif_put(_b) \

22
drivers/block/xen-blkfront.c
View File

@ -2153,7 +2153,7 @@ static void blkfront_closing(struct blkfront_info *info)
}
if (info->gd)
bdev = bdget_disk(info->gd, 0);
bdev = bdgrab(info->gd->part0);
mutex_unlock(&info->mutex);
@ -2370,7 +2370,7 @@ static void blkfront_connect(struct blkfront_info *info)
return;
printk(KERN_INFO "Setting capacity to %Lu\n",
sectors);
set_capacity_revalidate_and_notify(info->gd, sectors, true);
set_capacity_and_notify(info->gd, sectors);
return;
case BLKIF_STATE_SUSPENDED:
@ -2518,7 +2518,7 @@ static int blkfront_remove(struct xenbus_device *xbdev)
disk = info->gd;
if (disk)
bdev = bdget_disk(disk, 0);
bdev = bdgrab(disk->part0);
info->xbdev = NULL;
mutex_unlock(&info->mutex);
@ -2595,19 +2595,11 @@ out:
static void blkif_release(struct gendisk *disk, fmode_t mode)
{
struct blkfront_info *info = disk->private_data;
struct block_device *bdev;
struct xenbus_device *xbdev;
mutex_lock(&blkfront_mutex);
bdev = bdget_disk(disk, 0);
if (!bdev) {
WARN(1, "Block device %s yanked out from us!\n", disk->disk_name);
if (disk->part0->bd_openers)
goto out_mutex;
}
if (bdev->bd_openers)
goto out;
/*
* Check if we have been instructed to close. We will have
@ -2619,7 +2611,7 @@ static void blkif_release(struct gendisk *disk, fmode_t mode)
if (xbdev && xbdev->state == XenbusStateClosing) {
/* pending switch to state closed */
dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n");
dev_info(disk_to_dev(disk), "releasing disk\n");
xlvbd_release_gendisk(info);
xenbus_frontend_closed(info->xbdev);
}
@ -2628,14 +2620,12 @@ static void blkif_release(struct gendisk *disk, fmode_t mode)
if (!xbdev) {
/* sudden device removal */
dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n");
dev_info(disk_to_dev(disk), "releasing disk\n");
xlvbd_release_gendisk(info);
disk->private_data = NULL;
free_info(info);
}
out:
bdput(bdev);
out_mutex:
mutex_unlock(&blkfront_mutex);
}

525
drivers/block/z2ram.c
View File

@ -42,7 +42,6 @@
#include <linux/zorro.h>
#define Z2MINOR_COMBINED (0)
#define Z2MINOR_Z2ONLY (1)
#define Z2MINOR_CHIPONLY (2)
@ -50,28 +49,28 @@
#define Z2MINOR_MEMLIST2 (5)
#define Z2MINOR_MEMLIST3 (6)
#define Z2MINOR_MEMLIST4 (7)
#define Z2MINOR_COUNT (8) /* Move this down when adding a new minor */
#define Z2MINOR_COUNT (8) /* Move this down when adding a new minor */
#define Z2RAM_CHUNK1024 ( Z2RAM_CHUNKSIZE >> 10 )
static DEFINE_MUTEX(z2ram_mutex);
static u_long *z2ram_map = NULL;
static u_long z2ram_size = 0;
static int z2_count = 0;
static int chip_count = 0;
static int list_count = 0;
static int current_device = -1;
static u_long *z2ram_map = NULL;
static u_long z2ram_size = 0;
static int z2_count = 0;
static int chip_count = 0;
static int list_count = 0;
static int current_device = -1;
static DEFINE_SPINLOCK(z2ram_lock);
static struct gendisk *z2ram_gendisk;
static struct gendisk *z2ram_gendisk[Z2MINOR_COUNT];
static blk_status_t z2_queue_rq(struct blk_mq_hw_ctx *hctx,
const struct blk_mq_queue_data *bd)
{
struct request *req = bd->rq;
unsigned long start = blk_rq_pos(req) << 9;
unsigned long len = blk_rq_cur_bytes(req);
unsigned long len = blk_rq_cur_bytes(req);
blk_mq_start_request(req);
@ -92,7 +91,7 @@ static blk_status_t z2_queue_rq(struct blk_mq_hw_ctx *hctx,
if (len < size)
size = len;
addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
addr += z2ram_map[start >> Z2RAM_CHUNKSHIFT];
if (rq_data_dir(req) == READ)
memcpy(buffer, (char *)addr, size);
else
@ -106,323 +105,319 @@ static blk_status_t z2_queue_rq(struct blk_mq_hw_ctx *hctx,
return BLK_STS_OK;
}
static void
get_z2ram( void )
static void get_z2ram(void)
{
int i;
int i;
for ( i = 0; i < Z2RAM_SIZE / Z2RAM_CHUNKSIZE; i++ )
{
if ( test_bit( i, zorro_unused_z2ram ) )
{
z2_count++;
z2ram_map[z2ram_size++] = (unsigned long)ZTWO_VADDR(Z2RAM_START) +
(i << Z2RAM_CHUNKSHIFT);
clear_bit( i, zorro_unused_z2ram );
for (i = 0; i < Z2RAM_SIZE / Z2RAM_CHUNKSIZE; i++) {
if (test_bit(i, zorro_unused_z2ram)) {
z2_count++;
z2ram_map[z2ram_size++] =
(unsigned long)ZTWO_VADDR(Z2RAM_START) +
(i << Z2RAM_CHUNKSHIFT);
clear_bit(i, zorro_unused_z2ram);
}
}
}
return;
return;
}
static void
get_chipram( void )
static void get_chipram(void)
{
while ( amiga_chip_avail() > ( Z2RAM_CHUNKSIZE * 4 ) )
{
chip_count++;
z2ram_map[ z2ram_size ] =
(u_long)amiga_chip_alloc( Z2RAM_CHUNKSIZE, "z2ram" );
while (amiga_chip_avail() > (Z2RAM_CHUNKSIZE * 4)) {
chip_count++;
z2ram_map[z2ram_size] =
(u_long) amiga_chip_alloc(Z2RAM_CHUNKSIZE, "z2ram");
if ( z2ram_map[ z2ram_size ] == 0 )
{
break;
if (z2ram_map[z2ram_size] == 0) {
break;
}
z2ram_size++;
}
z2ram_size++;
}
return;
return;
}
static int z2_open(struct block_device *bdev, fmode_t mode)
{
int device;
int max_z2_map = ( Z2RAM_SIZE / Z2RAM_CHUNKSIZE ) *
sizeof( z2ram_map[0] );
int max_chip_map = ( amiga_chip_size / Z2RAM_CHUNKSIZE ) *
sizeof( z2ram_map[0] );
int rc = -ENOMEM;
int device;
int max_z2_map = (Z2RAM_SIZE / Z2RAM_CHUNKSIZE) * sizeof(z2ram_map[0]);
int max_chip_map = (amiga_chip_size / Z2RAM_CHUNKSIZE) *
sizeof(z2ram_map[0]);
int rc = -ENOMEM;
device = MINOR(bdev->bd_dev);
device = MINOR(bdev->bd_dev);
mutex_lock(&z2ram_mutex);
if ( current_device != -1 && current_device != device )
{
rc = -EBUSY;
goto err_out;
}
mutex_lock(&z2ram_mutex);
if (current_device != -1 && current_device != device) {
rc = -EBUSY;
goto err_out;
}
if ( current_device == -1 )
{
z2_count = 0;
chip_count = 0;
list_count = 0;
z2ram_size = 0;
if (current_device == -1) {
z2_count = 0;
chip_count = 0;
list_count = 0;
z2ram_size = 0;
/* Use a specific list entry. */
if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
int index = device - Z2MINOR_MEMLIST1 + 1;
unsigned long size, paddr, vaddr;
/* Use a specific list entry. */
if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
int index = device - Z2MINOR_MEMLIST1 + 1;
unsigned long size, paddr, vaddr;
if (index >= m68k_realnum_memory) {
printk( KERN_ERR DEVICE_NAME
": no such entry in z2ram_map\n" );
goto err_out;
}
if (index >= m68k_realnum_memory) {
printk(KERN_ERR DEVICE_NAME
": no such entry in z2ram_map\n");
goto err_out;
}
paddr = m68k_memory[index].addr;
size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE-1);
paddr = m68k_memory[index].addr;
size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE - 1);
#ifdef __powerpc__
/* FIXME: ioremap doesn't build correct memory tables. */
{
vfree(vmalloc (size));
}
/* FIXME: ioremap doesn't build correct memory tables. */
{
vfree(vmalloc(size));
}
vaddr = (unsigned long)ioremap_wt(paddr, size);
vaddr = (unsigned long)ioremap_wt(paddr, size);
#else
vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size);
vaddr =
(unsigned long)z_remap_nocache_nonser(paddr, size);
#endif
z2ram_map =
kmalloc_array(size / Z2RAM_CHUNKSIZE,
sizeof(z2ram_map[0]),
GFP_KERNEL);
if ( z2ram_map == NULL )
{
printk( KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n" );
goto err_out;
z2ram_map =
kmalloc_array(size / Z2RAM_CHUNKSIZE,
sizeof(z2ram_map[0]), GFP_KERNEL);
if (z2ram_map == NULL) {
printk(KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n");
goto err_out;
}
while (size) {
z2ram_map[z2ram_size++] = vaddr;
size -= Z2RAM_CHUNKSIZE;
vaddr += Z2RAM_CHUNKSIZE;
list_count++;
}
if (z2ram_size != 0)
printk(KERN_INFO DEVICE_NAME
": using %iK List Entry %d Memory\n",
list_count * Z2RAM_CHUNK1024, index);
} else
switch (device) {
case Z2MINOR_COMBINED:
z2ram_map =
kmalloc(max_z2_map + max_chip_map,
GFP_KERNEL);
if (z2ram_map == NULL) {
printk(KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n");
goto err_out;
}
get_z2ram();
get_chipram();
if (z2ram_size != 0)
printk(KERN_INFO DEVICE_NAME
": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
z2_count * Z2RAM_CHUNK1024,
chip_count * Z2RAM_CHUNK1024,
(z2_count +
chip_count) * Z2RAM_CHUNK1024);
break;
case Z2MINOR_Z2ONLY:
z2ram_map = kmalloc(max_z2_map, GFP_KERNEL);
if (z2ram_map == NULL) {
printk(KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n");
goto err_out;
}
get_z2ram();
if (z2ram_size != 0)
printk(KERN_INFO DEVICE_NAME
": using %iK of Zorro II RAM\n",
z2_count * Z2RAM_CHUNK1024);
break;
case Z2MINOR_CHIPONLY:
z2ram_map = kmalloc(max_chip_map, GFP_KERNEL);
if (z2ram_map == NULL) {
printk(KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n");
goto err_out;
}
get_chipram();
if (z2ram_size != 0)
printk(KERN_INFO DEVICE_NAME
": using %iK Chip RAM\n",
chip_count * Z2RAM_CHUNK1024);
break;
default:
rc = -ENODEV;
goto err_out;
break;
}
if (z2ram_size == 0) {
printk(KERN_NOTICE DEVICE_NAME
": no unused ZII/Chip RAM found\n");
goto err_out_kfree;
}
while (size) {
z2ram_map[ z2ram_size++ ] = vaddr;
size -= Z2RAM_CHUNKSIZE;
vaddr += Z2RAM_CHUNKSIZE;
list_count++;
}
if ( z2ram_size != 0 )
printk( KERN_INFO DEVICE_NAME
": using %iK List Entry %d Memory\n",
list_count * Z2RAM_CHUNK1024, index );
} else
switch ( device )
{
case Z2MINOR_COMBINED:
z2ram_map = kmalloc( max_z2_map + max_chip_map, GFP_KERNEL );
if ( z2ram_map == NULL )
{
printk( KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n" );
goto err_out;
}
get_z2ram();
get_chipram();
if ( z2ram_size != 0 )
printk( KERN_INFO DEVICE_NAME
": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
z2_count * Z2RAM_CHUNK1024,
chip_count * Z2RAM_CHUNK1024,
( z2_count + chip_count ) * Z2RAM_CHUNK1024 );
break;
case Z2MINOR_Z2ONLY:
z2ram_map = kmalloc( max_z2_map, GFP_KERNEL );
if ( z2ram_map == NULL )
{
printk( KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n" );
goto err_out;
}
get_z2ram();
if ( z2ram_size != 0 )
printk( KERN_INFO DEVICE_NAME
": using %iK of Zorro II RAM\n",
z2_count * Z2RAM_CHUNK1024 );
break;
case Z2MINOR_CHIPONLY:
z2ram_map = kmalloc( max_chip_map, GFP_KERNEL );
if ( z2ram_map == NULL )
{
printk( KERN_ERR DEVICE_NAME
": cannot get mem for z2ram_map\n" );
goto err_out;
}
get_chipram();
if ( z2ram_size != 0 )
printk( KERN_INFO DEVICE_NAME
": using %iK Chip RAM\n",
chip_count * Z2RAM_CHUNK1024 );
break;
default:
rc = -ENODEV;
goto err_out;
break;
current_device = device;
z2ram_size <<= Z2RAM_CHUNKSHIFT;
set_capacity(z2ram_gendisk[device], z2ram_size >> 9);
}
if ( z2ram_size == 0 )
{
printk( KERN_NOTICE DEVICE_NAME
": no unused ZII/Chip RAM found\n" );
goto err_out_kfree;
}
current_device = device;
z2ram_size <<= Z2RAM_CHUNKSHIFT;
set_capacity(z2ram_gendisk, z2ram_size >> 9);
}
mutex_unlock(&z2ram_mutex);
return 0;
mutex_unlock(&z2ram_mutex);
return 0;
err_out_kfree:
kfree(z2ram_map);
kfree(z2ram_map);
err_out:
mutex_unlock(&z2ram_mutex);
return rc;
mutex_unlock(&z2ram_mutex);
return rc;
}
static void
z2_release(struct gendisk *disk, fmode_t mode)
static void z2_release(struct gendisk *disk, fmode_t mode)
{
mutex_lock(&z2ram_mutex);
if ( current_device == -1 ) {
mutex_unlock(&z2ram_mutex);
return;
}
mutex_unlock(&z2ram_mutex);
/*
* FIXME: unmap memory
*/
mutex_lock(&z2ram_mutex);
if (current_device == -1) {
mutex_unlock(&z2ram_mutex);
return;
}
mutex_unlock(&z2ram_mutex);
/*
* FIXME: unmap memory
*/
}
static const struct block_device_operations z2_fops =
{
.owner = THIS_MODULE,
.open = z2_open,
.release = z2_release,
static const struct block_device_operations z2_fops = {
.owner = THIS_MODULE,
.open = z2_open,
.release = z2_release,
};
static struct kobject *z2_find(dev_t dev, int *part, void *data)
{
*part = 0;
return get_disk_and_module(z2ram_gendisk);
}
static struct request_queue *z2_queue;
static struct blk_mq_tag_set tag_set;
static const struct blk_mq_ops z2_mq_ops = {
.queue_rq = z2_queue_rq,
.queue_rq = z2_queue_rq,
};
static int __init
z2_init(void)
static int z2ram_register_disk(int minor)
{
int ret;
struct request_queue *q;
struct gendisk *disk;
if (!MACH_IS_AMIGA)
return -ENODEV;
disk = alloc_disk(1);
if (!disk)
return -ENOMEM;
ret = -EBUSY;
if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
goto err;
q = blk_mq_init_queue(&tag_set);
if (IS_ERR(q)) {
put_disk(disk);
return PTR_ERR(q);
}
ret = -ENOMEM;
z2ram_gendisk = alloc_disk(1);
if (!z2ram_gendisk)
goto out_disk;
disk->major = Z2RAM_MAJOR;
disk->first_minor = minor;
disk->fops = &z2_fops;
if (minor)
sprintf(disk->disk_name, "z2ram%d", minor);
else
sprintf(disk->disk_name, "z2ram");
disk->queue = q;
z2_queue = blk_mq_init_sq_queue(&tag_set, &z2_mq_ops, 16,
BLK_MQ_F_SHOULD_MERGE);
if (IS_ERR(z2_queue)) {
ret = PTR_ERR(z2_queue);
z2_queue = NULL;
goto out_queue;
}
z2ram_gendisk[minor] = disk;
add_disk(disk);
return 0;
}
z2ram_gendisk->major = Z2RAM_MAJOR;
z2ram_gendisk->first_minor = 0;
z2ram_gendisk->fops = &z2_fops;
sprintf(z2ram_gendisk->disk_name, "z2ram");
static int __init z2_init(void)
{
int ret, i;
z2ram_gendisk->queue = z2_queue;
add_disk(z2ram_gendisk);
blk_register_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT, THIS_MODULE,
z2_find, NULL, NULL);
if (!MACH_IS_AMIGA)
return -ENODEV;
return 0;
if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
return -EBUSY;
out_queue:
put_disk(z2ram_gendisk);
out_disk:
unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
err:
return ret;
tag_set.ops = &z2_mq_ops;
tag_set.nr_hw_queues = 1;
tag_set.nr_maps = 1;
tag_set.queue_depth = 16;
tag_set.numa_node = NUMA_NO_NODE;
tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ret = blk_mq_alloc_tag_set(&tag_set);
if (ret)
goto out_unregister_blkdev;
for (i = 0; i < Z2MINOR_COUNT; i++) {
ret = z2ram_register_disk(i);
if (ret && i == 0)
goto out_free_tagset;
}
return 0;
out_free_tagset:
blk_mq_free_tag_set(&tag_set);
out_unregister_blkdev:
unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
return ret;
}
static void __exit z2_exit(void)
{
int i, j;
blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT);
unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
del_gendisk(z2ram_gendisk);
put_disk(z2ram_gendisk);
blk_cleanup_queue(z2_queue);
blk_mq_free_tag_set(&tag_set);
int i, j;
if ( current_device != -1 )
{
i = 0;
unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
for ( j = 0 ; j < z2_count; j++ )
{
set_bit( i++, zorro_unused_z2ram );
for (i = 0; i < Z2MINOR_COUNT; i++) {
del_gendisk(z2ram_gendisk[i]);
blk_cleanup_queue(z2ram_gendisk[i]->queue);
put_disk(z2ram_gendisk[i]);
}
blk_mq_free_tag_set(&tag_set);
if (current_device != -1) {
i = 0;
for (j = 0; j < z2_count; j++) {
set_bit(i++, zorro_unused_z2ram);
}
for (j = 0; j < chip_count; j++) {
if (z2ram_map[i]) {
amiga_chip_free((void *)z2ram_map[i++]);
}
}
if (z2ram_map != NULL) {
kfree(z2ram_map);
}
}
for ( j = 0 ; j < chip_count; j++ )
{
if ( z2ram_map[ i ] )
{
amiga_chip_free( (void *) z2ram_map[ i++ ] );
}
}
if ( z2ram_map != NULL )
{
kfree( z2ram_map );
}
}
return;
}
return;
}
module_init(z2_init);
module_exit(z2_exit);

34
drivers/block/zram/zram_drv.c
View File

@ -403,13 +403,10 @@ static void reset_bdev(struct zram *zram)
return;
bdev = zram->bdev;
if (zram->old_block_size)
set_blocksize(bdev, zram->old_block_size);
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
/* hope filp_close flush all of IO */
filp_close(zram->backing_dev, NULL);
zram->backing_dev = NULL;
zram->old_block_size = 0;
zram->bdev = NULL;
zram->disk->fops = &zram_devops;
kvfree(zram->bitmap);
@ -454,7 +451,7 @@ static ssize_t backing_dev_store(struct device *dev,
struct file *backing_dev = NULL;
struct inode *inode;
struct address_space *mapping;
unsigned int bitmap_sz, old_block_size = 0;
unsigned int bitmap_sz;
unsigned long nr_pages, *bitmap = NULL;
struct block_device *bdev = NULL;
int err;
@ -509,14 +506,8 @@ static ssize_t backing_dev_store(struct device *dev,
goto out;
}
old_block_size = block_size(bdev);
err = set_blocksize(bdev, PAGE_SIZE);
if (err)
goto out;
reset_bdev(zram);
zram->old_block_size = old_block_size;
zram->bdev = bdev;
zram->backing_dev = backing_dev;
zram->bitmap = bitmap;
@ -1710,8 +1701,8 @@ static void zram_reset_device(struct zram *zram)
disksize = zram->disksize;
zram->disksize = 0;
set_capacity(zram->disk, 0);
part_stat_set_all(&zram->disk->part0, 0);
set_capacity_and_notify(zram->disk, 0);
part_stat_set_all(zram->disk->part0, 0);
up_write(&zram->init_lock);
/* I/O operation under all of CPU are done so let's free */
@ -1756,9 +1747,7 @@ static ssize_t disksize_store(struct device *dev,
zram->comp = comp;
zram->disksize = disksize;
set_capacity(zram->disk, zram->disksize >> SECTOR_SHIFT);
revalidate_disk_size(zram->disk, true);
set_capacity_and_notify(zram->disk, zram->disksize >> SECTOR_SHIFT);
up_write(&zram->init_lock);
return len;
@ -1786,15 +1775,12 @@ static ssize_t reset_store(struct device *dev,
return -EINVAL;
zram = dev_to_zram(dev);
bdev = bdget_disk(zram->disk, 0);
if (!bdev)
return -ENOMEM;
bdev = zram->disk->part0;
mutex_lock(&bdev->bd_mutex);
/* Do not reset an active device or claimed device */
if (bdev->bd_openers || zram->claim) {
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);
return -EBUSY;
}
@ -1805,8 +1791,6 @@ static ssize_t reset_store(struct device *dev,
/* Make sure all the pending I/O are finished */
fsync_bdev(bdev);
zram_reset_device(zram);
revalidate_disk_size(zram->disk, true);
bdput(bdev);
mutex_lock(&bdev->bd_mutex);
zram->claim = false;
@ -1992,16 +1976,11 @@ out_free_dev:
static int zram_remove(struct zram *zram)
{
struct block_device *bdev;
bdev = bdget_disk(zram->disk, 0);
if (!bdev)
return -ENOMEM;
struct block_device *bdev = zram->disk->part0;
mutex_lock(&bdev->bd_mutex);
if (bdev->bd_openers || zram->claim) {
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);
return -EBUSY;
}
@ -2013,7 +1992,6 @@ static int zram_remove(struct zram *zram)
/* Make sure all the pending I/O are finished */
fsync_bdev(bdev);
zram_reset_device(zram);
bdput(bdev);
pr_info("Removed device: %s\n", zram->disk->disk_name);

1
drivers/block/zram/zram_drv.h
View File

@ -119,7 +119,6 @@ struct zram {
bool wb_limit_enable;
u64 bd_wb_limit;
struct block_device *bdev;
unsigned int old_block_size;
unsigned long *bitmap;
unsigned long nr_pages;
#endif

66
drivers/ide/ide-probe.c
View File

@ -902,65 +902,14 @@ out_up:
return 1;
}
static int ata_lock(dev_t dev, void *data)
static void ata_probe(dev_t dev)
{
/* FIXME: we want to pin hwif down */
return 0;
request_module("ide-disk");
request_module("ide-cd");
request_module("ide-tape");
request_module("ide-floppy");
}
static struct kobject *ata_probe(dev_t dev, int *part, void *data)
{
ide_hwif_t *hwif = data;
int unit = *part >> PARTN_BITS;
ide_drive_t *drive = hwif->devices[unit];
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
return NULL;
if (drive->media == ide_disk)
request_module("ide-disk");
if (drive->media == ide_cdrom || drive->media == ide_optical)
request_module("ide-cd");
if (drive->media == ide_tape)
request_module("ide-tape");
if (drive->media == ide_floppy)
request_module("ide-floppy");
return NULL;
}
static struct kobject *exact_match(dev_t dev, int *part, void *data)
{
struct gendisk *p = data;
*part &= (1 << PARTN_BITS) - 1;
return &disk_to_dev(p)->kobj;
}
static int exact_lock(dev_t dev, void *data)
{
struct gendisk *p = data;
if (!get_disk_and_module(p))
return -1;
return 0;
}
void ide_register_region(struct gendisk *disk)
{
blk_register_region(MKDEV(disk->major, disk->first_minor),
disk->minors, NULL, exact_match, exact_lock, disk);
}
EXPORT_SYMBOL_GPL(ide_register_region);
void ide_unregister_region(struct gendisk *disk)
{
blk_unregister_region(MKDEV(disk->major, disk->first_minor),
disk->minors);
}
EXPORT_SYMBOL_GPL(ide_unregister_region);
void ide_init_disk(struct gendisk *disk, ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
@ -999,7 +948,7 @@ static int hwif_init(ide_hwif_t *hwif)
return 0;
}
if (register_blkdev(hwif->major, hwif->name))
if (__register_blkdev(hwif->major, hwif->name, ata_probe))
return 0;
if (!hwif->sg_max_nents)
@ -1021,8 +970,6 @@ static int hwif_init(ide_hwif_t *hwif)
goto out;
}
blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS,
THIS_MODULE, ata_probe, ata_lock, hwif);
return 1;
out:
@ -1611,7 +1558,6 @@ static void ide_unregister(ide_hwif_t *hwif)
/*
* Remove us from the kernel's knowledge
*/
blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
kfree(hwif->sg_table);
unregister_blkdev(hwif->major, hwif->name);

2
drivers/ide/ide-tape.c
View File

@ -1822,7 +1822,6 @@ static void ide_tape_remove(ide_drive_t *drive)
ide_proc_unregister_driver(drive, tape->driver);
device_del(&tape->dev);
ide_unregister_region(tape->disk);
mutex_lock(&idetape_ref_mutex);
put_device(&tape->dev);
@ -2026,7 +2025,6 @@ static int ide_tape_probe(ide_drive_t *drive)
"n%s", tape->name);
g->fops = &idetape_block_ops;
ide_register_region(g);
return 0;

9
drivers/md/bcache/request.c
View File

@ -475,7 +475,7 @@ struct search {
unsigned int read_dirty_data:1;
unsigned int cache_missed:1;
struct hd_struct *part;
struct block_device *part;
unsigned long start_time;
struct btree_op op;
@ -1073,7 +1073,7 @@ struct detached_dev_io_private {
unsigned long start_time;
bio_end_io_t *bi_end_io;
void *bi_private;
struct hd_struct *part;
struct block_device *part;
};
static void detached_dev_end_io(struct bio *bio)
@ -1230,8 +1230,9 @@ static int cached_dev_ioctl(struct bcache_device *d, fmode_t mode,
if (dc->io_disable)
return -EIO;
return __blkdev_driver_ioctl(dc->bdev, mode, cmd, arg);
if (!dc->bdev->bd_disk->fops->ioctl)
return -ENOTTY;
return dc->bdev->bd_disk->fops->ioctl(dc->bdev, mode, cmd, arg);
}
void bch_cached_dev_request_init(struct cached_dev *dc)

29
drivers/md/bcache/super.c
View File

@ -1408,7 +1408,7 @@ static int cached_dev_init(struct cached_dev *dc, unsigned int block_size)
q->limits.raid_partial_stripes_expensive;
ret = bcache_device_init(&dc->disk, block_size,
dc->bdev->bd_part->nr_sects - dc->sb.data_offset,
bdev_nr_sectors(dc->bdev) - dc->sb.data_offset,
dc->bdev, &bcache_cached_ops);
if (ret)
return ret;
@ -1447,8 +1447,7 @@ static int register_bdev(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
goto err;
err = "error creating kobject";
if (kobject_add(&dc->disk.kobj, &part_to_dev(bdev->bd_part)->kobj,
"bcache"))
if (kobject_add(&dc->disk.kobj, bdev_kobj(bdev), "bcache"))
goto err;
if (bch_cache_accounting_add_kobjs(&dc->accounting, &dc->disk.kobj))
goto err;
@ -2342,9 +2341,7 @@ static int register_cache(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
goto err;
}
if (kobject_add(&ca->kobj,
&part_to_dev(bdev->bd_part)->kobj,
"bcache")) {
if (kobject_add(&ca->kobj, bdev_kobj(bdev), "bcache")) {
err = "error calling kobject_add";
ret = -ENOMEM;
goto out;
@ -2383,38 +2380,38 @@ kobj_attribute_write(register, register_bcache);
kobj_attribute_write(register_quiet, register_bcache);
kobj_attribute_write(pendings_cleanup, bch_pending_bdevs_cleanup);
static bool bch_is_open_backing(struct block_device *bdev)
static bool bch_is_open_backing(dev_t dev)
{
struct cache_set *c, *tc;
struct cached_dev *dc, *t;
list_for_each_entry_safe(c, tc, &bch_cache_sets, list)
list_for_each_entry_safe(dc, t, &c->cached_devs, list)
if (dc->bdev == bdev)
if (dc->bdev->bd_dev == dev)
return true;
list_for_each_entry_safe(dc, t, &uncached_devices, list)
if (dc->bdev == bdev)
if (dc->bdev->bd_dev == dev)
return true;
return false;
}
static bool bch_is_open_cache(struct block_device *bdev)
static bool bch_is_open_cache(dev_t dev)
{
struct cache_set *c, *tc;
list_for_each_entry_safe(c, tc, &bch_cache_sets, list) {
struct cache *ca = c->cache;
if (ca->bdev == bdev)
if (ca->bdev->bd_dev == dev)
return true;
}
return false;
}
static bool bch_is_open(struct block_device *bdev)
static bool bch_is_open(dev_t dev)
{
return bch_is_open_cache(bdev) || bch_is_open_backing(bdev);
return bch_is_open_cache(dev) || bch_is_open_backing(dev);
}
struct async_reg_args {
@ -2538,9 +2535,11 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
sb);
if (IS_ERR(bdev)) {
if (bdev == ERR_PTR(-EBUSY)) {
bdev = lookup_bdev(strim(path));
dev_t dev;
mutex_lock(&bch_register_lock);
if (!IS_ERR(bdev) && bch_is_open(bdev))
if (lookup_bdev(strim(path), &dev) == 0 &&
bch_is_open(dev))
err = "device already registered";
else
err = "device busy";

7
drivers/md/dm-core.h
View File

@ -96,19 +96,12 @@ struct mapped_device {
*/
struct workqueue_struct *wq;
/*
* freeze/thaw support require holding onto a super block
*/
struct super_block *frozen_sb;
/* forced geometry settings */
struct hd_geometry geometry;
/* kobject and completion */
struct dm_kobject_holder kobj_holder;
struct block_device *bdev;
struct dm_stats stats;
/* for blk-mq request-based DM support */

3
drivers/md/dm-raid.c
View File

@ -700,8 +700,7 @@ static void rs_set_capacity(struct raid_set *rs)
{
struct gendisk *gendisk = dm_disk(dm_table_get_md(rs->ti->table));
set_capacity(gendisk, rs->md.array_sectors);
revalidate_disk_size(gendisk, true);
set_capacity_and_notify(gendisk, rs->md.array_sectors);
}
/*

2
drivers/md/dm-rq.c
View File

@ -397,7 +397,7 @@ static int map_request(struct dm_rq_target_io *tio)
}
/* The target has remapped the I/O so dispatch it */
trace_block_rq_remap(clone->q, clone, disk_devt(dm_disk(md)),
trace_block_rq_remap(clone, disk_devt(dm_disk(md)),
blk_rq_pos(rq));
ret = dm_dispatch_clone_request(clone, rq);
if (ret == BLK_STS_RESOURCE || ret == BLK_STS_DEV_RESOURCE) {

9
drivers/md/dm-table.c
View File

@ -347,16 +347,9 @@ static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode,
dev_t dm_get_dev_t(const char *path)
{
dev_t dev;
struct block_device *bdev;
bdev = lookup_bdev(path);
if (IS_ERR(bdev))
if (lookup_bdev(path, &dev))
dev = name_to_dev_t(path);
else {
dev = bdev->bd_dev;
bdput(bdev);
}
return dev;
}
EXPORT_SYMBOL_GPL(dm_get_dev_t);

58
drivers/md/dm.c
View File

@ -570,7 +570,10 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode,
}
}
r = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
if (!bdev->bd_disk->fops->ioctl)
r = -ENOTTY;
else
r = bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
out:
dm_unprepare_ioctl(md, srcu_idx);
return r;
@ -1274,8 +1277,7 @@ static blk_qc_t __map_bio(struct dm_target_io *tio)
break;
case DM_MAPIO_REMAPPED:
/* the bio has been remapped so dispatch it */
trace_block_bio_remap(clone->bi_disk->queue, clone,
bio_dev(io->orig_bio), sector);
trace_block_bio_remap(clone, bio_dev(io->orig_bio), sector);
ret = submit_bio_noacct(clone);
break;
case DM_MAPIO_KILL:
@ -1420,18 +1422,12 @@ static int __send_empty_flush(struct clone_info *ci)
*/
bio_init(&flush_bio, NULL, 0);
flush_bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH | REQ_SYNC;
flush_bio.bi_disk = ci->io->md->disk;
bio_associate_blkg(&flush_bio);
ci->bio = &flush_bio;
ci->sector_count = 0;
/*
* Empty flush uses a statically initialized bio, as the base for
* cloning. However, blkg association requires that a bdev is
* associated with a gendisk, which doesn't happen until the bdev is
* opened. So, blkg association is done at issue time of the flush
* rather than when the device is created in alloc_dev().
*/
bio_set_dev(ci->bio, ci->io->md->bdev);
BUG_ON(bio_has_data(ci->bio));
while ((ti = dm_table_get_target(ci->map, target_nr++)))
__send_duplicate_bios(ci, ti, ti->num_flush_bios, NULL);
@ -1611,12 +1607,12 @@ static blk_qc_t __split_and_process_bio(struct mapped_device *md,
* (by eliminating DM's splitting and just using bio_split)
*/
part_stat_lock();
__dm_part_stat_sub(&dm_disk(md)->part0,
__dm_part_stat_sub(dm_disk(md)->part0,
sectors[op_stat_group(bio_op(bio))], ci.sector_count);
part_stat_unlock();
bio_chain(b, bio);
trace_block_split(md->queue, b, bio->bi_iter.bi_sector);
trace_block_split(b, bio->bi_iter.bi_sector);
ret = submit_bio_noacct(bio);
break;
}
@ -1748,11 +1744,6 @@ static void cleanup_mapped_device(struct mapped_device *md)
cleanup_srcu_struct(&md->io_barrier);
if (md->bdev) {
bdput(md->bdev);
md->bdev = NULL;
}
mutex_destroy(&md->suspend_lock);
mutex_destroy(&md->type_lock);
mutex_destroy(&md->table_devices_lock);
@ -1844,10 +1835,6 @@ static struct mapped_device *alloc_dev(int minor)
if (!md->wq)
goto bad;
md->bdev = bdget_disk(md->disk, 0);
if (!md->bdev)
goto bad;
dm_stats_init(&md->stats);
/* Populate the mapping, nobody knows we exist yet */
@ -1972,8 +1959,7 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t,
if (size != dm_get_size(md))
memset(&md->geometry, 0, sizeof(md->geometry));
set_capacity(md->disk, size);
bd_set_nr_sectors(md->bdev, size);
set_capacity_and_notify(md->disk, size);
dm_table_event_callback(t, event_callback, md);
@ -2256,7 +2242,7 @@ EXPORT_SYMBOL_GPL(dm_put);
static bool md_in_flight_bios(struct mapped_device *md)
{
int cpu;
struct hd_struct *part = &dm_disk(md)->part0;
struct block_device *part = dm_disk(md)->part0;
long sum = 0;
for_each_possible_cpu(cpu) {
@ -2391,27 +2377,19 @@ static int lock_fs(struct mapped_device *md)
{
int r;
WARN_ON(md->frozen_sb);
WARN_ON(test_bit(DMF_FROZEN, &md->flags));
md->frozen_sb = freeze_bdev(md->bdev);
if (IS_ERR(md->frozen_sb)) {
r = PTR_ERR(md->frozen_sb);
md->frozen_sb = NULL;
return r;
}
set_bit(DMF_FROZEN, &md->flags);
return 0;
r = freeze_bdev(md->disk->part0);
if (!r)
set_bit(DMF_FROZEN, &md->flags);
return r;
}
static void unlock_fs(struct mapped_device *md)
{
if (!test_bit(DMF_FROZEN, &md->flags))
return;
thaw_bdev(md->bdev, md->frozen_sb);
md->frozen_sb = NULL;
thaw_bdev(md->disk->part0);
clear_bit(DMF_FROZEN, &md->flags);
}

8
drivers/md/md-cluster.c
View File

@ -581,8 +581,7 @@ static int process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg)
process_metadata_update(mddev, msg);
break;
case CHANGE_CAPACITY:
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
break;
case RESYNCING:
set_bit(MD_RESYNCING_REMOTE, &mddev->recovery);
@ -1296,13 +1295,10 @@ static void update_size(struct mddev *mddev, sector_t old_dev_sectors)
if (ret)
pr_err("%s:%d: failed to send CHANGE_CAPACITY msg\n",
__func__, __LINE__);
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
} else {
/* revert to previous sectors */
ret = mddev->pers->resize(mddev, old_dev_sectors);
if (!ret)
revalidate_disk_size(mddev->gendisk, true);
ret = __sendmsg(cinfo, &cmsg);
if (ret)
pr_err("%s:%d: failed to send METADATA_UPDATED msg\n",

6
drivers/md/md-linear.c
View File

@ -200,9 +200,8 @@ static int linear_add(struct mddev *mddev, struct md_rdev *rdev)
"copied raid_disks doesn't match mddev->raid_disks");
rcu_assign_pointer(mddev->private, newconf);
md_set_array_sectors(mddev, linear_size(mddev, 0, 0));
set_capacity(mddev->gendisk, mddev->array_sectors);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
mddev_resume(mddev);
revalidate_disk_size(mddev->gendisk, true);
kfree_rcu(oldconf, rcu);
return 0;
}
@ -258,8 +257,7 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio)
bio_endio(bio);
} else {
if (mddev->gendisk)
trace_block_bio_remap(bio->bi_disk->queue,
bio, disk_devt(mddev->gendisk),
trace_block_bio_remap(bio, disk_devt(mddev->gendisk),
bio_sector);
mddev_check_writesame(mddev, bio);
mddev_check_write_zeroes(mddev, bio);

115
drivers/md/md.c
View File

@ -464,7 +464,7 @@ struct md_io {
bio_end_io_t *orig_bi_end_io;
void *orig_bi_private;
unsigned long start_time;
struct hd_struct *part;
struct block_device *part;
};
static void md_end_io(struct bio *bio)
@ -2414,7 +2414,6 @@ EXPORT_SYMBOL(md_integrity_add_rdev);
static int bind_rdev_to_array(struct md_rdev *rdev, struct mddev *mddev)
{
char b[BDEVNAME_SIZE];
struct kobject *ko;
int err;
/* prevent duplicates */
@ -2477,9 +2476,8 @@ static int bind_rdev_to_array(struct md_rdev *rdev, struct mddev *mddev)
if ((err = kobject_add(&rdev->kobj, &mddev->kobj, "dev-%s", b)))
goto fail;
ko = &part_to_dev(rdev->bdev->bd_part)->kobj;
/* failure here is OK */
err = sysfs_create_link(&rdev->kobj, ko, "block");
err = sysfs_create_link(&rdev->kobj, bdev_kobj(rdev->bdev), "block");
rdev->sysfs_state = sysfs_get_dirent_safe(rdev->kobj.sd, "state");
rdev->sysfs_unack_badblocks =
sysfs_get_dirent_safe(rdev->kobj.sd, "unacknowledged_bad_blocks");
@ -5355,10 +5353,9 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len)
if (!err) {
mddev->array_sectors = sectors;
if (mddev->pers) {
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
}
if (mddev->pers)
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
}
mddev_unlock(mddev);
return err ?: len;
@ -5765,11 +5762,12 @@ static int md_alloc(dev_t dev, char *name)
return error;
}
static struct kobject *md_probe(dev_t dev, int *part, void *data)
static void md_probe(dev_t dev)
{
if (MAJOR(dev) == MD_MAJOR && MINOR(dev) >= 512)
return;
if (create_on_open)
md_alloc(dev, NULL);
return NULL;
}
static int add_named_array(const char *val, const struct kernel_param *kp)
@ -6107,8 +6105,7 @@ int do_md_run(struct mddev *mddev)
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
clear_bit(MD_NOT_READY, &mddev->flags);
mddev->changed = 1;
kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE);
@ -6423,10 +6420,9 @@ static int do_md_stop(struct mddev *mddev, int mode,
if (rdev->raid_disk >= 0)
sysfs_unlink_rdev(mddev, rdev);
set_capacity(disk, 0);
set_capacity_and_notify(disk, 0);
mutex_unlock(&mddev->open_mutex);
mddev->changed = 1;
revalidate_disk_size(disk, true);
if (mddev->ro)
mddev->ro = 0;
@ -6535,7 +6531,7 @@ static void autorun_devices(int part)
break;
}
md_probe(dev, NULL, NULL);
md_probe(dev);
mddev = mddev_find(dev);
if (!mddev || !mddev->gendisk) {
if (mddev)
@ -7257,8 +7253,8 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
if (mddev_is_clustered(mddev))
md_cluster_ops->update_size(mddev, old_dev_sectors);
else if (mddev->queue) {
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
}
}
return rv;
@ -7480,7 +7476,6 @@ static inline bool md_ioctl_valid(unsigned int cmd)
{
switch (cmd) {
case ADD_NEW_DISK:
case BLKROSET:
case GET_ARRAY_INFO:
case GET_BITMAP_FILE:
case GET_DISK_INFO:
@ -7507,7 +7502,6 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
int err = 0;
void __user *argp = (void __user *)arg;
struct mddev *mddev = NULL;
int ro;
bool did_set_md_closing = false;
if (!md_ioctl_valid(cmd))
@ -7687,35 +7681,6 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
goto unlock;
}
break;
case BLKROSET:
if (get_user(ro, (int __user *)(arg))) {
err = -EFAULT;
goto unlock;
}
err = -EINVAL;
/* if the bdev is going readonly the value of mddev->ro
* does not matter, no writes are coming
*/
if (ro)
goto unlock;
/* are we are already prepared for writes? */
if (mddev->ro != 1)
goto unlock;
/* transitioning to readauto need only happen for
* arrays that call md_write_start
*/
if (mddev->pers) {
err = restart_array(mddev);
if (err == 0) {
mddev->ro = 2;
set_disk_ro(mddev->gendisk, 0);
}
}
goto unlock;
}
/*
@ -7809,6 +7774,36 @@ static int md_compat_ioctl(struct block_device *bdev, fmode_t mode,
}
#endif /* CONFIG_COMPAT */
static int md_set_read_only(struct block_device *bdev, bool ro)
{
struct mddev *mddev = bdev->bd_disk->private_data;
int err;
err = mddev_lock(mddev);
if (err)
return err;
if (!mddev->raid_disks && !mddev->external) {
err = -ENODEV;
goto out_unlock;
}
/*
* Transitioning to read-auto need only happen for arrays that call
* md_write_start and which are not ready for writes yet.
*/
if (!ro && mddev->ro == 1 && mddev->pers) {
err = restart_array(mddev);
if (err)
goto out_unlock;
mddev->ro = 2;
}
out_unlock:
mddev_unlock(mddev);
return err;
}
static int md_open(struct block_device *bdev, fmode_t mode)
{
/*
@ -7886,6 +7881,7 @@ const struct block_device_operations md_fops =
#endif
.getgeo = md_getgeo,
.check_events = md_check_events,
.set_read_only = md_set_read_only,
};
static int md_thread(void *arg)
@ -8445,7 +8441,7 @@ static int is_mddev_idle(struct mddev *mddev, int init)
rcu_read_lock();
rdev_for_each_rcu(rdev, mddev) {
struct gendisk *disk = rdev->bdev->bd_disk;
curr_events = (int)part_stat_read_accum(&disk->part0, sectors) -
curr_events = (int)part_stat_read_accum(disk->part0, sectors) -
atomic_read(&disk->sync_io);
/* sync IO will cause sync_io to increase before the disk_stats
* as sync_io is counted when a request starts, and
@ -9015,10 +9011,9 @@ void md_do_sync(struct md_thread *thread)
mddev_lock_nointr(mddev);
md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));
mddev_unlock(mddev);
if (!mddev_is_clustered(mddev)) {
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
}
if (!mddev_is_clustered(mddev))
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
}
spin_lock(&mddev->lock);
@ -9547,18 +9542,15 @@ static int __init md_init(void)
if (!md_rdev_misc_wq)
goto err_rdev_misc_wq;
if ((ret = register_blkdev(MD_MAJOR, "md")) < 0)
ret = __register_blkdev(MD_MAJOR, "md", md_probe);
if (ret < 0)
goto err_md;
if ((ret = register_blkdev(0, "mdp")) < 0)
ret = __register_blkdev(0, "mdp", md_probe);
if (ret < 0)
goto err_mdp;
mdp_major = ret;
blk_register_region(MKDEV(MD_MAJOR, 0), 512, THIS_MODULE,
md_probe, NULL, NULL);
blk_register_region(MKDEV(mdp_major, 0), 1UL<<MINORBITS, THIS_MODULE,
md_probe, NULL, NULL);
register_reboot_notifier(&md_notifier);
raid_table_header = register_sysctl_table(raid_root_table);
@ -9825,9 +9817,6 @@ static __exit void md_exit(void)
struct list_head *tmp;
int delay = 1;
blk_unregister_region(MKDEV(MD_MAJOR,0), 512);
blk_unregister_region(MKDEV(mdp_major,0), 1U << MINORBITS);
unregister_blkdev(MD_MAJOR,"md");
unregister_blkdev(mdp_major, "mdp");
unregister_reboot_notifier(&md_notifier);

8
drivers/md/raid0.c
View File

@ -508,8 +508,8 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio)
bio_chain(discard_bio, bio);
bio_clone_blkg_association(discard_bio, bio);
if (mddev->gendisk)
trace_block_bio_remap(bdev_get_queue(rdev->bdev),
discard_bio, disk_devt(mddev->gendisk),
trace_block_bio_remap(discard_bio,
disk_devt(mddev->gendisk),
bio->bi_iter.bi_sector);
submit_bio_noacct(discard_bio);
}
@ -581,8 +581,8 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
tmp_dev->data_offset;
if (mddev->gendisk)
trace_block_bio_remap(bio->bi_disk->queue, bio,
disk_devt(mddev->gendisk), bio_sector);
trace_block_bio_remap(bio, disk_devt(mddev->gendisk),
bio_sector);
mddev_check_writesame(mddev, bio);
mddev_check_write_zeroes(mddev, bio);
submit_bio_noacct(bio);

7
drivers/md/raid1.c
View File

@ -1305,8 +1305,8 @@ static void raid1_read_request(struct mddev *mddev, struct bio *bio,
read_bio->bi_private = r1_bio;
if (mddev->gendisk)
trace_block_bio_remap(read_bio->bi_disk->queue, read_bio,
disk_devt(mddev->gendisk), r1_bio->sector);
trace_block_bio_remap(read_bio, disk_devt(mddev->gendisk),
r1_bio->sector);
submit_bio_noacct(read_bio);
}
@ -1517,8 +1517,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
atomic_inc(&r1_bio->remaining);
if (mddev->gendisk)
trace_block_bio_remap(mbio->bi_disk->queue,
mbio, disk_devt(mddev->gendisk),
trace_block_bio_remap(mbio, disk_devt(mddev->gendisk),
r1_bio->sector);
/* flush_pending_writes() needs access to the rdev so...*/
mbio->bi_disk = (void *)conf->mirrors[i].rdev;

6
drivers/md/raid10.c
View File

@ -1201,8 +1201,7 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
read_bio->bi_private = r10_bio;
if (mddev->gendisk)
trace_block_bio_remap(read_bio->bi_disk->queue,
read_bio, disk_devt(mddev->gendisk),
trace_block_bio_remap(read_bio, disk_devt(mddev->gendisk),
r10_bio->sector);
submit_bio_noacct(read_bio);
return;
@ -1251,8 +1250,7 @@ static void raid10_write_one_disk(struct mddev *mddev, struct r10bio *r10_bio,
mbio->bi_private = r10_bio;
if (conf->mddev->gendisk)
trace_block_bio_remap(mbio->bi_disk->queue,
mbio, disk_devt(conf->mddev->gendisk),
trace_block_bio_remap(mbio, disk_devt(conf->mddev->gendisk),
r10_bio->sector);
/* flush_pending_writes() needs access to the rdev so...*/
mbio->bi_disk = (void *)rdev;

15
drivers/md/raid5.c
View File

@ -1222,9 +1222,9 @@ again:
set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags);
if (conf->mddev->gendisk)
trace_block_bio_remap(bi->bi_disk->queue,
bi, disk_devt(conf->mddev->gendisk),
sh->dev[i].sector);
trace_block_bio_remap(bi,
disk_devt(conf->mddev->gendisk),
sh->dev[i].sector);
if (should_defer && op_is_write(op))
bio_list_add(&pending_bios, bi);
else
@ -1272,9 +1272,9 @@ again:
if (op == REQ_OP_DISCARD)
rbi->bi_vcnt = 0;
if (conf->mddev->gendisk)
trace_block_bio_remap(rbi->bi_disk->queue,
rbi, disk_devt(conf->mddev->gendisk),
sh->dev[i].sector);
trace_block_bio_remap(rbi,
disk_devt(conf->mddev->gendisk),
sh->dev[i].sector);
if (should_defer && op_is_write(op))
bio_list_add(&pending_bios, rbi);
else
@ -5468,8 +5468,7 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
spin_unlock_irq(&conf->device_lock);
if (mddev->gendisk)
trace_block_bio_remap(align_bi->bi_disk->queue,
align_bi, disk_devt(mddev->gendisk),
trace_block_bio_remap(align_bi, disk_devt(mddev->gendisk),
raid_bio->bi_iter.bi_sector);
submit_bio_noacct(align_bi);
return 1;

28
drivers/mtd/mtd_blkdevs.c
View File

@ -298,38 +298,10 @@ unlock:
return ret;
}
static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct mtd_blktrans_dev *dev = blktrans_dev_get(bdev->bd_disk);
int ret = -ENXIO;
if (!dev)
return ret;
mutex_lock(&dev->lock);
if (!dev->mtd)
goto unlock;
switch (cmd) {
case BLKFLSBUF:
ret = dev->tr->flush ? dev->tr->flush(dev) : 0;
break;
default:
ret = -ENOTTY;
}
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
return ret;
}
static const struct block_device_operations mtd_block_ops = {
.owner = THIS_MODULE,
.open = blktrans_open,
.release = blktrans_release,
.ioctl = blktrans_ioctl,
.getgeo = blktrans_getgeo,
};

17
drivers/mtd/mtdsuper.c
View File

@ -120,8 +120,8 @@ int get_tree_mtd(struct fs_context *fc,
struct fs_context *fc))
{
#ifdef CONFIG_BLOCK
struct block_device *bdev;
int ret, major;
dev_t dev;
int ret;
#endif
int mtdnr;
@ -169,20 +169,15 @@ int get_tree_mtd(struct fs_context *fc,
/* try the old way - the hack where we allowed users to mount
* /dev/mtdblock$(n) but didn't actually _use_ the blockdev
*/
bdev = lookup_bdev(fc->source);
if (IS_ERR(bdev)) {
ret = PTR_ERR(bdev);
ret = lookup_bdev(fc->source, &dev);
if (ret) {
errorf(fc, "MTD: Couldn't look up '%s': %d", fc->source, ret);
return ret;
}
pr_debug("MTDSB: lookup_bdev() returned 0\n");
major = MAJOR(bdev->bd_dev);
mtdnr = MINOR(bdev->bd_dev);
bdput(bdev);
if (major == MTD_BLOCK_MAJOR)
return mtd_get_sb_by_nr(fc, mtdnr, fill_super);
if (MAJOR(dev) == MTD_BLOCK_MAJOR)
return mtd_get_sb_by_nr(fc, MINOR(dev), fill_super);
#endif /* CONFIG_BLOCK */

18
drivers/nvme/host/core.c
View File

@ -93,16 +93,6 @@ static void nvme_put_subsystem(struct nvme_subsystem *subsys);
static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl,
unsigned nsid);
static void nvme_update_bdev_size(struct gendisk *disk)
{
struct block_device *bdev = bdget_disk(disk, 0);
if (bdev) {
bd_set_nr_sectors(bdev, get_capacity(disk));
bdput(bdev);
}
}
/*
* Prepare a queue for teardown.
*
@ -119,8 +109,7 @@ static void nvme_set_queue_dying(struct nvme_ns *ns)
blk_set_queue_dying(ns->queue);
blk_mq_unquiesce_queue(ns->queue);
set_capacity(ns->disk, 0);
nvme_update_bdev_size(ns->disk);
set_capacity_and_notify(ns->disk, 0);
}
static void nvme_queue_scan(struct nvme_ctrl *ctrl)
@ -2053,7 +2042,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
capacity = 0;
}
set_capacity_revalidate_and_notify(disk, capacity, false);
set_capacity_and_notify(disk, capacity);
nvme_config_discard(disk, ns);
nvme_config_write_zeroes(disk, ns);
@ -2134,7 +2123,6 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_id_ns *id)
blk_stack_limits(&ns->head->disk->queue->limits,
&ns->queue->limits, 0);
blk_queue_update_readahead(ns->head->disk->queue);
nvme_update_bdev_size(ns->head->disk);
blk_mq_unfreeze_queue(ns->head->disk->queue);
}
#endif
@ -3962,8 +3950,6 @@ out:
*/
if (ret && ret != -ENOMEM && !(ret > 0 && !(ret & NVME_SC_DNR)))
nvme_ns_remove(ns);
else
revalidate_disk_size(ns->disk, true);
}
static void nvme_validate_or_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)

3
drivers/nvme/host/multipath.c
View File

@ -312,8 +312,7 @@ blk_qc_t nvme_ns_head_submit_bio(struct bio *bio)
if (likely(ns)) {
bio->bi_disk = ns->disk;
bio->bi_opf |= REQ_NVME_MPATH;
trace_block_bio_remap(bio->bi_disk->queue, bio,
disk_devt(ns->head->disk),
trace_block_bio_remap(bio, disk_devt(ns->head->disk),
bio->bi_iter.bi_sector);
ret = submit_bio_noacct(bio);
} else if (nvme_available_path(head)) {

20
drivers/nvme/target/admin-cmd.c
View File

@ -89,12 +89,12 @@ static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req,
if (!ns->bdev)
goto out;
host_reads = part_stat_read(ns->bdev->bd_part, ios[READ]);
data_units_read = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part,
sectors[READ]), 1000);
host_writes = part_stat_read(ns->bdev->bd_part, ios[WRITE]);
data_units_written = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part,
sectors[WRITE]), 1000);
host_reads = part_stat_read(ns->bdev, ios[READ]);
data_units_read =
DIV_ROUND_UP(part_stat_read(ns->bdev, sectors[READ]), 1000);
host_writes = part_stat_read(ns->bdev, ios[WRITE]);
data_units_written =
DIV_ROUND_UP(part_stat_read(ns->bdev, sectors[WRITE]), 1000);
put_unaligned_le64(host_reads, &slog->host_reads[0]);
put_unaligned_le64(data_units_read, &slog->data_units_read[0]);
@ -120,12 +120,12 @@ static u16 nvmet_get_smart_log_all(struct nvmet_req *req,
/* we don't have the right data for file backed ns */
if (!ns->bdev)
continue;
host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]);
host_reads += part_stat_read(ns->bdev, ios[READ]);
data_units_read += DIV_ROUND_UP(
part_stat_read(ns->bdev->bd_part, sectors[READ]), 1000);
host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]);
part_stat_read(ns->bdev, sectors[READ]), 1000);
host_writes += part_stat_read(ns->bdev, ios[WRITE]);
data_units_written += DIV_ROUND_UP(
part_stat_read(ns->bdev->bd_part, sectors[WRITE]), 1000);
part_stat_read(ns->bdev, sectors[WRITE]), 1000);
}
put_unaligned_le64(host_reads, &slog->host_reads[0]);

10
drivers/nvme/target/loop.c
View File

@ -211,6 +211,8 @@ static int nvme_loop_init_request(struct blk_mq_tag_set *set,
(set == &ctrl->tag_set) ? hctx_idx + 1 : 0);
}
static struct lock_class_key loop_hctx_fq_lock_key;
static int nvme_loop_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
unsigned int hctx_idx)
{
@ -219,6 +221,14 @@ static int nvme_loop_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
BUG_ON(hctx_idx >= ctrl->ctrl.queue_count);
/*
* flush_end_io() can be called recursively for us, so use our own
* lock class key for avoiding lockdep possible recursive locking,
* then we can remove the dynamically allocated lock class for each
* flush queue, that way may cause horrible boot delay.
*/
blk_mq_hctx_set_fq_lock_class(hctx, &loop_hctx_fq_lock_key);
hctx->driver_data = queue;
return 0;
}

9
drivers/s390/block/dasd.c
View File

@ -430,7 +430,7 @@ dasd_state_ready_to_online(struct dasd_device * device)
{
struct gendisk *disk;
struct disk_part_iter piter;
struct hd_struct *part;
struct block_device *part;
device->state = DASD_STATE_ONLINE;
if (device->block) {
@ -443,7 +443,7 @@ dasd_state_ready_to_online(struct dasd_device * device)
disk = device->block->bdev->bd_disk;
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
while ((part = disk_part_iter_next(&piter)))
kobject_uevent(&part_to_dev(part)->kobj, KOBJ_CHANGE);
kobject_uevent(bdev_kobj(part), KOBJ_CHANGE);
disk_part_iter_exit(&piter);
}
return 0;
@ -457,7 +457,7 @@ static int dasd_state_online_to_ready(struct dasd_device *device)
int rc;
struct gendisk *disk;
struct disk_part_iter piter;
struct hd_struct *part;
struct block_device *part;
if (device->discipline->online_to_ready) {
rc = device->discipline->online_to_ready(device);
@ -470,7 +470,7 @@ static int dasd_state_online_to_ready(struct dasd_device *device)
disk = device->block->bdev->bd_disk;
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
while ((part = disk_part_iter_next(&piter)))
kobject_uevent(&part_to_dev(part)->kobj, KOBJ_CHANGE);
kobject_uevent(bdev_kobj(part), KOBJ_CHANGE);
disk_part_iter_exit(&piter);
}
return 0;
@ -3376,6 +3376,7 @@ dasd_device_operations = {
.ioctl = dasd_ioctl,
.compat_ioctl = dasd_ioctl,
.getgeo = dasd_getgeo,
.set_read_only = dasd_set_read_only,
};
/*******************************************************************************

3
drivers/s390/block/dasd_int.h
View File

@ -834,7 +834,8 @@ int dasd_scan_partitions(struct dasd_block *);
void dasd_destroy_partitions(struct dasd_block *);
/* externals in dasd_ioctl.c */
int dasd_ioctl(struct block_device *, fmode_t, unsigned int, unsigned long);
int dasd_ioctl(struct block_device *, fmode_t, unsigned int, unsigned long);
int dasd_set_read_only(struct block_device *bdev, bool ro);
/* externals in dasd_proc.c */
int dasd_proc_init(void);

36
drivers/s390/block/dasd_ioctl.c
View File

@ -54,8 +54,6 @@ dasd_ioctl_enable(struct block_device *bdev)
return -ENODEV;
dasd_enable_device(base);
/* Formatting the dasd device can change the capacity. */
bd_set_nr_sectors(bdev, get_capacity(base->block->gdp));
dasd_put_device(base);
return 0;
}
@ -88,7 +86,7 @@ dasd_ioctl_disable(struct block_device *bdev)
* Set i_size to zero, since read, write, etc. check against this
* value.
*/
bd_set_nr_sectors(bdev, 0);
set_capacity(bdev->bd_disk, 0);
dasd_put_device(base);
return 0;
}
@ -222,9 +220,8 @@ dasd_format(struct dasd_block *block, struct format_data_t *fdata)
* enabling the device later.
*/
if (fdata->start_unit == 0) {
struct block_device *bdev = bdget_disk(block->gdp, 0);
bdev->bd_inode->i_blkbits = blksize_bits(fdata->blksize);
bdput(bdev);
block->gdp->part0->bd_inode->i_blkbits =
blksize_bits(fdata->blksize);
}
rc = base->discipline->format_device(base, fdata, 1);
@ -532,28 +529,22 @@ static int dasd_ioctl_information(struct dasd_block *block, void __user *argp,
/*
* Set read only
*/
static int
dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
int dasd_set_read_only(struct block_device *bdev, bool ro)
{
struct dasd_device *base;
int intval, rc;
int rc;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
/* do not manipulate hardware state for partitions */
if (bdev_is_partition(bdev))
// ro setting is not allowed for partitions
return -EINVAL;
if (get_user(intval, (int __user *)argp))
return -EFAULT;
return 0;
base = dasd_device_from_gendisk(bdev->bd_disk);
if (!base)
return -ENODEV;
if (!intval && test_bit(DASD_FLAG_DEVICE_RO, &base->flags)) {
dasd_put_device(base);
return -EROFS;
}
set_disk_ro(bdev->bd_disk, intval);
rc = dasd_set_feature(base->cdev, DASD_FEATURE_READONLY, intval);
if (!ro && test_bit(DASD_FLAG_DEVICE_RO, &base->flags))
rc = -EROFS;
else
rc = dasd_set_feature(base->cdev, DASD_FEATURE_READONLY, ro);
dasd_put_device(base);
return rc;
}
@ -633,9 +624,6 @@ int dasd_ioctl(struct block_device *bdev, fmode_t mode,
case BIODASDPRRST:
rc = dasd_ioctl_reset_profile(block);
break;
case BLKROSET:
rc = dasd_ioctl_set_ro(bdev, argp);
break;
case DASDAPIVER:
rc = dasd_ioctl_api_version(argp);
break;

3
drivers/s390/scsi/zfcp_fsf.c
View File

@ -2359,8 +2359,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
}
}
blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
sizeof(blktrc));
blk_add_driver_data(scsi->request, &blktrc, sizeof(blktrc));
}
/**

2
drivers/scsi/scsicam.c
View File

@ -32,7 +32,7 @@
*/
unsigned char *scsi_bios_ptable(struct block_device *dev)
{
struct address_space *mapping = dev->bd_contains->bd_inode->i_mapping;
struct address_space *mapping = bdev_whole(dev)->bd_inode->i_mapping;
unsigned char *res = NULL;
struct page *page;

28
drivers/scsi/sd.c
View File

@ -630,13 +630,11 @@ static struct scsi_driver sd_template = {
};
/*
* Dummy kobj_map->probe function.
* The default ->probe function will call modprobe, which is
* pointless as this module is already loaded.
* Don't request a new module, as that could deadlock in multipath
* environment.
*/
static struct kobject *sd_default_probe(dev_t devt, int *partno, void *data)
static void sd_default_probe(dev_t devt)
{
return NULL;
}
/*
@ -1750,10 +1748,8 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
static void sd_rescan(struct device *dev)
{
struct scsi_disk *sdkp = dev_get_drvdata(dev);
int ret;
ret = sd_revalidate_disk(sdkp->disk);
revalidate_disk_size(sdkp->disk, ret == 0);
sd_revalidate_disk(sdkp->disk);
}
static int sd_ioctl(struct block_device *bdev, fmode_t mode,
@ -3265,8 +3261,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
sdkp->first_scan = 0;
set_capacity_revalidate_and_notify(disk,
logical_to_sectors(sdp, sdkp->capacity), false);
set_capacity_and_notify(disk, logical_to_sectors(sdp, sdkp->capacity));
sd_config_write_same(sdkp);
kfree(buffer);
@ -3276,7 +3271,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
* capacity to 0.
*/
if (sd_zbc_revalidate_zones(sdkp))
set_capacity_revalidate_and_notify(disk, 0, false);
set_capacity_and_notify(disk, 0);
out:
return 0;
@ -3528,9 +3523,6 @@ static int sd_remove(struct device *dev)
free_opal_dev(sdkp->opal_dev);
blk_register_region(devt, SD_MINORS, NULL,
sd_default_probe, NULL, NULL);
mutex_lock(&sd_ref_mutex);
dev_set_drvdata(dev, NULL);
put_device(&sdkp->dev);
@ -3720,11 +3712,9 @@ static int __init init_sd(void)
SCSI_LOG_HLQUEUE(3, printk("init_sd: sd driver entry point\n"));
for (i = 0; i < SD_MAJORS; i++) {
if (register_blkdev(sd_major(i), "sd") != 0)
if (__register_blkdev(sd_major(i), "sd", sd_default_probe))
continue;
majors++;
blk_register_region(sd_major(i), SD_MINORS, NULL,
sd_default_probe, NULL, NULL);
}
if (!majors)
@ -3797,10 +3787,8 @@ static void __exit exit_sd(void)
class_unregister(&sd_disk_class);
for (i = 0; i < SD_MAJORS; i++) {
blk_unregister_region(sd_major(i), SD_MINORS);
for (i = 0; i < SD_MAJORS; i++)
unregister_blkdev(sd_major(i), "sd");
}
}
module_init(init_sd);

6
drivers/target/target_core_file.c
View File

@ -133,10 +133,10 @@ static int fd_configure_device(struct se_device *dev)
*/
inode = file->f_mapping->host;
if (S_ISBLK(inode->i_mode)) {
struct request_queue *q = bdev_get_queue(inode->i_bdev);
struct request_queue *q = bdev_get_queue(I_BDEV(inode));
unsigned long long dev_size;
fd_dev->fd_block_size = bdev_logical_block_size(inode->i_bdev);
fd_dev->fd_block_size = bdev_logical_block_size(I_BDEV(inode));
/*
* Determine the number of bytes from i_size_read() minus
* one (1) logical sector from underlying struct block_device
@ -559,7 +559,7 @@ fd_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb)
if (S_ISBLK(inode->i_mode)) {
/* The backend is block device, use discard */
struct block_device *bdev = inode->i_bdev;
struct block_device *bdev = I_BDEV(inode);
struct se_device *dev = cmd->se_dev;
ret = blkdev_issue_discard(bdev,

5
drivers/target/target_core_pscsi.c
View File

@ -1029,9 +1029,8 @@ static sector_t pscsi_get_blocks(struct se_device *dev)
{
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
if (pdv->pdv_bd && pdv->pdv_bd->bd_part)
return pdv->pdv_bd->bd_part->nr_sects;
if (pdv->pdv_bd)
return bdev_nr_sectors(pdv->pdv_bd);
return 0;
}

8
drivers/usb/gadget/function/storage_common.c
View File

@ -204,7 +204,7 @@ int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
if (!(filp->f_mode & FMODE_WRITE))
ro = 1;
inode = file_inode(filp);
inode = filp->f_mapping->host;
if ((!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))) {
LINFO(curlun, "invalid file type: %s\n", filename);
goto out;
@ -221,7 +221,7 @@ int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
if (!(filp->f_mode & FMODE_CAN_WRITE))
ro = 1;
size = i_size_read(inode->i_mapping->host);
size = i_size_read(inode);
if (size < 0) {
LINFO(curlun, "unable to find file size: %s\n", filename);
rc = (int) size;
@ -231,8 +231,8 @@ int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
if (curlun->cdrom) {
blksize = 2048;
blkbits = 11;
} else if (inode->i_bdev) {
blksize = bdev_logical_block_size(inode->i_bdev);
} else if (S_ISBLK(inode->i_mode)) {
blksize = bdev_logical_block_size(I_BDEV(inode));
blkbits = blksize_bits(blksize);
} else {
blksize = 512;

799
fs/block_dev.c
View File

File diff suppressed because it is too large Load Diff

15
fs/btrfs/sysfs.c
View File

@ -1343,8 +1343,6 @@ int btrfs_sysfs_add_space_info_type(struct btrfs_fs_info *fs_info,
void btrfs_sysfs_remove_device(struct btrfs_device *device)
{
struct hd_struct *disk;
struct kobject *disk_kobj;
struct kobject *devices_kobj;
/*
@ -1354,11 +1352,8 @@ void btrfs_sysfs_remove_device(struct btrfs_device *device)
devices_kobj = device->fs_info->fs_devices->devices_kobj;
ASSERT(devices_kobj);
if (device->bdev) {
disk = device->bdev->bd_part;
disk_kobj = &part_to_dev(disk)->kobj;
sysfs_remove_link(devices_kobj, disk_kobj->name);
}
if (device->bdev)
sysfs_remove_link(devices_kobj, bdev_kobj(device->bdev)->name);
if (device->devid_kobj.state_initialized) {
kobject_del(&device->devid_kobj);
@ -1464,11 +1459,7 @@ int btrfs_sysfs_add_device(struct btrfs_device *device)
nofs_flag = memalloc_nofs_save();
if (device->bdev) {
struct hd_struct *disk;
struct kobject *disk_kobj;
disk = device->bdev->bd_part;
disk_kobj = &part_to_dev(disk)->kobj;
struct kobject *disk_kobj = bdev_kobj(device->bdev);
ret = sysfs_create_link(devices_kobj, disk_kobj, disk_kobj->name);
if (ret) {

13
fs/btrfs/volumes.c
View File

@ -935,16 +935,16 @@ static noinline struct btrfs_device *device_list_add(const char *path,
* make sure it's the same device if the device is mounted
*/
if (device->bdev) {
struct block_device *path_bdev;
int error;
dev_t path_dev;
path_bdev = lookup_bdev(path);
if (IS_ERR(path_bdev)) {
error = lookup_bdev(path, &path_dev);
if (error) {
mutex_unlock(&fs_devices->device_list_mutex);
return ERR_CAST(path_bdev);
return ERR_PTR(error);
}
if (device->bdev != path_bdev) {
bdput(path_bdev);
if (device->bdev->bd_dev != path_dev) {
mutex_unlock(&fs_devices->device_list_mutex);
/*
* device->fs_info may not be reliable here, so
@ -959,7 +959,6 @@ static noinline struct btrfs_device *device_list_add(const char *path,
task_pid_nr(current));
return ERR_PTR(-EEXIST);
}
bdput(path_bdev);
btrfs_info_in_rcu(device->fs_info,
"devid %llu device path %s changed to %s scanned by %s (%d)",
devid, rcu_str_deref(device->name),

6
fs/btrfs/zoned.c
View File

@ -165,7 +165,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device)
if (!zone_info)
return -ENOMEM;
nr_sectors = bdev->bd_part->nr_sects;
nr_sectors = bdev_nr_sectors(bdev);
zone_sectors = bdev_zone_sectors(bdev);
/* Check if it's power of 2 (see is_power_of_2) */
ASSERT(zone_sectors != 0 && (zone_sectors & (zone_sectors - 1)) == 0);
@ -505,7 +505,7 @@ int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
return -EINVAL;
zone_size = zone_sectors << SECTOR_SHIFT;
zone_sectors_shift = ilog2(zone_sectors);
nr_sectors = bdev->bd_part->nr_sects;
nr_sectors = bdev_nr_sectors(bdev);
nr_zones = nr_sectors >> zone_sectors_shift;
sb_zone = sb_zone_number(zone_sectors_shift + SECTOR_SHIFT, mirror);
@ -603,7 +603,7 @@ int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
zone_sectors = bdev_zone_sectors(bdev);
zone_sectors_shift = ilog2(zone_sectors);
nr_sectors = bdev->bd_part->nr_sects;
nr_sectors = bdev_nr_sectors(bdev);
nr_zones = nr_sectors >> zone_sectors_shift;
sb_zone = sb_zone_number(zone_sectors_shift + SECTOR_SHIFT, mirror);

2
fs/buffer.c
View File

@ -523,7 +523,7 @@ repeat:
void emergency_thaw_bdev(struct super_block *sb)
{
while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb))
while (sb->s_bdev && !thaw_bdev(sb->s_bdev))
printk(KERN_WARNING "Emergency Thaw on %pg\n", sb->s_bdev);
}

2
fs/ext4/ioctl.c
View File

@ -624,7 +624,7 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
case EXT4_GOING_FLAGS_DEFAULT:
freeze_bdev(sb->s_bdev);
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
thaw_bdev(sb->s_bdev, sb);
thaw_bdev(sb->s_bdev);
break;
case EXT4_GOING_FLAGS_LOGFLUSH:
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);

18
fs/ext4/super.c
View File

@ -4044,9 +4044,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_sb = sb;
sbi->s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS;
sbi->s_sb_block = sb_block;
if (sb->s_bdev->bd_part)
sbi->s_sectors_written_start =
part_stat_read(sb->s_bdev->bd_part, sectors[STAT_WRITE]);
sbi->s_sectors_written_start =
part_stat_read(sb->s_bdev, sectors[STAT_WRITE]);
/* Cleanup superblock name */
strreplace(sb->s_id, '/', '!');
@ -5505,15 +5504,10 @@ static int ext4_commit_super(struct super_block *sb, int sync)
*/
if (!(sb->s_flags & SB_RDONLY))
ext4_update_tstamp(es, s_wtime);
if (sb->s_bdev->bd_part)
es->s_kbytes_written =
cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
((part_stat_read(sb->s_bdev->bd_part,
sectors[STAT_WRITE]) -
EXT4_SB(sb)->s_sectors_written_start) >> 1));
else
es->s_kbytes_written =
cpu_to_le64(EXT4_SB(sb)->s_kbytes_written);
es->s_kbytes_written =
cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
((part_stat_read(sb->s_bdev, sectors[STAT_WRITE]) -
EXT4_SB(sb)->s_sectors_written_start) >> 1));
if (percpu_counter_initialized(&EXT4_SB(sb)->s_freeclusters_counter))
ext4_free_blocks_count_set(es,
EXT4_C2B(EXT4_SB(sb), percpu_counter_sum_positive(

10
fs/ext4/sysfs.c
View File

@ -62,11 +62,8 @@ static ssize_t session_write_kbytes_show(struct ext4_sb_info *sbi, char *buf)
{
struct super_block *sb = sbi->s_buddy_cache->i_sb;
if (!sb->s_bdev->bd_part)
return snprintf(buf, PAGE_SIZE, "0\n");
return snprintf(buf, PAGE_SIZE, "%lu\n",
(part_stat_read(sb->s_bdev->bd_part,
sectors[STAT_WRITE]) -
(part_stat_read(sb->s_bdev, sectors[STAT_WRITE]) -
sbi->s_sectors_written_start) >> 1);
}
@ -74,12 +71,9 @@ static ssize_t lifetime_write_kbytes_show(struct ext4_sb_info *sbi, char *buf)
{
struct super_block *sb = sbi->s_buddy_cache->i_sb;
if (!sb->s_bdev->bd_part)
return snprintf(buf, PAGE_SIZE, "0\n");
return snprintf(buf, PAGE_SIZE, "%llu\n",
(unsigned long long)(sbi->s_kbytes_written +
((part_stat_read(sb->s_bdev->bd_part,
sectors[STAT_WRITE]) -
((part_stat_read(sb->s_bdev, sectors[STAT_WRITE]) -
EXT4_SB(sb)->s_sectors_written_start) >> 1)));
}

5
fs/f2fs/checkpoint.c
View File

@ -1395,7 +1395,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
__u32 crc32 = 0;
int i;
int cp_payload_blks = __cp_payload(sbi);
struct super_block *sb = sbi->sb;
struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
u64 kbytes_written;
int err;
@ -1489,9 +1488,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
start_blk += data_sum_blocks;
/* Record write statistics in the hot node summary */
kbytes_written = sbi->kbytes_written;
if (sb->s_bdev->bd_part)
kbytes_written += BD_PART_WRITTEN(sbi);
kbytes_written = sbi->kbytes_written + BD_PART_WRITTEN(sbi);
seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);

2
fs/f2fs/f2fs.h
View File

@ -1675,7 +1675,7 @@ static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
* and the return value is in kbytes. s is of struct f2fs_sb_info.
*/
#define BD_PART_WRITTEN(s) \
(((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[STAT_WRITE]) - \
(((u64)part_stat_read((s)->sb->s_bdev, sectors[STAT_WRITE]) - \
(s)->sectors_written_start) >> 1)
static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)

14
fs/f2fs/file.c
View File

@ -2230,16 +2230,12 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
switch (in) {
case F2FS_GOING_DOWN_FULLSYNC:
sb = freeze_bdev(sb->s_bdev);
if (IS_ERR(sb)) {
ret = PTR_ERR(sb);
ret = freeze_bdev(sb->s_bdev);
if (ret)
goto out;
}
if (sb) {
f2fs_stop_checkpoint(sbi, false);
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
thaw_bdev(sb->s_bdev, sb);
}
f2fs_stop_checkpoint(sbi, false);
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
thaw_bdev(sb->s_bdev);
break;
case F2FS_GOING_DOWN_METASYNC:
/* do checkpoint only */

8
fs/f2fs/super.c
View File

@ -3151,7 +3151,7 @@ static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
{
struct block_device *bdev = FDEV(devi).bdev;
sector_t nr_sectors = bdev->bd_part->nr_sects;
sector_t nr_sectors = bdev_nr_sectors(bdev);
struct f2fs_report_zones_args rep_zone_arg;
int ret;
@ -3700,10 +3700,8 @@ try_onemore:
}
/* For write statistics */
if (sb->s_bdev->bd_part)
sbi->sectors_written_start =
(u64)part_stat_read(sb->s_bdev->bd_part,
sectors[STAT_WRITE]);
sbi->sectors_written_start =
(u64)part_stat_read(sb->s_bdev, sectors[STAT_WRITE]);
/* Read accumulated write IO statistics if exists */
seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);

9
fs/f2fs/sysfs.c
View File

@ -90,11 +90,6 @@ static ssize_t free_segments_show(struct f2fs_attr *a,
static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
struct super_block *sb = sbi->sb;
if (!sb->s_bdev->bd_part)
return sprintf(buf, "0\n");
return sprintf(buf, "%llu\n",
(unsigned long long)(sbi->kbytes_written +
BD_PART_WRITTEN(sbi)));
@ -103,12 +98,8 @@ static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
static ssize_t features_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
struct super_block *sb = sbi->sb;
int len = 0;
if (!sb->s_bdev->bd_part)
return sprintf(buf, "0\n");
if (f2fs_sb_has_encrypt(sbi))
len += scnprintf(buf, PAGE_SIZE - len, "%s",
"encryption");

3
fs/inode.c
View File

@ -155,7 +155,6 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
inode->i_bytes = 0;
inode->i_generation = 0;
inode->i_pipe = NULL;
inode->i_bdev = NULL;
inode->i_cdev = NULL;
inode->i_link = NULL;
inode->i_dir_seq = 0;
@ -580,8 +579,6 @@ static void evict(struct inode *inode)
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
}
if (S_ISBLK(inode->i_mode) && inode->i_bdev)
bd_forget(inode);
if (S_ISCHR(inode->i_mode) && inode->i_cdev)
cd_forget(inode);

7
fs/internal.h
View File

@ -25,7 +25,6 @@ extern void __init bdev_cache_init(void);
extern int __sync_blockdev(struct block_device *bdev, int wait);
void iterate_bdevs(void (*)(struct block_device *, void *), void *);
void emergency_thaw_bdev(struct super_block *sb);
void bd_forget(struct inode *inode);
#else
static inline void bdev_cache_init(void)
{
@ -43,9 +42,6 @@ static inline int emergency_thaw_bdev(struct super_block *sb)
{
return 0;
}
static inline void bd_forget(struct inode *inode)
{
}
#endif /* CONFIG_BLOCK */
/*
@ -116,7 +112,8 @@ extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
*/
extern int reconfigure_super(struct fs_context *);
extern bool trylock_super(struct super_block *sb);
extern struct super_block *user_get_super(dev_t);
struct super_block *user_get_super(dev_t, bool excl);
void put_super(struct super_block *sb);
extern bool mount_capable(struct fs_context *);
/*

10
fs/io_uring.c
View File

@ -2802,11 +2802,7 @@ static struct file *__io_file_get(struct io_submit_state *state, int fd)
static bool io_bdev_nowait(struct block_device *bdev)
{
#ifdef CONFIG_BLOCK
return !bdev || blk_queue_nowait(bdev_get_queue(bdev));
#else
return true;
#endif
}
/*
@ -2819,14 +2815,16 @@ static bool io_file_supports_async(struct file *file, int rw)
umode_t mode = file_inode(file)->i_mode;
if (S_ISBLK(mode)) {
if (io_bdev_nowait(file->f_inode->i_bdev))
if (IS_ENABLED(CONFIG_BLOCK) &&
io_bdev_nowait(I_BDEV(file->f_mapping->host)))
return true;
return false;
}
if (S_ISCHR(mode) || S_ISSOCK(mode))
return true;
if (S_ISREG(mode)) {
if (io_bdev_nowait(file->f_inode->i_sb->s_bdev) &&
if (IS_ENABLED(CONFIG_BLOCK) &&
io_bdev_nowait(file->f_inode->i_sb->s_bdev) &&
file->f_op != &io_uring_fops)
return true;
return false;

5
fs/pipe.c
View File

@ -1342,9 +1342,8 @@ out_revert_acct:
}
/*
* After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same
* location, so checking ->i_pipe is not enough to verify that this is a
* pipe.
* Note that i_pipe and i_cdev share the same location, so checking ->i_pipe is
* not enough to verify that this is a pipe.
*/
struct pipe_inode_info *get_pipe_info(struct file *file, bool for_splice)
{

2
fs/pstore/blk.c
View File

@ -244,7 +244,7 @@ static struct block_device *psblk_get_bdev(void *holder,
return bdev;
}
nr_sects = part_nr_sects_read(bdev->bd_part);
nr_sects = bdev_nr_sectors(bdev);
if (!nr_sects) {
pr_err("not enough space for '%s'\n", blkdev);
blkdev_put(bdev, mode);

40
fs/quota/quota.c
View File

@ -20,6 +20,7 @@
#include <linux/writeback.h>
#include <linux/nospec.h>
#include "compat.h"
#include "../internal.h"
static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
qid_t id)
@ -865,27 +866,42 @@ static bool quotactl_cmd_onoff(int cmd)
static struct super_block *quotactl_block(const char __user *special, int cmd)
{
#ifdef CONFIG_BLOCK
struct block_device *bdev;
struct super_block *sb;
struct filename *tmp = getname(special);
bool excl = false, thawed = false;
int error;
dev_t dev;
if (IS_ERR(tmp))
return ERR_CAST(tmp);
bdev = lookup_bdev(tmp->name);
error = lookup_bdev(tmp->name, &dev);
putname(tmp);
if (IS_ERR(bdev))
return ERR_CAST(bdev);
if (quotactl_cmd_onoff(cmd))
sb = get_super_exclusive_thawed(bdev);
else if (quotactl_cmd_write(cmd))
sb = get_super_thawed(bdev);
else
sb = get_super(bdev);
bdput(bdev);
if (error)
return ERR_PTR(error);
if (quotactl_cmd_onoff(cmd)) {
excl = true;
thawed = true;
} else if (quotactl_cmd_write(cmd)) {
thawed = true;
}
retry:
sb = user_get_super(dev, excl);
if (!sb)
return ERR_PTR(-ENODEV);
if (thawed && sb->s_writers.frozen != SB_UNFROZEN) {
if (excl)
up_write(&sb->s_umount);
else
up_read(&sb->s_umount);
wait_event(sb->s_writers.wait_unfrozen,
sb->s_writers.frozen == SB_UNFROZEN);
put_super(sb);
goto retry;
}
return sb;
#else
return ERR_PTR(-ENODEV);
#endif

2
fs/statfs.c
View File

@ -235,7 +235,7 @@ SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, size_t, sz, struct statfs64 __user
static int vfs_ustat(dev_t dev, struct kstatfs *sbuf)
{
struct super_block *s = user_get_super(dev);
struct super_block *s = user_get_super(dev, false);
int err;
if (!s)
return -EINVAL;

93
fs/super.c
View File

@ -307,7 +307,7 @@ static void __put_super(struct super_block *s)
* Drops a temporary reference, frees superblock if there's no
* references left.
*/
static void put_super(struct super_block *sb)
void put_super(struct super_block *sb)
{
spin_lock(&sb_lock);
__put_super(sb);
@ -740,7 +740,14 @@ void iterate_supers_type(struct file_system_type *type,
EXPORT_SYMBOL(iterate_supers_type);
static struct super_block *__get_super(struct block_device *bdev, bool excl)
/**
* get_super - get the superblock of a device
* @bdev: device to get the superblock for
*
* Scans the superblock list and finds the superblock of the file system
* mounted on the device given. %NULL is returned if no match is found.
*/
struct super_block *get_super(struct block_device *bdev)
{
struct super_block *sb;
@ -755,17 +762,11 @@ rescan:
if (sb->s_bdev == bdev) {
sb->s_count++;
spin_unlock(&sb_lock);
if (!excl)
down_read(&sb->s_umount);
else
down_write(&sb->s_umount);
down_read(&sb->s_umount);
/* still alive? */
if (sb->s_root && (sb->s_flags & SB_BORN))
return sb;
if (!excl)
up_read(&sb->s_umount);
else
up_write(&sb->s_umount);
up_read(&sb->s_umount);
/* nope, got unmounted */
spin_lock(&sb_lock);
__put_super(sb);
@ -776,66 +777,6 @@ rescan:
return NULL;
}
/**
* get_super - get the superblock of a device
* @bdev: device to get the superblock for
*
* Scans the superblock list and finds the superblock of the file system
* mounted on the device given. %NULL is returned if no match is found.
*/
struct super_block *get_super(struct block_device *bdev)
{
return __get_super(bdev, false);
}
EXPORT_SYMBOL(get_super);
static struct super_block *__get_super_thawed(struct block_device *bdev,
bool excl)
{
while (1) {
struct super_block *s = __get_super(bdev, excl);
if (!s || s->s_writers.frozen == SB_UNFROZEN)
return s;
if (!excl)
up_read(&s->s_umount);
else
up_write(&s->s_umount);
wait_event(s->s_writers.wait_unfrozen,
s->s_writers.frozen == SB_UNFROZEN);
put_super(s);
}
}
/**
* get_super_thawed - get thawed superblock of a device
* @bdev: device to get the superblock for
*
* Scans the superblock list and finds the superblock of the file system
* mounted on the device. The superblock is returned once it is thawed
* (or immediately if it was not frozen). %NULL is returned if no match
* is found.
*/
struct super_block *get_super_thawed(struct block_device *bdev)
{
return __get_super_thawed(bdev, false);
}
EXPORT_SYMBOL(get_super_thawed);
/**
* get_super_exclusive_thawed - get thawed superblock of a device
* @bdev: device to get the superblock for
*
* Scans the superblock list and finds the superblock of the file system
* mounted on the device. The superblock is returned once it is thawed
* (or immediately if it was not frozen) and s_umount semaphore is held
* in exclusive mode. %NULL is returned if no match is found.
*/
struct super_block *get_super_exclusive_thawed(struct block_device *bdev)
{
return __get_super_thawed(bdev, true);
}
EXPORT_SYMBOL(get_super_exclusive_thawed);
/**
* get_active_super - get an active reference to the superblock of a device
* @bdev: device to get the superblock for
@ -867,7 +808,7 @@ restart:
return NULL;
}
struct super_block *user_get_super(dev_t dev)
struct super_block *user_get_super(dev_t dev, bool excl)
{
struct super_block *sb;
@ -879,11 +820,17 @@ rescan:
if (sb->s_dev == dev) {
sb->s_count++;
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
if (excl)
down_write(&sb->s_umount);
else
down_read(&sb->s_umount);
/* still alive? */
if (sb->s_root && (sb->s_flags & SB_BORN))
return sb;
up_read(&sb->s_umount);
if (excl)
up_write(&sb->s_umount);
else
up_read(&sb->s_umount);
/* nope, got unmounted */
spin_lock(&sb_lock);
__put_super(sb);

7
fs/xfs/xfs_fsops.c
View File

@ -433,13 +433,10 @@ xfs_fs_goingdown(
{
switch (inflags) {
case XFS_FSOP_GOING_FLAGS_DEFAULT: {
struct super_block *sb = freeze_bdev(mp->m_super->s_bdev);
if (sb && !IS_ERR(sb)) {
if (!freeze_bdev(mp->m_super->s_bdev)) {
xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
thaw_bdev(sb->s_bdev, sb);
thaw_bdev(mp->m_super->s_bdev);
}
break;
}
case XFS_FSOP_GOING_FLAGS_LOGFLUSH:

23
include/linux/bio.h
View File

@ -148,11 +148,24 @@ static inline void bio_advance_iter(const struct bio *bio,
/* TODO: It is reasonable to complete bio with error here. */
}
/* @bytes should be less or equal to bvec[i->bi_idx].bv_len */
static inline void bio_advance_iter_single(const struct bio *bio,
struct bvec_iter *iter,
unsigned int bytes)
{
iter->bi_sector += bytes >> 9;
if (bio_no_advance_iter(bio))
iter->bi_size -= bytes;
else
bvec_iter_advance_single(bio->bi_io_vec, iter, bytes);
}
#define __bio_for_each_segment(bvl, bio, iter, start) \
for (iter = (start); \
(iter).bi_size && \
((bvl = bio_iter_iovec((bio), (iter))), 1); \
bio_advance_iter((bio), &(iter), (bvl).bv_len))
bio_advance_iter_single((bio), &(iter), (bvl).bv_len))
#define bio_for_each_segment(bvl, bio, iter) \
__bio_for_each_segment(bvl, bio, iter, (bio)->bi_iter)
@ -161,7 +174,7 @@ static inline void bio_advance_iter(const struct bio *bio,
for (iter = (start); \
(iter).bi_size && \
((bvl = mp_bvec_iter_bvec((bio)->bi_io_vec, (iter))), 1); \
bio_advance_iter((bio), &(iter), (bvl).bv_len))
bio_advance_iter_single((bio), &(iter), (bvl).bv_len))
/* iterate over multi-page bvec */
#define bio_for_each_bvec(bvl, bio, iter) \
@ -711,12 +724,6 @@ static inline bool bioset_initialized(struct bio_set *bs)
return bs->bio_slab != NULL;
}
/*
* a small number of entries is fine, not going to be performance critical.
* basically we just need to survive
*/
#define BIO_SPLIT_ENTRIES 2
#if defined(CONFIG_BLK_DEV_INTEGRITY)
#define bip_for_each_vec(bvl, bip, iter) \

4
include/linux/blk-cgroup.h
View File

@ -197,12 +197,12 @@ void blkcg_print_blkgs(struct seq_file *sf, struct blkcg *blkcg,
u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v);
struct blkg_conf_ctx {
struct gendisk *disk;
struct block_device *bdev;
struct blkcg_gq *blkg;
char *body;
};
struct gendisk *blkcg_conf_get_disk(char **inputp);
struct block_device *blkcg_conf_open_bdev(char **inputp);
int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
char *input, struct blkg_conf_ctx *ctx);
void blkg_conf_finish(struct blkg_conf_ctx *ctx);

3
include/linux/blk-mq.h
View File

@ -5,6 +5,7 @@
#include <linux/blkdev.h>
#include <linux/sbitmap.h>
#include <linux/srcu.h>
#include <linux/lockdep.h>
struct blk_mq_tags;
struct blk_flush_queue;
@ -594,5 +595,7 @@ static inline void blk_mq_cleanup_rq(struct request *rq)
}
blk_qc_t blk_mq_submit_bio(struct bio *bio);
void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx,
struct lock_class_key *key);
#endif

24
include/linux/blk_types.h
View File

@ -8,6 +8,7 @@
#include <linux/types.h>
#include <linux/bvec.h>
#include <linux/device.h>
#include <linux/ktime.h>
struct bio_set;
@ -20,21 +21,25 @@ typedef void (bio_end_io_t) (struct bio *);
struct bio_crypt_ctx;
struct block_device {
sector_t bd_start_sect;
struct disk_stats __percpu *bd_stats;
unsigned long bd_stamp;
bool bd_read_only; /* read-only policy */
dev_t bd_dev;
int bd_openers;
struct inode * bd_inode; /* will die */
struct super_block * bd_super;
struct mutex bd_mutex; /* open/close mutex */
void * bd_claiming;
struct device bd_device;
void * bd_holder;
int bd_holders;
bool bd_write_holder;
#ifdef CONFIG_SYSFS
struct list_head bd_holder_disks;
#endif
struct block_device * bd_contains;
struct kobject *bd_holder_dir;
u8 bd_partno;
struct hd_struct * bd_part;
/* number of times partitions within this device have been opened. */
unsigned bd_part_count;
@ -46,8 +51,23 @@ struct block_device {
int bd_fsfreeze_count;
/* Mutex for freeze */
struct mutex bd_fsfreeze_mutex;
struct super_block *bd_fsfreeze_sb;
struct partition_meta_info *bd_meta_info;
#ifdef CONFIG_FAIL_MAKE_REQUEST
bool bd_make_it_fail;
#endif
} __randomize_layout;
#define bdev_whole(_bdev) \
((_bdev)->bd_disk->part0)
#define dev_to_bdev(device) \
container_of((device), struct block_device, bd_device)
#define bdev_kobj(_bdev) \
(&((_bdev)->bd_device.kobj))
/*
* Block error status values. See block/blk-core:blk_errors for the details.
* Alpha cannot write a byte atomically, so we need to use 32-bit value.

34
include/linux/blkdev.h
View File

@ -191,7 +191,7 @@ struct request {
};
struct gendisk *rq_disk;
struct hd_struct *part;
struct block_device *part;
#ifdef CONFIG_BLK_RQ_ALLOC_TIME
/* Time that the first bio started allocating this request. */
u64 alloc_time_ns;
@ -1491,7 +1491,7 @@ static inline int bdev_alignment_offset(struct block_device *bdev)
return -1;
if (bdev_is_partition(bdev))
return queue_limit_alignment_offset(&q->limits,
bdev->bd_part->start_sect);
bdev->bd_start_sect);
return q->limits.alignment_offset;
}
@ -1532,7 +1532,7 @@ static inline int bdev_discard_alignment(struct block_device *bdev)
if (bdev_is_partition(bdev))
return queue_limit_discard_alignment(&q->limits,
bdev->bd_part->start_sect);
bdev->bd_start_sect);
return q->limits.discard_alignment;
}
@ -1853,6 +1853,7 @@ struct block_device_operations {
void (*unlock_native_capacity) (struct gendisk *);
int (*revalidate_disk) (struct gendisk *);
int (*getgeo)(struct block_device *, struct hd_geometry *);
int (*set_read_only)(struct block_device *bdev, bool ro);
/* this callback is with swap_lock and sometimes page table lock held */
void (*swap_slot_free_notify) (struct block_device *, unsigned long);
int (*report_zones)(struct gendisk *, sector_t sector,
@ -1869,8 +1870,6 @@ extern int blkdev_compat_ptr_ioctl(struct block_device *, fmode_t,
#define blkdev_compat_ptr_ioctl NULL
#endif
extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,
unsigned long);
extern int bdev_read_page(struct block_device *, sector_t, struct page *);
extern int bdev_write_page(struct block_device *, sector_t, struct page *,
struct writeback_control *);
@ -1947,9 +1946,9 @@ unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors,
void disk_end_io_acct(struct gendisk *disk, unsigned int op,
unsigned long start_time);
unsigned long part_start_io_acct(struct gendisk *disk, struct hd_struct **part,
struct bio *bio);
void part_end_io_acct(struct hd_struct *part, struct bio *bio,
unsigned long part_start_io_acct(struct gendisk *disk,
struct block_device **part, struct bio *bio);
void part_end_io_acct(struct block_device *part, struct bio *bio,
unsigned long start_time);
/**
@ -1977,7 +1976,7 @@ int bdev_read_only(struct block_device *bdev);
int set_blocksize(struct block_device *bdev, int size);
const char *bdevname(struct block_device *bdev, char *buffer);
struct block_device *lookup_bdev(const char *);
int lookup_bdev(const char *pathname, dev_t *dev);
void blkdev_show(struct seq_file *seqf, off_t offset);
@ -1992,14 +1991,17 @@ void blkdev_show(struct seq_file *seqf, off_t offset);
struct block_device *blkdev_get_by_path(const char *path, fmode_t mode,
void *holder);
struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder);
int bd_prepare_to_claim(struct block_device *bdev, struct block_device *whole,
void *holder);
void bd_abort_claiming(struct block_device *bdev, struct block_device *whole,
void *holder);
int bd_prepare_to_claim(struct block_device *bdev, void *holder);
void bd_abort_claiming(struct block_device *bdev, void *holder);
void blkdev_put(struct block_device *bdev, fmode_t mode);
/* just for blk-cgroup, don't use elsewhere */
struct block_device *blkdev_get_no_open(dev_t dev);
void blkdev_put_no_open(struct block_device *bdev);
struct block_device *bdev_alloc(struct gendisk *disk, u8 partno);
void bdev_add(struct block_device *bdev, dev_t dev);
struct block_device *I_BDEV(struct inode *inode);
struct block_device *bdget_part(struct hd_struct *part);
struct block_device *bdgrab(struct block_device *bdev);
void bdput(struct block_device *);
@ -2024,7 +2026,7 @@ static inline int sync_blockdev(struct block_device *bdev)
#endif
int fsync_bdev(struct block_device *bdev);
struct super_block *freeze_bdev(struct block_device *bdev);
int thaw_bdev(struct block_device *bdev, struct super_block *sb);
int freeze_bdev(struct block_device *bdev);
int thaw_bdev(struct block_device *bdev);
#endif /* _LINUX_BLKDEV_H */

5
include/linux/blktrace_api.h
View File

@ -75,8 +75,7 @@ static inline bool blk_trace_note_message_enabled(struct request_queue *q)
return ret;
}
extern void blk_add_driver_data(struct request_queue *q, struct request *rq,
void *data, size_t len);
extern void blk_add_driver_data(struct request *rq, void *data, size_t len);
extern int blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
struct block_device *bdev,
char __user *arg);
@ -90,7 +89,7 @@ extern struct attribute_group blk_trace_attr_group;
#else /* !CONFIG_BLK_DEV_IO_TRACE */
# define blk_trace_ioctl(bdev, cmd, arg) (-ENOTTY)
# define blk_trace_shutdown(q) do { } while (0)
# define blk_add_driver_data(q, rq, data, len) do {} while (0)
# define blk_add_driver_data(rq, data, len) do {} while (0)
# define blk_trace_setup(q, name, dev, bdev, arg) (-ENOTTY)
# define blk_trace_startstop(q, start) (-ENOTTY)
# define blk_trace_remove(q) (-ENOTTY)

20
include/linux/bvec.h
View File

@ -121,18 +121,28 @@ static inline bool bvec_iter_advance(const struct bio_vec *bv,
return true;
}
static inline void bvec_iter_skip_zero_bvec(struct bvec_iter *iter)
/*
* A simpler version of bvec_iter_advance(), @bytes should not span
* across multiple bvec entries, i.e. bytes <= bv[i->bi_idx].bv_len
*/
static inline void bvec_iter_advance_single(const struct bio_vec *bv,
struct bvec_iter *iter, unsigned int bytes)
{
iter->bi_bvec_done = 0;
iter->bi_idx++;
unsigned int done = iter->bi_bvec_done + bytes;
if (done == bv[iter->bi_idx].bv_len) {
done = 0;
iter->bi_idx++;
}
iter->bi_bvec_done = done;
iter->bi_size -= bytes;
}
#define for_each_bvec(bvl, bio_vec, iter, start) \
for (iter = (start); \
(iter).bi_size && \
((bvl = bvec_iter_bvec((bio_vec), (iter))), 1); \
(bvl).bv_len ? (void)bvec_iter_advance((bio_vec), &(iter), \
(bvl).bv_len) : bvec_iter_skip_zero_bvec(&(iter)))
bvec_iter_advance_single((bio_vec), &(iter), (bvl).bv_len))
/* for iterating one bio from start to end */
#define BVEC_ITER_ALL_INIT (struct bvec_iter) \

Some files were not shown because too many files have changed in this diff Show More