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Merge branch 'block' of git://brick.kernel.dk/data/git/linux-2.6-block

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* 'block' of git://brick.kernel.dk/data/git/linux-2.6-block: (67 commits)
  [PATCH] blk_queue_start_tag() shared map race fix
  [PATCH] Update axboe@suse.de email address
  [PATCH] fix creating zero sized bio mempools in low memory system
  [PATCH] CONFIG_BLOCK: blk_congestion_wait() fix
  [PATCH] CONFIG_BLOCK internal.h cleanups
  [PATCH] BLOCK: Make USB storage depend on SCSI rather than selecting it [try #6]
  [PATCH] BLOCK: Make it possible to disable the block layer [try #6]
  [PATCH] BLOCK: Remove no-longer necessary linux/buffer_head.h inclusions [try #6]
  [PATCH] BLOCK: Remove no-longer necessary linux/mpage.h inclusions [try #6]
  [PATCH] BLOCK: Move the msdos device ioctl compat stuff to the msdos driver [try #6]
  [PATCH] BLOCK: Move the Ext3 device ioctl compat stuff to the Ext3 driver [try #6]
  [PATCH] BLOCK: Move the Ext2 device ioctl compat stuff to the Ext2 driver [try #6]
  [PATCH] BLOCK: Move the ReiserFS device ioctl compat stuff to the ReiserFS driver [try #6]
  [PATCH] BLOCK: Move common FS-specific ioctls to linux/fs.h [try #6]
  [PATCH] BLOCK: Move the loop device ioctl compat stuff to the loop driver [try #6]
  [PATCH] BLOCK: Move __invalidate_device() to block_dev.c [try #6]
  [PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]
  [PATCH] BLOCK: Remove dependence on existence of blockdev_superblock [try #6]
  [PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]
  [PATCH] BLOCK: Don't call block_sync_page() from AFS [try #6]
  ...
This commit is contained in:
Linus Torvalds 2006-09-30 12:07:01 -07:00
commit 56f29d7fe4
147 changed files with 2844 additions and 2887 deletions
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8
MAINTAINERS
View File

@ -501,7 +501,7 @@ S: Maintained
BLOCK LAYER
P: Jens Axboe
M: axboe@suse.de
M: axboe@kernel.dk
L: linux-kernel@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/axboe/linux-2.6-block.git
S: Maintained
@ -1380,7 +1380,7 @@ S: Maintained
IDE/ATAPI CDROM DRIVER
P: Jens Axboe
M: axboe@suse.de
M: axboe@kernel.dk
L: linux-kernel@vger.kernel.org
W: http://www.kernel.dk
S: Maintained
@ -2531,7 +2531,7 @@ S: Maintained
SCSI CDROM DRIVER
P: Jens Axboe
M: axboe@suse.de
M: axboe@kernel.dk
L: linux-scsi@vger.kernel.org
W: http://www.kernel.dk
S: Maintained
@ -2976,7 +2976,7 @@ S: Maintained
UNIFORM CDROM DRIVER
P: Jens Axboe
M: axboe@suse.de
M: axboe@kernel.dk
L: linux-kernel@vger.kernel.org
W: http://www.kernel.dk
S: Maintained

4
arch/mips/kernel/signal_n32.c
View File

@ -42,6 +42,8 @@
#include "signal-common.h"
extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
/*
* Including <asm/unistd.h> would give use the 64-bit syscall numbers ...
*/
@ -81,8 +83,6 @@ struct rt_sigframe_n32 {
#endif
};
extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);
save_static_function(sysn32_rt_sigsuspend);
__attribute_used__ noinline static int
_sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)

2
arch/um/drivers/ubd_kern.c
View File

@ -981,8 +981,6 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req)
__u64 offset;
int len;
if(req->rq_status == RQ_INACTIVE) return(1);
/* This should be impossible now */
if((rq_data_dir(req) == WRITE) && !dev->openflags.w){
printk("Write attempted on readonly ubd device %s\n",

20
block/Kconfig
View File

@ -1,6 +1,24 @@
#
# Block layer core configuration
#
config BLOCK
bool "Enable the block layer"
default y
help
This permits the block layer to be removed from the kernel if it's not
needed (on some embedded devices for example). If this option is
disabled, then blockdev files will become unusable and some
filesystems (such as ext3) will become unavailable.
This option will also disable SCSI character devices and USB storage
since they make use of various block layer definitions and
facilities.
Say Y here unless you know you really don't want to mount disks and
suchlike.
if BLOCK
#XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64
#for instance.
config LBD
@ -33,4 +51,6 @@ config LSF
If unsure, say Y.
endif
source block/Kconfig.iosched

3
block/Kconfig.iosched
View File

@ -1,3 +1,4 @@
if BLOCK
menu "IO Schedulers"
@ -67,3 +68,5 @@ config DEFAULT_IOSCHED
default "noop" if DEFAULT_NOOP
endmenu
endif

2
block/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for the kernel block layer
#
obj-y := elevator.o ll_rw_blk.o ioctl.o genhd.o scsi_ioctl.o
obj-$(CONFIG_BLOCK) := elevator.o ll_rw_blk.o ioctl.o genhd.o scsi_ioctl.o
obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o
obj-$(CONFIG_IOSCHED_AS) += as-iosched.o

672
block/as-iosched.c
View File

File diff suppressed because it is too large Load Diff

26
block/blktrace.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2006 Jens Axboe <axboe@suse.de>
* Copyright (C) 2006 Jens Axboe <axboe@kernel.dk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -69,7 +69,7 @@ static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ), BLK_TC_ACT(BLK
/*
* Bio action bits of interest
*/
static u32 bio_act[5] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_ACT(BLK_TC_SYNC), 0, BLK_TC_ACT(BLK_TC_AHEAD) };
static u32 bio_act[9] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_ACT(BLK_TC_SYNC), 0, BLK_TC_ACT(BLK_TC_AHEAD), 0, 0, 0, BLK_TC_ACT(BLK_TC_META) };
/*
* More could be added as needed, taking care to increment the decrementer
@ -81,6 +81,8 @@ static u32 bio_act[5] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_AC
(((rw) & (1 << BIO_RW_SYNC)) >> (BIO_RW_SYNC - 1))
#define trace_ahead_bit(rw) \
(((rw) & (1 << BIO_RW_AHEAD)) << (2 - BIO_RW_AHEAD))
#define trace_meta_bit(rw) \
(((rw) & (1 << BIO_RW_META)) >> (BIO_RW_META - 3))
/*
* The worker for the various blk_add_trace*() types. Fills out a
@ -103,6 +105,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
what |= bio_act[trace_barrier_bit(rw)];
what |= bio_act[trace_sync_bit(rw)];
what |= bio_act[trace_ahead_bit(rw)];
what |= bio_act[trace_meta_bit(rw)];
pid = tsk->pid;
if (unlikely(act_log_check(bt, what, sector, pid)))
@ -473,6 +476,9 @@ static void blk_check_time(unsigned long long *t)
*t -= (a + b) / 2;
}
/*
* calibrate our inter-CPU timings
*/
static void blk_trace_check_cpu_time(void *data)
{
unsigned long long *t;
@ -490,20 +496,6 @@ static void blk_trace_check_cpu_time(void *data)
put_cpu();
}
/*
* Call blk_trace_check_cpu_time() on each CPU to calibrate our inter-CPU
* timings
*/
static void blk_trace_calibrate_offsets(void)
{
unsigned long flags;
smp_call_function(blk_trace_check_cpu_time, NULL, 1, 1);
local_irq_save(flags);
blk_trace_check_cpu_time(NULL);
local_irq_restore(flags);
}
static void blk_trace_set_ht_offsets(void)
{
#if defined(CONFIG_SCHED_SMT)
@ -532,7 +524,7 @@ static void blk_trace_set_ht_offsets(void)
static __init int blk_trace_init(void)
{
mutex_init(&blk_tree_mutex);
blk_trace_calibrate_offsets();
on_each_cpu(blk_trace_check_cpu_time, NULL, 1, 1);
blk_trace_set_ht_offsets();
return 0;

871
block/cfq-iosched.c
View File

File diff suppressed because it is too large Load Diff

464
block/deadline-iosched.c
View File

@ -1,7 +1,7 @@
/*
* Deadline i/o scheduler.
*
* Copyright (C) 2002 Jens Axboe <axboe@suse.de>
* Copyright (C) 2002 Jens Axboe <axboe@kernel.dk>
*/
#include <linux/kernel.h>
#include <linux/fs.h>
@ -12,7 +12,6 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/compiler.h>
#include <linux/hash.h>
#include <linux/rbtree.h>
/*
@ -24,13 +23,6 @@ static const int writes_starved = 2; /* max times reads can starve a write */
static const int fifo_batch = 16; /* # of sequential requests treated as one
by the above parameters. For throughput. */
static const int deadline_hash_shift = 5;
#define DL_HASH_BLOCK(sec) ((sec) >> 3)
#define DL_HASH_FN(sec) (hash_long(DL_HASH_BLOCK((sec)), deadline_hash_shift))
#define DL_HASH_ENTRIES (1 << deadline_hash_shift)
#define rq_hash_key(rq) ((rq)->sector + (rq)->nr_sectors)
#define ON_HASH(drq) (!hlist_unhashed(&(drq)->hash))
struct deadline_data {
/*
* run time data
@ -45,8 +37,7 @@ struct deadline_data {
/*
* next in sort order. read, write or both are NULL
*/
struct deadline_rq *next_drq[2];
struct hlist_head *hash; /* request hash */
struct request *next_rq[2];
unsigned int batching; /* number of sequential requests made */
sector_t last_sector; /* head position */
unsigned int starved; /* times reads have starved writes */
@ -58,240 +49,69 @@ struct deadline_data {
int fifo_batch;
int writes_starved;
int front_merges;
mempool_t *drq_pool;
};
/*
* pre-request data.
*/
struct deadline_rq {
/*
* rbtree index, key is the starting offset
*/
struct rb_node rb_node;
sector_t rb_key;
static void deadline_move_request(struct deadline_data *, struct request *);
struct request *request;
/*
* request hash, key is the ending offset (for back merge lookup)
*/
struct hlist_node hash;
/*
* expire fifo
*/
struct list_head fifo;
unsigned long expires;
};
static void deadline_move_request(struct deadline_data *dd, struct deadline_rq *drq);
static kmem_cache_t *drq_pool;
#define RQ_DATA(rq) ((struct deadline_rq *) (rq)->elevator_private)
/*
* the back merge hash support functions
*/
static inline void __deadline_del_drq_hash(struct deadline_rq *drq)
{
hlist_del_init(&drq->hash);
}
static inline void deadline_del_drq_hash(struct deadline_rq *drq)
{
if (ON_HASH(drq))
__deadline_del_drq_hash(drq);
}
static inline void
deadline_add_drq_hash(struct deadline_data *dd, struct deadline_rq *drq)
{
struct request *rq = drq->request;
BUG_ON(ON_HASH(drq));
hlist_add_head(&drq->hash, &dd->hash[DL_HASH_FN(rq_hash_key(rq))]);
}
/*
* move hot entry to front of chain
*/
static inline void
deadline_hot_drq_hash(struct deadline_data *dd, struct deadline_rq *drq)
{
struct request *rq = drq->request;
struct hlist_head *head = &dd->hash[DL_HASH_FN(rq_hash_key(rq))];
if (ON_HASH(drq) && &drq->hash != head->first) {
hlist_del(&drq->hash);
hlist_add_head(&drq->hash, head);
}
}
static struct request *
deadline_find_drq_hash(struct deadline_data *dd, sector_t offset)
{
struct hlist_head *hash_list = &dd->hash[DL_HASH_FN(offset)];
struct hlist_node *entry, *next;
struct deadline_rq *drq;
hlist_for_each_entry_safe(drq, entry, next, hash_list, hash) {
struct request *__rq = drq->request;
BUG_ON(!ON_HASH(drq));
if (!rq_mergeable(__rq)) {
__deadline_del_drq_hash(drq);
continue;
}
if (rq_hash_key(__rq) == offset)
return __rq;
}
return NULL;
}
/*
* rb tree support functions
*/
#define rb_entry_drq(node) rb_entry((node), struct deadline_rq, rb_node)
#define DRQ_RB_ROOT(dd, drq) (&(dd)->sort_list[rq_data_dir((drq)->request)])
#define rq_rb_key(rq) (rq)->sector
static struct deadline_rq *
__deadline_add_drq_rb(struct deadline_data *dd, struct deadline_rq *drq)
{
struct rb_node **p = &DRQ_RB_ROOT(dd, drq)->rb_node;
struct rb_node *parent = NULL;
struct deadline_rq *__drq;
while (*p) {
parent = *p;
__drq = rb_entry_drq(parent);
if (drq->rb_key < __drq->rb_key)
p = &(*p)->rb_left;
else if (drq->rb_key > __drq->rb_key)
p = &(*p)->rb_right;
else
return __drq;
}
rb_link_node(&drq->rb_node, parent, p);
return NULL;
}
#define RQ_RB_ROOT(dd, rq) (&(dd)->sort_list[rq_data_dir((rq))])
static void
deadline_add_drq_rb(struct deadline_data *dd, struct deadline_rq *drq)
deadline_add_rq_rb(struct deadline_data *dd, struct request *rq)
{
struct deadline_rq *__alias;
drq->rb_key = rq_rb_key(drq->request);
struct rb_root *root = RQ_RB_ROOT(dd, rq);
struct request *__alias;
retry:
__alias = __deadline_add_drq_rb(dd, drq);
if (!__alias) {
rb_insert_color(&drq->rb_node, DRQ_RB_ROOT(dd, drq));
return;
__alias = elv_rb_add(root, rq);
if (unlikely(__alias)) {
deadline_move_request(dd, __alias);
goto retry;
}
deadline_move_request(dd, __alias);
goto retry;
}
static inline void
deadline_del_drq_rb(struct deadline_data *dd, struct deadline_rq *drq)
deadline_del_rq_rb(struct deadline_data *dd, struct request *rq)
{
const int data_dir = rq_data_dir(drq->request);
const int data_dir = rq_data_dir(rq);
if (dd->next_drq[data_dir] == drq) {
struct rb_node *rbnext = rb_next(&drq->rb_node);
if (dd->next_rq[data_dir] == rq) {
struct rb_node *rbnext = rb_next(&rq->rb_node);
dd->next_drq[data_dir] = NULL;
dd->next_rq[data_dir] = NULL;
if (rbnext)
dd->next_drq[data_dir] = rb_entry_drq(rbnext);
dd->next_rq[data_dir] = rb_entry_rq(rbnext);
}
BUG_ON(!RB_EMPTY_NODE(&drq->rb_node));
rb_erase(&drq->rb_node, DRQ_RB_ROOT(dd, drq));
RB_CLEAR_NODE(&drq->rb_node);
}
static struct request *
deadline_find_drq_rb(struct deadline_data *dd, sector_t sector, int data_dir)
{
struct rb_node *n = dd->sort_list[data_dir].rb_node;
struct deadline_rq *drq;
while (n) {
drq = rb_entry_drq(n);
if (sector < drq->rb_key)
n = n->rb_left;
else if (sector > drq->rb_key)
n = n->rb_right;
else
return drq->request;
}
return NULL;
elv_rb_del(RQ_RB_ROOT(dd, rq), rq);
}
/*
* deadline_find_first_drq finds the first (lowest sector numbered) request
* for the specified data_dir. Used to sweep back to the start of the disk
* (1-way elevator) after we process the last (highest sector) request.
*/
static struct deadline_rq *
deadline_find_first_drq(struct deadline_data *dd, int data_dir)
{
struct rb_node *n = dd->sort_list[data_dir].rb_node;
for (;;) {
if (n->rb_left == NULL)
return rb_entry_drq(n);
n = n->rb_left;
}
}
/*
* add drq to rbtree and fifo
* add rq to rbtree and fifo
*/
static void
deadline_add_request(struct request_queue *q, struct request *rq)
{
struct deadline_data *dd = q->elevator->elevator_data;
struct deadline_rq *drq = RQ_DATA(rq);
const int data_dir = rq_data_dir(rq);
const int data_dir = rq_data_dir(drq->request);
deadline_add_rq_rb(dd, rq);
deadline_add_drq_rb(dd, drq);
/*
* set expire time (only used for reads) and add to fifo list
*/
drq->expires = jiffies + dd->fifo_expire[data_dir];
list_add_tail(&drq->fifo, &dd->fifo_list[data_dir]);
if (rq_mergeable(rq))
deadline_add_drq_hash(dd, drq);
rq_set_fifo_time(rq, jiffies + dd->fifo_expire[data_dir]);
list_add_tail(&rq->queuelist, &dd->fifo_list[data_dir]);
}
/*
* remove rq from rbtree, fifo, and hash
* remove rq from rbtree and fifo.
*/
static void deadline_remove_request(request_queue_t *q, struct request *rq)
{
struct deadline_rq *drq = RQ_DATA(rq);
struct deadline_data *dd = q->elevator->elevator_data;
list_del_init(&drq->fifo);
deadline_del_drq_rb(dd, drq);
deadline_del_drq_hash(drq);
rq_fifo_clear(rq);
deadline_del_rq_rb(dd, rq);
}
static int
@ -301,28 +121,15 @@ deadline_merge(request_queue_t *q, struct request **req, struct bio *bio)
struct request *__rq;
int ret;
/*
* see if the merge hash can satisfy a back merge
*/
__rq = deadline_find_drq_hash(dd, bio->bi_sector);
if (__rq) {
BUG_ON(__rq->sector + __rq->nr_sectors != bio->bi_sector);
if (elv_rq_merge_ok(__rq, bio)) {
ret = ELEVATOR_BACK_MERGE;
goto out;
}
}
/*
* check for front merge
*/
if (dd->front_merges) {
sector_t rb_key = bio->bi_sector + bio_sectors(bio);
sector_t sector = bio->bi_sector + bio_sectors(bio);
__rq = deadline_find_drq_rb(dd, rb_key, bio_data_dir(bio));
__rq = elv_rb_find(&dd->sort_list[bio_data_dir(bio)], sector);
if (__rq) {
BUG_ON(rb_key != rq_rb_key(__rq));
BUG_ON(sector != __rq->sector);
if (elv_rq_merge_ok(__rq, bio)) {
ret = ELEVATOR_FRONT_MERGE;
@ -333,29 +140,21 @@ deadline_merge(request_queue_t *q, struct request **req, struct bio *bio)
return ELEVATOR_NO_MERGE;
out:
if (ret)
deadline_hot_drq_hash(dd, RQ_DATA(__rq));
*req = __rq;
return ret;
}
static void deadline_merged_request(request_queue_t *q, struct request *req)
static void deadline_merged_request(request_queue_t *q, struct request *req,
int type)
{
struct deadline_data *dd = q->elevator->elevator_data;
struct deadline_rq *drq = RQ_DATA(req);
/*
* hash always needs to be repositioned, key is end sector
*/
deadline_del_drq_hash(drq);
deadline_add_drq_hash(dd, drq);
/*
* if the merge was a front merge, we need to reposition request
*/
if (rq_rb_key(req) != drq->rb_key) {
deadline_del_drq_rb(dd, drq);
deadline_add_drq_rb(dd, drq);
if (type == ELEVATOR_FRONT_MERGE) {
elv_rb_del(RQ_RB_ROOT(dd, req), req);
deadline_add_rq_rb(dd, req);
}
}
@ -363,33 +162,14 @@ static void
deadline_merged_requests(request_queue_t *q, struct request *req,
struct request *next)
{
struct deadline_data *dd = q->elevator->elevator_data;
struct deadline_rq *drq = RQ_DATA(req);
struct deadline_rq *dnext = RQ_DATA(next);
BUG_ON(!drq);
BUG_ON(!dnext);
/*
* reposition drq (this is the merged request) in hash, and in rbtree
* in case of a front merge
* if next expires before rq, assign its expire time to rq
* and move into next position (next will be deleted) in fifo
*/
deadline_del_drq_hash(drq);
deadline_add_drq_hash(dd, drq);
if (rq_rb_key(req) != drq->rb_key) {
deadline_del_drq_rb(dd, drq);
deadline_add_drq_rb(dd, drq);
}
/*
* if dnext expires before drq, assign its expire time to drq
* and move into dnext position (dnext will be deleted) in fifo
*/
if (!list_empty(&drq->fifo) && !list_empty(&dnext->fifo)) {
if (time_before(dnext->expires, drq->expires)) {
list_move(&drq->fifo, &dnext->fifo);
drq->expires = dnext->expires;
if (!list_empty(&req->queuelist) && !list_empty(&next->queuelist)) {
if (time_before(rq_fifo_time(next), rq_fifo_time(req))) {
list_move(&req->queuelist, &next->queuelist);
rq_set_fifo_time(req, rq_fifo_time(next));
}
}
@ -403,52 +183,50 @@ deadline_merged_requests(request_queue_t *q, struct request *req,
* move request from sort list to dispatch queue.
*/
static inline void
deadline_move_to_dispatch(struct deadline_data *dd, struct deadline_rq *drq)
deadline_move_to_dispatch(struct deadline_data *dd, struct request *rq)
{
request_queue_t *q = drq->request->q;
request_queue_t *q = rq->q;
deadline_remove_request(q, drq->request);
elv_dispatch_add_tail(q, drq->request);
deadline_remove_request(q, rq);
elv_dispatch_add_tail(q, rq);
}
/*
* move an entry to dispatch queue
*/
static void
deadline_move_request(struct deadline_data *dd, struct deadline_rq *drq)
deadline_move_request(struct deadline_data *dd, struct request *rq)
{
const int data_dir = rq_data_dir(drq->request);
struct rb_node *rbnext = rb_next(&drq->rb_node);
const int data_dir = rq_data_dir(rq);
struct rb_node *rbnext = rb_next(&rq->rb_node);
dd->next_drq[READ] = NULL;
dd->next_drq[WRITE] = NULL;
dd->next_rq[READ] = NULL;
dd->next_rq[WRITE] = NULL;
if (rbnext)
dd->next_drq[data_dir] = rb_entry_drq(rbnext);
dd->next_rq[data_dir] = rb_entry_rq(rbnext);
dd->last_sector = drq->request->sector + drq->request->nr_sectors;
dd->last_sector = rq->sector + rq->nr_sectors;
/*
* take it off the sort and fifo list, move
* to dispatch queue
*/
deadline_move_to_dispatch(dd, drq);
deadline_move_to_dispatch(dd, rq);
}
#define list_entry_fifo(ptr) list_entry((ptr), struct deadline_rq, fifo)
/*
* deadline_check_fifo returns 0 if there are no expired reads on the fifo,
* 1 otherwise. Requires !list_empty(&dd->fifo_list[data_dir])
*/
static inline int deadline_check_fifo(struct deadline_data *dd, int ddir)
{
struct deadline_rq *drq = list_entry_fifo(dd->fifo_list[ddir].next);
struct request *rq = rq_entry_fifo(dd->fifo_list[ddir].next);
/*
* drq is expired!
* rq is expired!
*/
if (time_after(jiffies, drq->expires))
if (time_after(jiffies, rq_fifo_time(rq)))
return 1;
return 0;
@ -463,21 +241,21 @@ static int deadline_dispatch_requests(request_queue_t *q, int force)
struct deadline_data *dd = q->elevator->elevator_data;
const int reads = !list_empty(&dd->fifo_list[READ]);
const int writes = !list_empty(&dd->fifo_list[WRITE]);
struct deadline_rq *drq;
struct request *rq;
int data_dir;
/*
* batches are currently reads XOR writes
*/
if (dd->next_drq[WRITE])
drq = dd->next_drq[WRITE];
if (dd->next_rq[WRITE])
rq = dd->next_rq[WRITE];
else
drq = dd->next_drq[READ];
rq = dd->next_rq[READ];
if (drq) {
if (rq) {
/* we have a "next request" */
if (dd->last_sector != drq->request->sector)
if (dd->last_sector != rq->sector)
/* end the batch on a non sequential request */
dd->batching += dd->fifo_batch;
@ -526,30 +304,33 @@ dispatch_find_request:
if (deadline_check_fifo(dd, data_dir)) {
/* An expired request exists - satisfy it */
dd->batching = 0;
drq = list_entry_fifo(dd->fifo_list[data_dir].next);
rq = rq_entry_fifo(dd->fifo_list[data_dir].next);
} else if (dd->next_drq[data_dir]) {
} else if (dd->next_rq[data_dir]) {
/*
* The last req was the same dir and we have a next request in
* sort order. No expired requests so continue on from here.
*/
drq = dd->next_drq[data_dir];
rq = dd->next_rq[data_dir];
} else {
struct rb_node *node;
/*
* The last req was the other direction or we have run out of
* higher-sectored requests. Go back to the lowest sectored
* request (1 way elevator) and start a new batch.
*/
dd->batching = 0;
drq = deadline_find_first_drq(dd, data_dir);
node = rb_first(&dd->sort_list[data_dir]);
if (node)
rq = rb_entry_rq(node);
}
dispatch_request:
/*
* drq is the selected appropriate request.
* rq is the selected appropriate request.
*/
dd->batching++;
deadline_move_request(dd, drq);
deadline_move_request(dd, rq);
return 1;
}
@ -562,30 +343,6 @@ static int deadline_queue_empty(request_queue_t *q)
&& list_empty(&dd->fifo_list[READ]);
}
static struct request *
deadline_former_request(request_queue_t *q, struct request *rq)
{
struct deadline_rq *drq = RQ_DATA(rq);
struct rb_node *rbprev = rb_prev(&drq->rb_node);
if (rbprev)
return rb_entry_drq(rbprev)->request;
return NULL;
}
static struct request *
deadline_latter_request(request_queue_t *q, struct request *rq)
{
struct deadline_rq *drq = RQ_DATA(rq);
struct rb_node *rbnext = rb_next(&drq->rb_node);
if (rbnext)
return rb_entry_drq(rbnext)->request;
return NULL;
}
static void deadline_exit_queue(elevator_t *e)
{
struct deadline_data *dd = e->elevator_data;
@ -593,46 +350,21 @@ static void deadline_exit_queue(elevator_t *e)
BUG_ON(!list_empty(&dd->fifo_list[READ]));
BUG_ON(!list_empty(&dd->fifo_list[WRITE]));
mempool_destroy(dd->drq_pool);
kfree(dd->hash);
kfree(dd);
}
/*
* initialize elevator private data (deadline_data), and alloc a drq for
* each request on the free lists
* initialize elevator private data (deadline_data).
*/
static void *deadline_init_queue(request_queue_t *q, elevator_t *e)
{
struct deadline_data *dd;
int i;
if (!drq_pool)
return NULL;
dd = kmalloc_node(sizeof(*dd), GFP_KERNEL, q->node);
if (!dd)
return NULL;
memset(dd, 0, sizeof(*dd));
dd->hash = kmalloc_node(sizeof(struct hlist_head)*DL_HASH_ENTRIES,
GFP_KERNEL, q->node);
if (!dd->hash) {
kfree(dd);
return NULL;
}
dd->drq_pool = mempool_create_node(BLKDEV_MIN_RQ, mempool_alloc_slab,
mempool_free_slab, drq_pool, q->node);
if (!dd->drq_pool) {
kfree(dd->hash);
kfree(dd);
return NULL;
}
for (i = 0; i < DL_HASH_ENTRIES; i++)
INIT_HLIST_HEAD(&dd->hash[i]);
INIT_LIST_HEAD(&dd->fifo_list[READ]);
INIT_LIST_HEAD(&dd->fifo_list[WRITE]);
dd->sort_list[READ] = RB_ROOT;
@ -645,39 +377,6 @@ static void *deadline_init_queue(request_queue_t *q, elevator_t *e)
return dd;
}
static void deadline_put_request(request_queue_t *q, struct request *rq)
{
struct deadline_data *dd = q->elevator->elevator_data;
struct deadline_rq *drq = RQ_DATA(rq);
mempool_free(drq, dd->drq_pool);
rq->elevator_private = NULL;
}
static int
deadline_set_request(request_queue_t *q, struct request *rq, struct bio *bio,
gfp_t gfp_mask)
{
struct deadline_data *dd = q->elevator->elevator_data;
struct deadline_rq *drq;
drq = mempool_alloc(dd->drq_pool, gfp_mask);
if (drq) {
memset(drq, 0, sizeof(*drq));
RB_CLEAR_NODE(&drq->rb_node);
drq->request = rq;
INIT_HLIST_NODE(&drq->hash);
INIT_LIST_HEAD(&drq->fifo);
rq->elevator_private = drq;
return 0;
}
return 1;
}
/*
* sysfs parts below
*/
@ -757,10 +456,8 @@ static struct elevator_type iosched_deadline = {
.elevator_dispatch_fn = deadline_dispatch_requests,
.elevator_add_req_fn = deadline_add_request,
.elevator_queue_empty_fn = deadline_queue_empty,
.elevator_former_req_fn = deadline_former_request,
.elevator_latter_req_fn = deadline_latter_request,
.elevator_set_req_fn = deadline_set_request,
.elevator_put_req_fn = deadline_put_request,
.elevator_former_req_fn = elv_rb_former_request,
.elevator_latter_req_fn = elv_rb_latter_request,
.elevator_init_fn = deadline_init_queue,
.elevator_exit_fn = deadline_exit_queue,
},
@ -772,24 +469,11 @@ static struct elevator_type iosched_deadline = {
static int __init deadline_init(void)
{
int ret;
drq_pool = kmem_cache_create("deadline_drq", sizeof(struct deadline_rq),
0, 0, NULL, NULL);
if (!drq_pool)
return -ENOMEM;
ret = elv_register(&iosched_deadline);
if (ret)
kmem_cache_destroy(drq_pool);
return ret;
return elv_register(&iosched_deadline);
}
static void __exit deadline_exit(void)
{
kmem_cache_destroy(drq_pool);
elv_unregister(&iosched_deadline);
}

313
block/elevator.c
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
*
* 30042000 Jens Axboe <axboe@suse.de> :
* 30042000 Jens Axboe <axboe@kernel.dk> :
*
* Split the elevator a bit so that it is possible to choose a different
* one or even write a new "plug in". There are three pieces:
@ -33,12 +33,23 @@
#include <linux/compiler.h>
#include <linux/delay.h>
#include <linux/blktrace_api.h>
#include <linux/hash.h>
#include <asm/uaccess.h>
static DEFINE_SPINLOCK(elv_list_lock);
static LIST_HEAD(elv_list);
/*
* Merge hash stuff.
*/
static const int elv_hash_shift = 6;
#define ELV_HASH_BLOCK(sec) ((sec) >> 3)
#define ELV_HASH_FN(sec) (hash_long(ELV_HASH_BLOCK((sec)), elv_hash_shift))
#define ELV_HASH_ENTRIES (1 << elv_hash_shift)
#define rq_hash_key(rq) ((rq)->sector + (rq)->nr_sectors)
#define ELV_ON_HASH(rq) (!hlist_unhashed(&(rq)->hash))
/*
* can we safely merge with this request?
*/
@ -56,8 +67,7 @@ inline int elv_rq_merge_ok(struct request *rq, struct bio *bio)
/*
* same device and no special stuff set, merge is ok
*/
if (rq->rq_disk == bio->bi_bdev->bd_disk &&
!rq->waiting && !rq->special)
if (rq->rq_disk == bio->bi_bdev->bd_disk && !rq->special)
return 1;
return 0;
@ -151,27 +161,44 @@ __setup("elevator=", elevator_setup);
static struct kobj_type elv_ktype;
static elevator_t *elevator_alloc(struct elevator_type *e)
static elevator_t *elevator_alloc(request_queue_t *q, struct elevator_type *e)
{
elevator_t *eq = kmalloc(sizeof(elevator_t), GFP_KERNEL);
if (eq) {
memset(eq, 0, sizeof(*eq));
eq->ops = &e->ops;
eq->elevator_type = e;
kobject_init(&eq->kobj);
snprintf(eq->kobj.name, KOBJ_NAME_LEN, "%s", "iosched");
eq->kobj.ktype = &elv_ktype;
mutex_init(&eq->sysfs_lock);
} else {
elevator_put(e);
}
elevator_t *eq;
int i;
eq = kmalloc_node(sizeof(elevator_t), GFP_KERNEL, q->node);
if (unlikely(!eq))
goto err;
memset(eq, 0, sizeof(*eq));
eq->ops = &e->ops;
eq->elevator_type = e;
kobject_init(&eq->kobj);
snprintf(eq->kobj.name, KOBJ_NAME_LEN, "%s", "iosched");
eq->kobj.ktype = &elv_ktype;
mutex_init(&eq->sysfs_lock);
eq->hash = kmalloc_node(sizeof(struct hlist_head) * ELV_HASH_ENTRIES,
GFP_KERNEL, q->node);
if (!eq->hash)
goto err;
for (i = 0; i < ELV_HASH_ENTRIES; i++)
INIT_HLIST_HEAD(&eq->hash[i]);
return eq;
err:
kfree(eq);
elevator_put(e);
return NULL;
}
static void elevator_release(struct kobject *kobj)
{
elevator_t *e = container_of(kobj, elevator_t, kobj);
elevator_put(e->elevator_type);
kfree(e->hash);
kfree(e);
}
@ -198,7 +225,7 @@ int elevator_init(request_queue_t *q, char *name)
e = elevator_get("noop");
}
eq = elevator_alloc(e);
eq = elevator_alloc(q, e);
if (!eq)
return -ENOMEM;
@ -212,6 +239,8 @@ int elevator_init(request_queue_t *q, char *name)
return ret;
}
EXPORT_SYMBOL(elevator_init);
void elevator_exit(elevator_t *e)
{
mutex_lock(&e->sysfs_lock);
@ -223,10 +252,118 @@ void elevator_exit(elevator_t *e)
kobject_put(&e->kobj);
}
EXPORT_SYMBOL(elevator_exit);
static inline void __elv_rqhash_del(struct request *rq)
{
hlist_del_init(&rq->hash);
}
static void elv_rqhash_del(request_queue_t *q, struct request *rq)
{
if (ELV_ON_HASH(rq))
__elv_rqhash_del(rq);
}
static void elv_rqhash_add(request_queue_t *q, struct request *rq)
{
elevator_t *e = q->elevator;
BUG_ON(ELV_ON_HASH(rq));
hlist_add_head(&rq->hash, &e->hash[ELV_HASH_FN(rq_hash_key(rq))]);
}
static void elv_rqhash_reposition(request_queue_t *q, struct request *rq)
{
__elv_rqhash_del(rq);
elv_rqhash_add(q, rq);
}
static struct request *elv_rqhash_find(request_queue_t *q, sector_t offset)
{
elevator_t *e = q->elevator;
struct hlist_head *hash_list = &e->hash[ELV_HASH_FN(offset)];
struct hlist_node *entry, *next;
struct request *rq;
hlist_for_each_entry_safe(rq, entry, next, hash_list, hash) {
BUG_ON(!ELV_ON_HASH(rq));
if (unlikely(!rq_mergeable(rq))) {
__elv_rqhash_del(rq);
continue;
}
if (rq_hash_key(rq) == offset)
return rq;
}
return NULL;
}
/*
* RB-tree support functions for inserting/lookup/removal of requests
* in a sorted RB tree.
*/
struct request *elv_rb_add(struct rb_root *root, struct request *rq)
{
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
struct request *__rq;
while (*p) {
parent = *p;
__rq = rb_entry(parent, struct request, rb_node);
if (rq->sector < __rq->sector)
p = &(*p)->rb_left;
else if (rq->sector > __rq->sector)
p = &(*p)->rb_right;
else
return __rq;
}
rb_link_node(&rq->rb_node, parent, p);
rb_insert_color(&rq->rb_node, root);
return NULL;
}
EXPORT_SYMBOL(elv_rb_add);
void elv_rb_del(struct rb_root *root, struct request *rq)
{
BUG_ON(RB_EMPTY_NODE(&rq->rb_node));
rb_erase(&rq->rb_node, root);
RB_CLEAR_NODE(&rq->rb_node);
}
EXPORT_SYMBOL(elv_rb_del);
struct request *elv_rb_find(struct rb_root *root, sector_t sector)
{
struct rb_node *n = root->rb_node;
struct request *rq;
while (n) {
rq = rb_entry(n, struct request, rb_node);
if (sector < rq->sector)
n = n->rb_left;
else if (sector > rq->sector)
n = n->rb_right;
else
return rq;
}
return NULL;
}
EXPORT_SYMBOL(elv_rb_find);
/*
* Insert rq into dispatch queue of q. Queue lock must be held on
* entry. If sort != 0, rq is sort-inserted; otherwise, rq will be
* appended to the dispatch queue. To be used by specific elevators.
* entry. rq is sort insted into the dispatch queue. To be used by
* specific elevators.
*/
void elv_dispatch_sort(request_queue_t *q, struct request *rq)
{
@ -235,6 +372,9 @@ void elv_dispatch_sort(request_queue_t *q, struct request *rq)
if (q->last_merge == rq)
q->last_merge = NULL;
elv_rqhash_del(q, rq);
q->nr_sorted--;
boundary = q->end_sector;
@ -242,7 +382,7 @@ void elv_dispatch_sort(request_queue_t *q, struct request *rq)
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
if (pos->flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED))
if (pos->cmd_flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED))
break;
if (rq->sector >= boundary) {
if (pos->sector < boundary)
@ -258,11 +398,38 @@ void elv_dispatch_sort(request_queue_t *q, struct request *rq)
list_add(&rq->queuelist, entry);
}
EXPORT_SYMBOL(elv_dispatch_sort);
/*
* Insert rq into dispatch queue of q. Queue lock must be held on
* entry. rq is added to the back of the dispatch queue. To be used by
* specific elevators.
*/
void elv_dispatch_add_tail(struct request_queue *q, struct request *rq)
{
if (q->last_merge == rq)
q->last_merge = NULL;
elv_rqhash_del(q, rq);
q->nr_sorted--;
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
list_add_tail(&rq->queuelist, &q->queue_head);
}
EXPORT_SYMBOL(elv_dispatch_add_tail);
int elv_merge(request_queue_t *q, struct request **req, struct bio *bio)
{
elevator_t *e = q->elevator;
struct request *__rq;
int ret;
/*
* First try one-hit cache.
*/
if (q->last_merge) {
ret = elv_try_merge(q->last_merge, bio);
if (ret != ELEVATOR_NO_MERGE) {
@ -271,18 +438,30 @@ int elv_merge(request_queue_t *q, struct request **req, struct bio *bio)
}
}
/*
* See if our hash lookup can find a potential backmerge.
*/
__rq = elv_rqhash_find(q, bio->bi_sector);
if (__rq && elv_rq_merge_ok(__rq, bio)) {
*req = __rq;
return ELEVATOR_BACK_MERGE;
}
if (e->ops->elevator_merge_fn)
return e->ops->elevator_merge_fn(q, req, bio);
return ELEVATOR_NO_MERGE;
}
void elv_merged_request(request_queue_t *q, struct request *rq)
void elv_merged_request(request_queue_t *q, struct request *rq, int type)
{
elevator_t *e = q->elevator;
if (e->ops->elevator_merged_fn)
e->ops->elevator_merged_fn(q, rq);
e->ops->elevator_merged_fn(q, rq, type);
if (type == ELEVATOR_BACK_MERGE)
elv_rqhash_reposition(q, rq);
q->last_merge = rq;
}
@ -294,8 +473,11 @@ void elv_merge_requests(request_queue_t *q, struct request *rq,
if (e->ops->elevator_merge_req_fn)
e->ops->elevator_merge_req_fn(q, rq, next);
q->nr_sorted--;
elv_rqhash_reposition(q, rq);
elv_rqhash_del(q, next);
q->nr_sorted--;
q->last_merge = rq;
}
@ -313,7 +495,7 @@ void elv_requeue_request(request_queue_t *q, struct request *rq)
e->ops->elevator_deactivate_req_fn(q, rq);
}
rq->flags &= ~REQ_STARTED;
rq->cmd_flags &= ~REQ_STARTED;
elv_insert(q, rq, ELEVATOR_INSERT_REQUEUE);
}
@ -344,13 +526,13 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
switch (where) {
case ELEVATOR_INSERT_FRONT:
rq->flags |= REQ_SOFTBARRIER;
rq->cmd_flags |= REQ_SOFTBARRIER;
list_add(&rq->queuelist, &q->queue_head);
break;
case ELEVATOR_INSERT_BACK:
rq->flags |= REQ_SOFTBARRIER;
rq->cmd_flags |= REQ_SOFTBARRIER;
elv_drain_elevator(q);
list_add_tail(&rq->queuelist, &q->queue_head);
/*
@ -369,10 +551,14 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
case ELEVATOR_INSERT_SORT:
BUG_ON(!blk_fs_request(rq));
rq->flags |= REQ_SORTED;
rq->cmd_flags |= REQ_SORTED;
q->nr_sorted++;
if (q->last_merge == NULL && rq_mergeable(rq))
q->last_merge = rq;
if (rq_mergeable(rq)) {
elv_rqhash_add(q, rq);
if (!q->last_merge)
q->last_merge = rq;
}
/*
* Some ioscheds (cfq) run q->request_fn directly, so
* rq cannot be accessed after calling
@ -387,7 +573,7 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
* insertion; otherwise, requests should be requeued
* in ordseq order.
*/
rq->flags |= REQ_SOFTBARRIER;
rq->cmd_flags |= REQ_SOFTBARRIER;
if (q->ordseq == 0) {
list_add(&rq->queuelist, &q->queue_head);
@ -429,9 +615,9 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where,
int plug)
{
if (q->ordcolor)
rq->flags |= REQ_ORDERED_COLOR;
rq->cmd_flags |= REQ_ORDERED_COLOR;
if (rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
if (rq->cmd_flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
/*
* toggle ordered color
*/
@ -452,7 +638,7 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where,
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
}
} else if (!(rq->flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT)
} else if (!(rq->cmd_flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT)
where = ELEVATOR_INSERT_BACK;
if (plug)
@ -461,6 +647,8 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where,
elv_insert(q, rq, where);
}
EXPORT_SYMBOL(__elv_add_request);
void elv_add_request(request_queue_t *q, struct request *rq, int where,
int plug)
{
@ -471,6 +659,8 @@ void elv_add_request(request_queue_t *q, struct request *rq, int where,
spin_unlock_irqrestore(q->queue_lock, flags);
}
EXPORT_SYMBOL(elv_add_request);
static inline struct request *__elv_next_request(request_queue_t *q)
{
struct request *rq;
@ -493,7 +683,7 @@ struct request *elv_next_request(request_queue_t *q)
int ret;
while ((rq = __elv_next_request(q)) != NULL) {
if (!(rq->flags & REQ_STARTED)) {
if (!(rq->cmd_flags & REQ_STARTED)) {
elevator_t *e = q->elevator;
/*
@ -510,7 +700,7 @@ struct request *elv_next_request(request_queue_t *q)
* it, a request that has been delayed should
* not be passed by new incoming requests
*/
rq->flags |= REQ_STARTED;
rq->cmd_flags |= REQ_STARTED;
blk_add_trace_rq(q, rq, BLK_TA_ISSUE);
}
@ -519,7 +709,7 @@ struct request *elv_next_request(request_queue_t *q)
q->boundary_rq = NULL;
}
if ((rq->flags & REQ_DONTPREP) || !q->prep_rq_fn)
if ((rq->cmd_flags & REQ_DONTPREP) || !q->prep_rq_fn)
break;
ret = q->prep_rq_fn(q, rq);
@ -541,7 +731,7 @@ struct request *elv_next_request(request_queue_t *q)
nr_bytes = rq->data_len;
blkdev_dequeue_request(rq);
rq->flags |= REQ_QUIET;
rq->cmd_flags |= REQ_QUIET;
end_that_request_chunk(rq, 0, nr_bytes);
end_that_request_last(rq, 0);
} else {
@ -554,9 +744,12 @@ struct request *elv_next_request(request_queue_t *q)
return rq;
}
EXPORT_SYMBOL(elv_next_request);
void elv_dequeue_request(request_queue_t *q, struct request *rq)
{
BUG_ON(list_empty(&rq->queuelist));
BUG_ON(ELV_ON_HASH(rq));
list_del_init(&rq->queuelist);
@ -569,6 +762,8 @@ void elv_dequeue_request(request_queue_t *q, struct request *rq)
q->in_flight++;
}
EXPORT_SYMBOL(elv_dequeue_request);
int elv_queue_empty(request_queue_t *q)
{
elevator_t *e = q->elevator;
@ -582,6 +777,8 @@ int elv_queue_empty(request_queue_t *q)
return 1;
}
EXPORT_SYMBOL(elv_queue_empty);
struct request *elv_latter_request(request_queue_t *q, struct request *rq)
{
elevator_t *e = q->elevator;
@ -600,13 +797,12 @@ struct request *elv_former_request(request_queue_t *q, struct request *rq)
return NULL;
}
int elv_set_request(request_queue_t *q, struct request *rq, struct bio *bio,
gfp_t gfp_mask)
int elv_set_request(request_queue_t *q, struct request *rq, gfp_t gfp_mask)
{
elevator_t *e = q->elevator;
if (e->ops->elevator_set_req_fn)
return e->ops->elevator_set_req_fn(q, rq, bio, gfp_mask);
return e->ops->elevator_set_req_fn(q, rq, gfp_mask);
rq->elevator_private = NULL;
return 0;
@ -620,12 +816,12 @@ void elv_put_request(request_queue_t *q, struct request *rq)
e->ops->elevator_put_req_fn(q, rq);
}
int elv_may_queue(request_queue_t *q, int rw, struct bio *bio)
int elv_may_queue(request_queue_t *q, int rw)
{
elevator_t *e = q->elevator;
if (e->ops->elevator_may_queue_fn)
return e->ops->elevator_may_queue_fn(q, rw, bio);
return e->ops->elevator_may_queue_fn(q, rw);
return ELV_MQUEUE_MAY;
}
@ -792,7 +988,7 @@ static int elevator_switch(request_queue_t *q, struct elevator_type *new_e)
/*
* Allocate new elevator
*/
e = elevator_alloc(new_e);
e = elevator_alloc(q, new_e);
if (!e)
return 0;
@ -908,11 +1104,26 @@ ssize_t elv_iosched_show(request_queue_t *q, char *name)
return len;
}
EXPORT_SYMBOL(elv_dispatch_sort);
EXPORT_SYMBOL(elv_add_request);
EXPORT_SYMBOL(__elv_add_request);
EXPORT_SYMBOL(elv_next_request);
EXPORT_SYMBOL(elv_dequeue_request);
EXPORT_SYMBOL(elv_queue_empty);
EXPORT_SYMBOL(elevator_exit);
EXPORT_SYMBOL(elevator_init);
struct request *elv_rb_former_request(request_queue_t *q, struct request *rq)
{
struct rb_node *rbprev = rb_prev(&rq->rb_node);
if (rbprev)
return rb_entry_rq(rbprev);
return NULL;
}
EXPORT_SYMBOL(elv_rb_former_request);
struct request *elv_rb_latter_request(request_queue_t *q, struct request *rq)
{
struct rb_node *rbnext = rb_next(&rq->rb_node);
if (rbnext)
return rb_entry_rq(rbnext);
return NULL;
}
EXPORT_SYMBOL(elv_rb_latter_request);

236
block/ll_rw_blk.c
View File

@ -39,6 +39,7 @@ static void blk_unplug_timeout(unsigned long data);
static void drive_stat_acct(struct request *rq, int nr_sectors, int new_io);
static void init_request_from_bio(struct request *req, struct bio *bio);
static int __make_request(request_queue_t *q, struct bio *bio);
static struct io_context *current_io_context(gfp_t gfp_flags, int node);
/*
* For the allocated request tables
@ -277,19 +278,19 @@ void blk_queue_make_request(request_queue_t * q, make_request_fn * mfn)
EXPORT_SYMBOL(blk_queue_make_request);
static inline void rq_init(request_queue_t *q, struct request *rq)
static void rq_init(request_queue_t *q, struct request *rq)
{
INIT_LIST_HEAD(&rq->queuelist);
INIT_LIST_HEAD(&rq->donelist);
rq->errors = 0;
rq->rq_status = RQ_ACTIVE;
rq->bio = rq->biotail = NULL;
INIT_HLIST_NODE(&rq->hash);
RB_CLEAR_NODE(&rq->rb_node);
rq->ioprio = 0;
rq->buffer = NULL;
rq->ref_count = 1;
rq->q = q;
rq->waiting = NULL;
rq->special = NULL;
rq->data_len = 0;
rq->data = NULL;
@ -382,8 +383,8 @@ unsigned blk_ordered_req_seq(struct request *rq)
if (rq == &q->post_flush_rq)
return QUEUE_ORDSEQ_POSTFLUSH;
if ((rq->flags & REQ_ORDERED_COLOR) ==
(q->orig_bar_rq->flags & REQ_ORDERED_COLOR))
if ((rq->cmd_flags & REQ_ORDERED_COLOR) ==
(q->orig_bar_rq->cmd_flags & REQ_ORDERED_COLOR))
return QUEUE_ORDSEQ_DRAIN;
else
return QUEUE_ORDSEQ_DONE;
@ -446,11 +447,11 @@ static void queue_flush(request_queue_t *q, unsigned which)
end_io = post_flush_end_io;
}
rq->cmd_flags = REQ_HARDBARRIER;
rq_init(q, rq);
rq->flags = REQ_HARDBARRIER;
rq->elevator_private = NULL;
rq->elevator_private2 = NULL;
rq->rq_disk = q->bar_rq.rq_disk;
rq->rl = NULL;
rq->end_io = end_io;
q->prepare_flush_fn(q, rq);
@ -471,11 +472,13 @@ static inline struct request *start_ordered(request_queue_t *q,
blkdev_dequeue_request(rq);
q->orig_bar_rq = rq;
rq = &q->bar_rq;
rq->cmd_flags = 0;
rq_init(q, rq);
rq->flags = bio_data_dir(q->orig_bar_rq->bio);
rq->flags |= q->ordered & QUEUE_ORDERED_FUA ? REQ_FUA : 0;
if (bio_data_dir(q->orig_bar_rq->bio) == WRITE)
rq->cmd_flags |= REQ_RW;
rq->cmd_flags |= q->ordered & QUEUE_ORDERED_FUA ? REQ_FUA : 0;
rq->elevator_private = NULL;
rq->rl = NULL;
rq->elevator_private2 = NULL;
init_request_from_bio(rq, q->orig_bar_rq->bio);
rq->end_io = bar_end_io;
@ -587,8 +590,8 @@ static int flush_dry_bio_endio(struct bio *bio, unsigned int bytes, int error)
return 0;
}
static inline int ordered_bio_endio(struct request *rq, struct bio *bio,
unsigned int nbytes, int error)
static int ordered_bio_endio(struct request *rq, struct bio *bio,
unsigned int nbytes, int error)
{
request_queue_t *q = rq->q;
bio_end_io_t *endio;
@ -1124,7 +1127,7 @@ void blk_queue_end_tag(request_queue_t *q, struct request *rq)
}
list_del_init(&rq->queuelist);
rq->flags &= ~REQ_QUEUED;
rq->cmd_flags &= ~REQ_QUEUED;
rq->tag = -1;
if (unlikely(bqt->tag_index[tag] == NULL))
@ -1160,7 +1163,7 @@ int blk_queue_start_tag(request_queue_t *q, struct request *rq)
struct blk_queue_tag *bqt = q->queue_tags;
int tag;
if (unlikely((rq->flags & REQ_QUEUED))) {
if (unlikely((rq->cmd_flags & REQ_QUEUED))) {
printk(KERN_ERR
"%s: request %p for device [%s] already tagged %d",
__FUNCTION__, rq,
@ -1168,13 +1171,18 @@ int blk_queue_start_tag(request_queue_t *q, struct request *rq)
BUG();
}
tag = find_first_zero_bit(bqt->tag_map, bqt->max_depth);
if (tag >= bqt->max_depth)
return 1;
/*
* Protect against shared tag maps, as we may not have exclusive
* access to the tag map.
*/
do {
tag = find_first_zero_bit(bqt->tag_map, bqt->max_depth);
if (tag >= bqt->max_depth)
return 1;
__set_bit(tag, bqt->tag_map);
} while (test_and_set_bit(tag, bqt->tag_map));
rq->flags |= REQ_QUEUED;
rq->cmd_flags |= REQ_QUEUED;
rq->tag = tag;
bqt->tag_index[tag] = rq;
blkdev_dequeue_request(rq);
@ -1210,65 +1218,31 @@ void blk_queue_invalidate_tags(request_queue_t *q)
printk(KERN_ERR
"%s: bad tag found on list\n", __FUNCTION__);
list_del_init(&rq->queuelist);
rq->flags &= ~REQ_QUEUED;
rq->cmd_flags &= ~REQ_QUEUED;
} else
blk_queue_end_tag(q, rq);
rq->flags &= ~REQ_STARTED;
rq->cmd_flags &= ~REQ_STARTED;
__elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 0);
}
}
EXPORT_SYMBOL(blk_queue_invalidate_tags);
static const char * const rq_flags[] = {
"REQ_RW",
"REQ_FAILFAST",
"REQ_SORTED",
"REQ_SOFTBARRIER",
"REQ_HARDBARRIER",
"REQ_FUA",
"REQ_CMD",
"REQ_NOMERGE",
"REQ_STARTED",
"REQ_DONTPREP",
"REQ_QUEUED",
"REQ_ELVPRIV",
"REQ_PC",
"REQ_BLOCK_PC",
"REQ_SENSE",
"REQ_FAILED",
"REQ_QUIET",
"REQ_SPECIAL",
"REQ_DRIVE_CMD",
"REQ_DRIVE_TASK",
"REQ_DRIVE_TASKFILE",
"REQ_PREEMPT",
"REQ_PM_SUSPEND",
"REQ_PM_RESUME",
"REQ_PM_SHUTDOWN",
"REQ_ORDERED_COLOR",
};
void blk_dump_rq_flags(struct request *rq, char *msg)
{
int bit;
printk("%s: dev %s: flags = ", msg,
rq->rq_disk ? rq->rq_disk->disk_name : "?");
bit = 0;
do {
if (rq->flags & (1 << bit))
printk("%s ", rq_flags[bit]);
bit++;
} while (bit < __REQ_NR_BITS);
printk("%s: dev %s: type=%x, flags=%x\n", msg,
rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->cmd_type,
rq->cmd_flags);
printk("\nsector %llu, nr/cnr %lu/%u\n", (unsigned long long)rq->sector,
rq->nr_sectors,
rq->current_nr_sectors);
printk("bio %p, biotail %p, buffer %p, data %p, len %u\n", rq->bio, rq->biotail, rq->buffer, rq->data, rq->data_len);
if (rq->flags & (REQ_BLOCK_PC | REQ_PC)) {
if (blk_pc_request(rq)) {
printk("cdb: ");
for (bit = 0; bit < sizeof(rq->cmd); bit++)
printk("%02x ", rq->cmd[bit]);
@ -1441,7 +1415,7 @@ static inline int ll_new_mergeable(request_queue_t *q,
int nr_phys_segs = bio_phys_segments(q, bio);
if (req->nr_phys_segments + nr_phys_segs > q->max_phys_segments) {
req->flags |= REQ_NOMERGE;
req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
@ -1464,7 +1438,7 @@ static inline int ll_new_hw_segment(request_queue_t *q,
if (req->nr_hw_segments + nr_hw_segs > q->max_hw_segments
|| req->nr_phys_segments + nr_phys_segs > q->max_phys_segments) {
req->flags |= REQ_NOMERGE;
req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
@ -1491,7 +1465,7 @@ static int ll_back_merge_fn(request_queue_t *q, struct request *req,
max_sectors = q->max_sectors;
if (req->nr_sectors + bio_sectors(bio) > max_sectors) {
req->flags |= REQ_NOMERGE;
req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
@ -1530,7 +1504,7 @@ static int ll_front_merge_fn(request_queue_t *q, struct request *req,
if (req->nr_sectors + bio_sectors(bio) > max_sectors) {
req->flags |= REQ_NOMERGE;
req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
@ -2029,14 +2003,13 @@ EXPORT_SYMBOL(blk_get_queue);
static inline void blk_free_request(request_queue_t *q, struct request *rq)
{
if (rq->flags & REQ_ELVPRIV)
if (rq->cmd_flags & REQ_ELVPRIV)
elv_put_request(q, rq);
mempool_free(rq, q->rq.rq_pool);
}
static inline struct request *
blk_alloc_request(request_queue_t *q, int rw, struct bio *bio,
int priv, gfp_t gfp_mask)
static struct request *
blk_alloc_request(request_queue_t *q, int rw, int priv, gfp_t gfp_mask)
{
struct request *rq = mempool_alloc(q->rq.rq_pool, gfp_mask);
@ -2044,17 +2017,17 @@ blk_alloc_request(request_queue_t *q, int rw, struct bio *bio,
return NULL;
/*
* first three bits are identical in rq->flags and bio->bi_rw,
* first three bits are identical in rq->cmd_flags and bio->bi_rw,
* see bio.h and blkdev.h
*/
rq->flags = rw;
rq->cmd_flags = rw | REQ_ALLOCED;
if (priv) {
if (unlikely(elv_set_request(q, rq, bio, gfp_mask))) {
if (unlikely(elv_set_request(q, rq, gfp_mask))) {
mempool_free(rq, q->rq.rq_pool);
return NULL;
}
rq->flags |= REQ_ELVPRIV;
rq->cmd_flags |= REQ_ELVPRIV;
}
return rq;
@ -2141,13 +2114,13 @@ static struct request *get_request(request_queue_t *q, int rw, struct bio *bio,
struct io_context *ioc = NULL;
int may_queue, priv;
may_queue = elv_may_queue(q, rw, bio);
may_queue = elv_may_queue(q, rw);
if (may_queue == ELV_MQUEUE_NO)
goto rq_starved;
if (rl->count[rw]+1 >= queue_congestion_on_threshold(q)) {
if (rl->count[rw]+1 >= q->nr_requests) {
ioc = current_io_context(GFP_ATOMIC);
ioc = current_io_context(GFP_ATOMIC, q->node);
/*
* The queue will fill after this allocation, so set
* it as full, and mark this process as "batching".
@ -2189,7 +2162,7 @@ static struct request *get_request(request_queue_t *q, int rw, struct bio *bio,
spin_unlock_irq(q->queue_lock);
rq = blk_alloc_request(q, rw, bio, priv, gfp_mask);
rq = blk_alloc_request(q, rw, priv, gfp_mask);
if (unlikely(!rq)) {
/*
* Allocation failed presumably due to memory. Undo anything
@ -2225,7 +2198,6 @@ rq_starved:
ioc->nr_batch_requests--;
rq_init(q, rq);
rq->rl = rl;
blk_add_trace_generic(q, bio, rw, BLK_TA_GETRQ);
out:
@ -2268,7 +2240,7 @@ static struct request *get_request_wait(request_queue_t *q, int rw,
* up to a big batch of them for a small period time.
* See ioc_batching, ioc_set_batching
*/
ioc = current_io_context(GFP_NOIO);
ioc = current_io_context(GFP_NOIO, q->node);
ioc_set_batching(q, ioc);
spin_lock_irq(q->queue_lock);
@ -2299,6 +2271,25 @@ struct request *blk_get_request(request_queue_t *q, int rw, gfp_t gfp_mask)
}
EXPORT_SYMBOL(blk_get_request);
/**
* blk_start_queueing - initiate dispatch of requests to device
* @q: request queue to kick into gear
*
* This is basically a helper to remove the need to know whether a queue
* is plugged or not if someone just wants to initiate dispatch of requests
* for this queue.
*
* The queue lock must be held with interrupts disabled.
*/
void blk_start_queueing(request_queue_t *q)
{
if (!blk_queue_plugged(q))
q->request_fn(q);
else
__generic_unplug_device(q);
}
EXPORT_SYMBOL(blk_start_queueing);
/**
* blk_requeue_request - put a request back on queue
* @q: request queue where request should be inserted
@ -2351,7 +2342,8 @@ void blk_insert_request(request_queue_t *q, struct request *rq,
* must not attempt merges on this) and that it acts as a soft
* barrier
*/
rq->flags |= REQ_SPECIAL | REQ_SOFTBARRIER;
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd_flags |= REQ_SOFTBARRIER;
rq->special = data;
@ -2365,11 +2357,7 @@ void blk_insert_request(request_queue_t *q, struct request *rq,
drive_stat_acct(rq, rq->nr_sectors, 1);
__elv_add_request(q, rq, where, 0);
if (blk_queue_plugged(q))
__generic_unplug_device(q);
else
q->request_fn(q);
blk_start_queueing(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
@ -2558,7 +2546,7 @@ void blk_execute_rq_nowait(request_queue_t *q, struct gendisk *bd_disk,
int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
rq->rq_disk = bd_disk;
rq->flags |= REQ_NOMERGE;
rq->cmd_flags |= REQ_NOMERGE;
rq->end_io = done;
WARN_ON(irqs_disabled());
spin_lock_irq(q->queue_lock);
@ -2598,10 +2586,9 @@ int blk_execute_rq(request_queue_t *q, struct gendisk *bd_disk,
rq->sense_len = 0;
}
rq->waiting = &wait;
rq->end_io_data = &wait;
blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq);
wait_for_completion(&wait);
rq->waiting = NULL;
if (rq->errors)
err = -EIO;
@ -2710,8 +2697,6 @@ EXPORT_SYMBOL_GPL(disk_round_stats);
*/
void __blk_put_request(request_queue_t *q, struct request *req)
{
struct request_list *rl = req->rl;
if (unlikely(!q))
return;
if (unlikely(--req->ref_count))
@ -2719,18 +2704,16 @@ void __blk_put_request(request_queue_t *q, struct request *req)
elv_completed_request(q, req);
req->rq_status = RQ_INACTIVE;
req->rl = NULL;
/*
* Request may not have originated from ll_rw_blk. if not,
* it didn't come out of our reserved rq pools
*/
if (rl) {
if (req->cmd_flags & REQ_ALLOCED) {
int rw = rq_data_dir(req);
int priv = req->flags & REQ_ELVPRIV;
int priv = req->cmd_flags & REQ_ELVPRIV;
BUG_ON(!list_empty(&req->queuelist));
BUG_ON(!hlist_unhashed(&req->hash));
blk_free_request(q, req);
freed_request(q, rw, priv);
@ -2764,9 +2747,9 @@ EXPORT_SYMBOL(blk_put_request);
*/
void blk_end_sync_rq(struct request *rq, int error)
{
struct completion *waiting = rq->waiting;
struct completion *waiting = rq->end_io_data;
rq->waiting = NULL;
rq->end_io_data = NULL;
__blk_put_request(rq->q, rq);
/*
@ -2829,7 +2812,7 @@ static int attempt_merge(request_queue_t *q, struct request *req,
if (rq_data_dir(req) != rq_data_dir(next)
|| req->rq_disk != next->rq_disk
|| next->waiting || next->special)
|| next->special)
return 0;
/*
@ -2890,22 +2873,24 @@ static inline int attempt_front_merge(request_queue_t *q, struct request *rq)
static void init_request_from_bio(struct request *req, struct bio *bio)
{
req->flags |= REQ_CMD;
req->cmd_type = REQ_TYPE_FS;
/*
* inherit FAILFAST from bio (for read-ahead, and explicit FAILFAST)
*/
if (bio_rw_ahead(bio) || bio_failfast(bio))
req->flags |= REQ_FAILFAST;
req->cmd_flags |= REQ_FAILFAST;
/*
* REQ_BARRIER implies no merging, but lets make it explicit
*/
if (unlikely(bio_barrier(bio)))
req->flags |= (REQ_HARDBARRIER | REQ_NOMERGE);
req->cmd_flags |= (REQ_HARDBARRIER | REQ_NOMERGE);
if (bio_sync(bio))
req->flags |= REQ_RW_SYNC;
req->cmd_flags |= REQ_RW_SYNC;
if (bio_rw_meta(bio))
req->cmd_flags |= REQ_RW_META;
req->errors = 0;
req->hard_sector = req->sector = bio->bi_sector;
@ -2914,7 +2899,6 @@ static void init_request_from_bio(struct request *req, struct bio *bio)
req->nr_phys_segments = bio_phys_segments(req->q, bio);
req->nr_hw_segments = bio_hw_segments(req->q, bio);
req->buffer = bio_data(bio); /* see ->buffer comment above */
req->waiting = NULL;
req->bio = req->biotail = bio;
req->ioprio = bio_prio(bio);
req->rq_disk = bio->bi_bdev->bd_disk;
@ -2924,17 +2908,11 @@ static void init_request_from_bio(struct request *req, struct bio *bio)
static int __make_request(request_queue_t *q, struct bio *bio)
{
struct request *req;
int el_ret, rw, nr_sectors, cur_nr_sectors, barrier, err, sync;
unsigned short prio;
sector_t sector;
int el_ret, nr_sectors, barrier, err;
const unsigned short prio = bio_prio(bio);
const int sync = bio_sync(bio);
sector = bio->bi_sector;
nr_sectors = bio_sectors(bio);
cur_nr_sectors = bio_cur_sectors(bio);
prio = bio_prio(bio);
rw = bio_data_dir(bio);
sync = bio_sync(bio);
/*
* low level driver can indicate that it wants pages above a
@ -2943,8 +2921,6 @@ static int __make_request(request_queue_t *q, struct bio *bio)
*/
blk_queue_bounce(q, &bio);
spin_lock_prefetch(q->queue_lock);
barrier = bio_barrier(bio);
if (unlikely(barrier) && (q->next_ordered == QUEUE_ORDERED_NONE)) {
err = -EOPNOTSUPP;
@ -2972,7 +2948,7 @@ static int __make_request(request_queue_t *q, struct bio *bio)
req->ioprio = ioprio_best(req->ioprio, prio);
drive_stat_acct(req, nr_sectors, 0);
if (!attempt_back_merge(q, req))
elv_merged_request(q, req);
elv_merged_request(q, req, el_ret);
goto out;
case ELEVATOR_FRONT_MERGE:
@ -2992,14 +2968,14 @@ static int __make_request(request_queue_t *q, struct bio *bio)
* not touch req->buffer either...
*/
req->buffer = bio_data(bio);
req->current_nr_sectors = cur_nr_sectors;
req->hard_cur_sectors = cur_nr_sectors;
req->sector = req->hard_sector = sector;
req->current_nr_sectors = bio_cur_sectors(bio);
req->hard_cur_sectors = req->current_nr_sectors;
req->sector = req->hard_sector = bio->bi_sector;
req->nr_sectors = req->hard_nr_sectors += nr_sectors;
req->ioprio = ioprio_best(req->ioprio, prio);
drive_stat_acct(req, nr_sectors, 0);
if (!attempt_front_merge(q, req))
elv_merged_request(q, req);
elv_merged_request(q, req, el_ret);
goto out;
/* ELV_NO_MERGE: elevator says don't/can't merge. */
@ -3012,7 +2988,7 @@ get_rq:
* Grab a free request. This is might sleep but can not fail.
* Returns with the queue unlocked.
*/
req = get_request_wait(q, rw, bio);
req = get_request_wait(q, bio_data_dir(bio), bio);
/*
* After dropping the lock and possibly sleeping here, our request
@ -3306,7 +3282,7 @@ static int __end_that_request_first(struct request *req, int uptodate,
req->errors = 0;
if (!uptodate) {
if (blk_fs_request(req) && !(req->flags & REQ_QUIET))
if (blk_fs_request(req) && !(req->cmd_flags & REQ_QUIET))
printk("end_request: I/O error, dev %s, sector %llu\n",
req->rq_disk ? req->rq_disk->disk_name : "?",
(unsigned long long)req->sector);
@ -3569,8 +3545,8 @@ EXPORT_SYMBOL(end_request);
void blk_rq_bio_prep(request_queue_t *q, struct request *rq, struct bio *bio)
{
/* first two bits are identical in rq->flags and bio->bi_rw */
rq->flags |= (bio->bi_rw & 3);
/* first two bits are identical in rq->cmd_flags and bio->bi_rw */
rq->cmd_flags |= (bio->bi_rw & 3);
rq->nr_phys_segments = bio_phys_segments(q, bio);
rq->nr_hw_segments = bio_hw_segments(q, bio);
@ -3658,25 +3634,22 @@ EXPORT_SYMBOL(put_io_context);
/* Called by the exitting task */
void exit_io_context(void)
{
unsigned long flags;
struct io_context *ioc;
struct cfq_io_context *cic;
local_irq_save(flags);
task_lock(current);
ioc = current->io_context;
current->io_context = NULL;
ioc->task = NULL;
task_unlock(current);
local_irq_restore(flags);
ioc->task = NULL;
if (ioc->aic && ioc->aic->exit)
ioc->aic->exit(ioc->aic);
if (ioc->cic_root.rb_node != NULL) {
cic = rb_entry(rb_first(&ioc->cic_root), struct cfq_io_context, rb_node);
cic->exit(ioc);
}
put_io_context(ioc);
}
@ -3688,7 +3661,7 @@ void exit_io_context(void)
* but since the current task itself holds a reference, the context can be
* used in general code, so long as it stays within `current` context.
*/
struct io_context *current_io_context(gfp_t gfp_flags)
static struct io_context *current_io_context(gfp_t gfp_flags, int node)
{
struct task_struct *tsk = current;
struct io_context *ret;
@ -3697,11 +3670,11 @@ struct io_context *current_io_context(gfp_t gfp_flags)
if (likely(ret))
return ret;
ret = kmem_cache_alloc(iocontext_cachep, gfp_flags);
ret = kmem_cache_alloc_node(iocontext_cachep, gfp_flags, node);
if (ret) {
atomic_set(&ret->refcount, 1);
ret->task = current;
ret->set_ioprio = NULL;
ret->ioprio_changed = 0;
ret->last_waited = jiffies; /* doesn't matter... */
ret->nr_batch_requests = 0; /* because this is 0 */
ret->aic = NULL;
@ -3721,10 +3694,10 @@ EXPORT_SYMBOL(current_io_context);
*
* This is always called in the context of the task which submitted the I/O.
*/
struct io_context *get_io_context(gfp_t gfp_flags)
struct io_context *get_io_context(gfp_t gfp_flags, int node)
{
struct io_context *ret;
ret = current_io_context(gfp_flags);
ret = current_io_context(gfp_flags, node);
if (likely(ret))
atomic_inc(&ret->refcount);
return ret;
@ -3837,9 +3810,6 @@ queue_ra_store(struct request_queue *q, const char *page, size_t count)
ssize_t ret = queue_var_store(&ra_kb, page, count);
spin_lock_irq(q->queue_lock);
if (ra_kb > (q->max_sectors >> 1))
ra_kb = (q->max_sectors >> 1);
q->backing_dev_info.ra_pages = ra_kb >> (PAGE_CACHE_SHIFT - 10);
spin_unlock_irq(q->queue_lock);

2
block/noop-iosched.c
View File

@ -69,7 +69,7 @@ static void *noop_init_queue(request_queue_t *q, elevator_t *e)
{
struct noop_data *nd;
nd = kmalloc(sizeof(*nd), GFP_KERNEL);
nd = kmalloc_node(sizeof(*nd), GFP_KERNEL, q->node);
if (!nd)
return NULL;
INIT_LIST_HEAD(&nd->queue);

6
block/scsi_ioctl.c
View File

@ -294,7 +294,7 @@ static int sg_io(struct file *file, request_queue_t *q,
rq->sense = sense;
rq->sense_len = 0;
rq->flags |= REQ_BLOCK_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
bio = rq->bio;
/*
@ -470,7 +470,7 @@ int sg_scsi_ioctl(struct file *file, struct request_queue *q,
memset(sense, 0, sizeof(sense));
rq->sense = sense;
rq->sense_len = 0;
rq->flags |= REQ_BLOCK_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
blk_execute_rq(q, disk, rq, 0);
@ -502,7 +502,7 @@ static int __blk_send_generic(request_queue_t *q, struct gendisk *bd_disk, int c
int err;
rq = blk_get_request(q, WRITE, __GFP_WAIT);
rq->flags |= REQ_BLOCK_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->data = NULL;
rq->data_len = 0;
rq->timeout = BLK_DEFAULT_TIMEOUT;

2
drivers/block/DAC960.c
View File

@ -3331,7 +3331,7 @@ static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_
Command->DmaDirection = PCI_DMA_TODEVICE;
Command->CommandType = DAC960_WriteCommand;
}
Command->Completion = Request->waiting;
Command->Completion = Request->end_io_data;
Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
Command->BlockNumber = Request->sector;
Command->BlockCount = Request->nr_sectors;

4
drivers/block/Kconfig
View File

@ -2,6 +2,8 @@
# Block device driver configuration
#
if BLOCK
menu "Block devices"
config BLK_DEV_FD
@ -468,3 +470,5 @@ config ATA_OVER_ETH
devices like the Coraid EtherDrive (R) Storage Blade.
endmenu
endif

1
drivers/block/cciss.c
View File

@ -1229,7 +1229,6 @@ static inline void complete_buffers(struct bio *bio, int status)
int nr_sectors = bio_sectors(bio);
bio->bi_next = NULL;
blk_finished_io(len);
bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
bio = xbh;
}

1
drivers/block/cpqarray.c
View File

@ -989,7 +989,6 @@ static inline void complete_buffers(struct bio *bio, int ok)
xbh = bio->bi_next;
bio->bi_next = NULL;
blk_finished_io(nr_sectors);
bio_endio(bio, nr_sectors << 9, ok ? 0 : -EIO);
bio = xbh;

4
drivers/block/floppy.c
View File

@ -2991,8 +2991,8 @@ static void do_fd_request(request_queue_t * q)
if (usage_count == 0) {
printk("warning: usage count=0, current_req=%p exiting\n",
current_req);
printk("sect=%ld flags=%lx\n", (long)current_req->sector,
current_req->flags);
printk("sect=%ld type=%x flags=%x\n", (long)current_req->sector,
current_req->cmd_type, current_req->cmd_flags);
return;
}
if (test_bit(0, &fdc_busy)) {

160
drivers/block/loop.c
View File

@ -66,6 +66,7 @@
#include <linux/swap.h>
#include <linux/slab.h>
#include <linux/loop.h>
#include <linux/compat.h>
#include <linux/suspend.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h> /* for invalidate_bdev() */
@ -1165,6 +1166,162 @@ static int lo_ioctl(struct inode * inode, struct file * file,
return err;
}
#ifdef CONFIG_COMPAT
struct compat_loop_info {
compat_int_t lo_number; /* ioctl r/o */
compat_dev_t lo_device; /* ioctl r/o */
compat_ulong_t lo_inode; /* ioctl r/o */
compat_dev_t lo_rdevice; /* ioctl r/o */
compat_int_t lo_offset;
compat_int_t lo_encrypt_type;
compat_int_t lo_encrypt_key_size; /* ioctl w/o */
compat_int_t lo_flags; /* ioctl r/o */
char lo_name[LO_NAME_SIZE];
unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
compat_ulong_t lo_init[2];
char reserved[4];
};
/*
* Transfer 32-bit compatibility structure in userspace to 64-bit loop info
* - noinlined to reduce stack space usage in main part of driver
*/
static noinline int
loop_info64_from_compat(const struct compat_loop_info *arg,
struct loop_info64 *info64)
{
struct compat_loop_info info;
if (copy_from_user(&info, arg, sizeof(info)))
return -EFAULT;
memset(info64, 0, sizeof(*info64));
info64->lo_number = info.lo_number;
info64->lo_device = info.lo_device;
info64->lo_inode = info.lo_inode;
info64->lo_rdevice = info.lo_rdevice;
info64->lo_offset = info.lo_offset;
info64->lo_sizelimit = 0;
info64->lo_encrypt_type = info.lo_encrypt_type;
info64->lo_encrypt_key_size = info.lo_encrypt_key_size;
info64->lo_flags = info.lo_flags;
info64->lo_init[0] = info.lo_init[0];
info64->lo_init[1] = info.lo_init[1];
if (info.lo_encrypt_type == LO_CRYPT_CRYPTOAPI)
memcpy(info64->lo_crypt_name, info.lo_name, LO_NAME_SIZE);
else
memcpy(info64->lo_file_name, info.lo_name, LO_NAME_SIZE);
memcpy(info64->lo_encrypt_key, info.lo_encrypt_key, LO_KEY_SIZE);
return 0;
}
/*
* Transfer 64-bit loop info to 32-bit compatibility structure in userspace
* - noinlined to reduce stack space usage in main part of driver
*/
static noinline int
loop_info64_to_compat(const struct loop_info64 *info64,
struct compat_loop_info __user *arg)
{
struct compat_loop_info info;
memset(&info, 0, sizeof(info));
info.lo_number = info64->lo_number;
info.lo_device = info64->lo_device;
info.lo_inode = info64->lo_inode;
info.lo_rdevice = info64->lo_rdevice;
info.lo_offset = info64->lo_offset;
info.lo_encrypt_type = info64->lo_encrypt_type;
info.lo_encrypt_key_size = info64->lo_encrypt_key_size;
info.lo_flags = info64->lo_flags;
info.lo_init[0] = info64->lo_init[0];
info.lo_init[1] = info64->lo_init[1];
if (info.lo_encrypt_type == LO_CRYPT_CRYPTOAPI)
memcpy(info.lo_name, info64->lo_crypt_name, LO_NAME_SIZE);
else
memcpy(info.lo_name, info64->lo_file_name, LO_NAME_SIZE);
memcpy(info.lo_encrypt_key, info64->lo_encrypt_key, LO_KEY_SIZE);
/* error in case values were truncated */
if (info.lo_device != info64->lo_device ||
info.lo_rdevice != info64->lo_rdevice ||
info.lo_inode != info64->lo_inode ||
info.lo_offset != info64->lo_offset ||
info.lo_init[0] != info64->lo_init[0] ||
info.lo_init[1] != info64->lo_init[1])
return -EOVERFLOW;
if (copy_to_user(arg, &info, sizeof(info)))
return -EFAULT;
return 0;
}
static int
loop_set_status_compat(struct loop_device *lo,
const struct compat_loop_info __user *arg)
{
struct loop_info64 info64;
int ret;
ret = loop_info64_from_compat(arg, &info64);
if (ret < 0)
return ret;
return loop_set_status(lo, &info64);
}
static int
loop_get_status_compat(struct loop_device *lo,
struct compat_loop_info __user *arg)
{
struct loop_info64 info64;
int err = 0;
if (!arg)
err = -EINVAL;
if (!err)
err = loop_get_status(lo, &info64);
if (!err)
err = loop_info64_to_compat(&info64, arg);
return err;
}
static long lo_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file->f_dentry->d_inode;
struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
int err;
lock_kernel();
switch(cmd) {
case LOOP_SET_STATUS:
mutex_lock(&lo->lo_ctl_mutex);
err = loop_set_status_compat(
lo, (const struct compat_loop_info __user *) arg);
mutex_unlock(&lo->lo_ctl_mutex);
break;
case LOOP_GET_STATUS:
mutex_lock(&lo->lo_ctl_mutex);
err = loop_get_status_compat(
lo, (struct compat_loop_info __user *) arg);
mutex_unlock(&lo->lo_ctl_mutex);
break;
case LOOP_CLR_FD:
case LOOP_GET_STATUS64:
case LOOP_SET_STATUS64:
arg = (unsigned long) compat_ptr(arg);
case LOOP_SET_FD:
case LOOP_CHANGE_FD:
err = lo_ioctl(inode, file, cmd, arg);
break;
default:
err = -ENOIOCTLCMD;
break;
}
unlock_kernel();
return err;
}
#endif
static int lo_open(struct inode *inode, struct file *file)
{
struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
@ -1192,6 +1349,9 @@ static struct block_device_operations lo_fops = {
.open = lo_open,
.release = lo_release,
.ioctl = lo_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = lo_compat_ioctl,
#endif
};
/*

8
drivers/block/nbd.c
View File

@ -407,10 +407,10 @@ static void do_nbd_request(request_queue_t * q)
struct nbd_device *lo;
blkdev_dequeue_request(req);
dprintk(DBG_BLKDEV, "%s: request %p: dequeued (flags=%lx)\n",
req->rq_disk->disk_name, req, req->flags);
dprintk(DBG_BLKDEV, "%s: request %p: dequeued (flags=%x)\n",
req->rq_disk->disk_name, req, req->cmd_type);
if (!(req->flags & REQ_CMD))
if (!blk_fs_request(req))
goto error_out;
lo = req->rq_disk->private_data;
@ -489,7 +489,7 @@ static int nbd_ioctl(struct inode *inode, struct file *file,
switch (cmd) {
case NBD_DISCONNECT:
printk(KERN_INFO "%s: NBD_DISCONNECT\n", lo->disk->disk_name);
sreq.flags = REQ_SPECIAL;
sreq.cmd_type = REQ_TYPE_SPECIAL;
nbd_cmd(&sreq) = NBD_CMD_DISC;
/*
* Set these to sane values in case server implementation

6
drivers/block/paride/pd.c
View File

@ -437,7 +437,7 @@ static char *pd_buf; /* buffer for request in progress */
static enum action do_pd_io_start(void)
{
if (pd_req->flags & REQ_SPECIAL) {
if (blk_special_request(pd_req)) {
phase = pd_special;
return pd_special();
}
@ -719,14 +719,12 @@ static int pd_special_command(struct pd_unit *disk,
memset(&rq, 0, sizeof(rq));
rq.errors = 0;
rq.rq_status = RQ_ACTIVE;
rq.rq_disk = disk->gd;
rq.ref_count = 1;
rq.waiting = &wait;
rq.end_io_data = &wait;
rq.end_io = blk_end_sync_rq;
blk_insert_request(disk->gd->queue, &rq, 0, func);
wait_for_completion(&wait);
rq.waiting = NULL;
if (rq.errors)
err = -EIO;
blk_put_request(&rq);

8
drivers/block/pktcdvd.c
View File

@ -365,17 +365,17 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
rq->sense = sense;
memset(sense, 0, sizeof(sense));
rq->sense_len = 0;
rq->flags |= REQ_BLOCK_PC | REQ_HARDBARRIER;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->cmd_flags |= REQ_HARDBARRIER;
if (cgc->quiet)
rq->flags |= REQ_QUIET;
rq->cmd_flags |= REQ_QUIET;
memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
if (sizeof(rq->cmd) > CDROM_PACKET_SIZE)
memset(rq->cmd + CDROM_PACKET_SIZE, 0, sizeof(rq->cmd) - CDROM_PACKET_SIZE);
rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
rq->ref_count++;
rq->flags |= REQ_NOMERGE;
rq->waiting = &wait;
rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 1);
generic_unplug_device(q);

4
drivers/block/swim3.c
View File

@ -319,8 +319,8 @@ static void start_request(struct floppy_state *fs)
printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n",
req->rq_disk->disk_name, req->cmd,
(long)req->sector, req->nr_sectors, req->buffer);
printk(" rq_status=%d errors=%d current_nr_sectors=%ld\n",
req->rq_status, req->errors, req->current_nr_sectors);
printk(" errors=%d current_nr_sectors=%ld\n",
req->errors, req->current_nr_sectors);
#endif
if (req->sector < 0 || req->sector >= fs->total_secs) {

4
drivers/block/swim_iop.c
View File

@ -529,8 +529,8 @@ static void start_request(struct floppy_state *fs)
printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n",
CURRENT->rq_disk->disk_name, CURRENT->cmd,
CURRENT->sector, CURRENT->nr_sectors, CURRENT->buffer);
printk(" rq_status=%d errors=%d current_nr_sectors=%ld\n",
CURRENT->rq_status, CURRENT->errors, CURRENT->current_nr_sectors);
printk(" errors=%d current_nr_sectors=%ld\n",
CURRENT->errors, CURRENT->current_nr_sectors);
#endif
if (CURRENT->sector < 0 || CURRENT->sector >= fs->total_secs) {

2
drivers/block/xd.c
View File

@ -313,7 +313,7 @@ static void do_xd_request (request_queue_t * q)
int res = 0;
int retry;
if (!(req->flags & REQ_CMD)) {
if (!blk_fs_request(req)) {
end_request(req, 0);
continue;
}

2
drivers/cdrom/Kconfig
View File

@ -3,7 +3,7 @@
#
menu "Old CD-ROM drivers (not SCSI, not IDE)"
depends on ISA
depends on ISA && BLOCK
config CD_NO_IDESCSI
bool "Support non-SCSI/IDE/ATAPI CDROM drives"

2
drivers/cdrom/cdrom.c
View File

@ -2129,7 +2129,7 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
rq->cmd[9] = 0xf8;
rq->cmd_len = 12;
rq->flags |= REQ_BLOCK_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->timeout = 60 * HZ;
bio = rq->bio;

4
drivers/cdrom/cdu31a.c
View File

@ -1338,8 +1338,10 @@ static void do_cdu31a_request(request_queue_t * q)
}
/* WTF??? */
if (!(req->flags & REQ_CMD))
if (!blk_fs_request(req)) {
end_request(req, 0);
continue;
}
if (rq_data_dir(req) == WRITE) {
end_request(req, 0);
continue;

1
drivers/char/Kconfig
View File

@ -1006,6 +1006,7 @@ config GPIO_VR41XX
config RAW_DRIVER
tristate "RAW driver (/dev/raw/rawN) (OBSOLETE)"
depends on BLOCK
help
The raw driver permits block devices to be bound to /dev/raw/rawN.
Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.

4
drivers/char/random.c
View File

@ -655,6 +655,7 @@ void add_interrupt_randomness(int irq)
add_timer_randomness(irq_timer_state[irq], 0x100 + irq);
}
#ifdef CONFIG_BLOCK
void add_disk_randomness(struct gendisk *disk)
{
if (!disk || !disk->random)
@ -667,6 +668,7 @@ void add_disk_randomness(struct gendisk *disk)
}
EXPORT_SYMBOL(add_disk_randomness);
#endif
#define EXTRACT_SIZE 10
@ -918,6 +920,7 @@ void rand_initialize_irq(int irq)
}
}
#ifdef CONFIG_BLOCK
void rand_initialize_disk(struct gendisk *disk)
{
struct timer_rand_state *state;
@ -932,6 +935,7 @@ void rand_initialize_disk(struct gendisk *disk)
disk->random = state;
}
}
#endif
static ssize_t
random_read(struct file * file, char __user * buf, size_t nbytes, loff_t *ppos)

1
drivers/fc4/fc.c
View File

@ -974,7 +974,6 @@ int fcp_scsi_dev_reset(Scsi_Cmnd *SCpnt)
*/
fc->rst_pkt->device->host->eh_action = &sem;
fc->rst_pkt->request->rq_status = RQ_SCSI_BUSY;
fc->rst_pkt->done = fcp_scsi_reset_done;

4
drivers/ide/Kconfig
View File

@ -4,6 +4,8 @@
# Andre Hedrick <andre@linux-ide.org>
#
if BLOCK
menu "ATA/ATAPI/MFM/RLL support"
config IDE
@ -1082,3 +1084,5 @@ config BLK_DEV_HD
endif
endmenu
endif

69
drivers/ide/ide-cd.c
View File

@ -372,7 +372,7 @@ static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
{
int log = 0;
if (!sense || !rq || (rq->flags & REQ_QUIET))
if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
return 0;
switch (sense->sense_key) {
@ -597,7 +597,7 @@ static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq)
struct cdrom_info *cd = drive->driver_data;
ide_init_drive_cmd(rq);
rq->flags = REQ_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->rq_disk = cd->disk;
}
@ -617,7 +617,7 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
rq->cmd[0] = GPCMD_REQUEST_SENSE;
rq->cmd[4] = rq->data_len = 18;
rq->flags = REQ_SENSE;
rq->cmd_type = REQ_TYPE_SENSE;
/* NOTE! Save the failed command in "rq->buffer" */
rq->buffer = (void *) failed_command;
@ -630,10 +630,10 @@ static void cdrom_end_request (ide_drive_t *drive, int uptodate)
struct request *rq = HWGROUP(drive)->rq;
int nsectors = rq->hard_cur_sectors;
if ((rq->flags & REQ_SENSE) && uptodate) {
if (blk_sense_request(rq) && uptodate) {
/*
* For REQ_SENSE, "rq->buffer" points to the original failed
* request
* For REQ_TYPE_SENSE, "rq->buffer" points to the original
* failed request
*/
struct request *failed = (struct request *) rq->buffer;
struct cdrom_info *info = drive->driver_data;
@ -706,17 +706,17 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
return 1;
}
if (rq->flags & REQ_SENSE) {
if (blk_sense_request(rq)) {
/* We got an error trying to get sense info
from the drive (probably while trying
to recover from a former error). Just give up. */
rq->flags |= REQ_FAILED;
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
ide_error(drive, "request sense failure", stat);
return 1;
} else if (rq->flags & (REQ_PC | REQ_BLOCK_PC)) {
} else if (blk_pc_request(rq)) {
/* All other functions, except for READ. */
unsigned long flags;
@ -724,7 +724,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
* if we have an error, pass back CHECK_CONDITION as the
* scsi status byte
*/
if ((rq->flags & REQ_BLOCK_PC) && !rq->errors)
if (!rq->errors)
rq->errors = SAM_STAT_CHECK_CONDITION;
/* Check for tray open. */
@ -735,12 +735,12 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
cdrom_saw_media_change (drive);
/*printk("%s: media changed\n",drive->name);*/
return 0;
} else if (!(rq->flags & REQ_QUIET)) {
} else if (!(rq->cmd_flags & REQ_QUIET)) {
/* Otherwise, print an error. */
ide_dump_status(drive, "packet command error", stat);
}
rq->flags |= REQ_FAILED;
rq->cmd_flags |= REQ_FAILED;
/*
* instead of playing games with moving completions around,
@ -881,7 +881,7 @@ static int cdrom_timer_expiry(ide_drive_t *drive)
wait = ATAPI_WAIT_PC;
break;
default:
if (!(rq->flags & REQ_QUIET))
if (!(rq->cmd_flags & REQ_QUIET))
printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]);
wait = 0;
break;
@ -1124,7 +1124,7 @@ static ide_startstop_t cdrom_read_intr (ide_drive_t *drive)
if (rq->current_nr_sectors > 0) {
printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n",
drive->name, rq->current_nr_sectors);
rq->flags |= REQ_FAILED;
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
} else
cdrom_end_request(drive, 1);
@ -1456,7 +1456,7 @@ static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive)
printk ("%s: cdrom_pc_intr: data underrun %d\n",
drive->name, pc->buflen);
*/
rq->flags |= REQ_FAILED;
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
}
return ide_stopped;
@ -1509,7 +1509,7 @@ static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive)
rq->data += thislen;
rq->data_len -= thislen;
if (rq->flags & REQ_SENSE)
if (blk_sense_request(rq))
rq->sense_len += thislen;
} else {
confused:
@ -1517,7 +1517,7 @@ confused:
"appears confused (ireason = 0x%02x). "
"Trying to recover by ending request.\n",
drive->name, ireason);
rq->flags |= REQ_FAILED;
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
return ide_stopped;
}
@ -1546,7 +1546,7 @@ static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive)
struct cdrom_info *info = drive->driver_data;
info->dma = 0;
rq->flags &= ~REQ_FAILED;
rq->cmd_flags &= ~REQ_FAILED;
len = rq->data_len;
/* Start sending the command to the drive. */
@ -1558,7 +1558,7 @@ static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq)
{
struct request_sense sense;
int retries = 10;
unsigned int flags = rq->flags;
unsigned int flags = rq->cmd_flags;
if (rq->sense == NULL)
rq->sense = &sense;
@ -1567,14 +1567,14 @@ static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq)
do {
int error;
unsigned long time = jiffies;
rq->flags = flags;
rq->cmd_flags = flags;
error = ide_do_drive_cmd(drive, rq, ide_wait);
time = jiffies - time;
/* FIXME: we should probably abort/retry or something
* in case of failure */
if (rq->flags & REQ_FAILED) {
if (rq->cmd_flags & REQ_FAILED) {
/* The request failed. Retry if it was due to a unit
attention status
(usually means media was changed). */
@ -1596,10 +1596,10 @@ static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq)
}
/* End of retry loop. */
} while ((rq->flags & REQ_FAILED) && retries >= 0);
} while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
/* Return an error if the command failed. */
return (rq->flags & REQ_FAILED) ? -EIO : 0;
return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
}
/*
@ -1963,7 +1963,7 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
{
struct cdrom_info *info = drive->driver_data;
rq->flags |= REQ_QUIET;
rq->cmd_flags |= REQ_QUIET;
info->dma = 0;
@ -2023,11 +2023,11 @@ ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block)
}
info->last_block = block;
return action;
} else if (rq->flags & (REQ_PC | REQ_SENSE)) {
} else if (rq->cmd_type == REQ_TYPE_SENSE) {
return cdrom_do_packet_command(drive);
} else if (rq->flags & REQ_BLOCK_PC) {
} else if (blk_pc_request(rq)) {
return cdrom_do_block_pc(drive, rq);
} else if (rq->flags & REQ_SPECIAL) {
} else if (blk_special_request(rq)) {
/*
* right now this can only be a reset...
*/
@ -2105,7 +2105,7 @@ static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
req.sense = sense;
req.cmd[0] = GPCMD_TEST_UNIT_READY;
req.flags |= REQ_QUIET;
req.cmd_flags |= REQ_QUIET;
#if ! STANDARD_ATAPI
/* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
@ -2207,7 +2207,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
req.data = (char *)&capbuf;
req.data_len = sizeof(capbuf);
req.flags |= REQ_QUIET;
req.cmd_flags |= REQ_QUIET;
stat = cdrom_queue_packet_command(drive, &req);
if (stat == 0) {
@ -2230,7 +2230,7 @@ static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
req.sense = sense;
req.data = buf;
req.data_len = buflen;
req.flags |= REQ_QUIET;
req.cmd_flags |= REQ_QUIET;
req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
req.cmd[6] = trackno;
req.cmd[7] = (buflen >> 8);
@ -2531,7 +2531,7 @@ static int ide_cdrom_packet(struct cdrom_device_info *cdi,
req.timeout = cgc->timeout;
if (cgc->quiet)
req.flags |= REQ_QUIET;
req.cmd_flags |= REQ_QUIET;
req.sense = cgc->sense;
cgc->stat = cdrom_queue_packet_command(drive, &req);
@ -2629,7 +2629,8 @@ int ide_cdrom_reset (struct cdrom_device_info *cdi)
int ret;
cdrom_prepare_request(drive, &req);
req.flags = REQ_SPECIAL | REQ_QUIET;
req.cmd_type = REQ_TYPE_SPECIAL;
req.cmd_flags = REQ_QUIET;
ret = ide_do_drive_cmd(drive, &req, ide_wait);
/*
@ -3116,9 +3117,9 @@ static int ide_cdrom_prep_pc(struct request *rq)
static int ide_cdrom_prep_fn(request_queue_t *q, struct request *rq)
{
if (rq->flags & REQ_CMD)
if (blk_fs_request(rq))
return ide_cdrom_prep_fs(q, rq);
else if (rq->flags & REQ_BLOCK_PC)
else if (blk_pc_request(rq))
return ide_cdrom_prep_pc(rq);
return 0;

5
drivers/ide/ide-disk.c
View File

@ -699,7 +699,8 @@ static void idedisk_prepare_flush(request_queue_t *q, struct request *rq)
rq->cmd[0] = WIN_FLUSH_CACHE;
rq->flags |= REQ_DRIVE_TASK;
rq->cmd_type = REQ_TYPE_ATA_TASK;
rq->cmd_flags |= REQ_SOFTBARRIER;
rq->buffer = rq->cmd;
}
@ -740,7 +741,7 @@ static int set_multcount(ide_drive_t *drive, int arg)
if (drive->special.b.set_multmode)
return -EBUSY;
ide_init_drive_cmd (&rq);
rq.flags = REQ_DRIVE_CMD;
rq.cmd_type = REQ_TYPE_ATA_CMD;
drive->mult_req = arg;
drive->special.b.set_multmode = 1;
(void) ide_do_drive_cmd (drive, &rq, ide_wait);

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

@ -205,7 +205,7 @@ int ide_build_sglist(ide_drive_t *drive, struct request *rq)
ide_hwif_t *hwif = HWIF(drive);
struct scatterlist *sg = hwif->sg_table;
BUG_ON((rq->flags & REQ_DRIVE_TASKFILE) && rq->nr_sectors > 256);
BUG_ON((rq->cmd_type == REQ_TYPE_ATA_TASKFILE) && rq->nr_sectors > 256);
ide_map_sg(drive, rq);

17
drivers/ide/ide-floppy.c
View File

@ -588,7 +588,7 @@ static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs)
/* Why does this happen? */
if (!rq)
return 0;
if (!(rq->flags & REQ_SPECIAL)) { //if (!IDEFLOPPY_RQ_CMD (rq->cmd)) {
if (!blk_special_request(rq)) {
/* our real local end request function */
ide_end_request(drive, uptodate, nsecs);
return 0;
@ -689,7 +689,7 @@ static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struc
ide_init_drive_cmd(rq);
rq->buffer = (char *) pc;
rq->flags = REQ_SPECIAL; //rq->cmd = IDEFLOPPY_PC_RQ;
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->rq_disk = floppy->disk;
(void) ide_do_drive_cmd(drive, rq, ide_preempt);
}
@ -1250,7 +1250,7 @@ static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t
pc->callback = &idefloppy_rw_callback;
pc->rq = rq;
pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
if (rq->flags & REQ_RW)
if (rq->cmd_flags & REQ_RW)
set_bit(PC_WRITING, &pc->flags);
pc->buffer = NULL;
pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
@ -1281,8 +1281,7 @@ static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request
idefloppy_pc_t *pc;
unsigned long block = (unsigned long)block_s;
debug_log(KERN_INFO "rq_status: %d, dev: %s, flags: %lx, errors: %d\n",
rq->rq_status,
debug_log(KERN_INFO "dev: %s, flags: %lx, errors: %d\n",
rq->rq_disk ? rq->rq_disk->disk_name : "?",
rq->flags, rq->errors);
debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, "
@ -1303,7 +1302,7 @@ static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request
idefloppy_do_end_request(drive, 0, 0);
return ide_stopped;
}
if (rq->flags & REQ_CMD) {
if (blk_fs_request(rq)) {
if (((long)rq->sector % floppy->bs_factor) ||
(rq->nr_sectors % floppy->bs_factor)) {
printk("%s: unsupported r/w request size\n",
@ -1313,9 +1312,9 @@ static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request
}
pc = idefloppy_next_pc_storage(drive);
idefloppy_create_rw_cmd(floppy, pc, rq, block);
} else if (rq->flags & REQ_SPECIAL) {
} else if (blk_special_request(rq)) {
pc = (idefloppy_pc_t *) rq->buffer;
} else if (rq->flags & REQ_BLOCK_PC) {
} else if (blk_pc_request(rq)) {
pc = idefloppy_next_pc_storage(drive);
if (idefloppy_blockpc_cmd(floppy, pc, rq)) {
idefloppy_do_end_request(drive, 0, 0);
@ -1343,7 +1342,7 @@ static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc)
ide_init_drive_cmd (&rq);
rq.buffer = (char *) pc;
rq.flags = REQ_SPECIAL; // rq.cmd = IDEFLOPPY_PC_RQ;
rq.cmd_type = REQ_TYPE_SPECIAL;
rq.rq_disk = floppy->disk;
return ide_do_drive_cmd(drive, &rq, ide_wait);

50
drivers/ide/ide-io.c
View File

@ -59,7 +59,7 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq,
{
int ret = 1;
BUG_ON(!(rq->flags & REQ_STARTED));
BUG_ON(!blk_rq_started(rq));
/*
* if failfast is set on a request, override number of sectors and
@ -141,7 +141,7 @@ enum {
static void ide_complete_power_step(ide_drive_t *drive, struct request *rq, u8 stat, u8 error)
{
struct request_pm_state *pm = rq->end_io_data;
struct request_pm_state *pm = rq->data;
if (drive->media != ide_disk)
return;
@ -164,7 +164,7 @@ static void ide_complete_power_step(ide_drive_t *drive, struct request *rq, u8 s
static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->end_io_data;
struct request_pm_state *pm = rq->data;
ide_task_t *args = rq->special;
memset(args, 0, sizeof(*args));
@ -244,7 +244,7 @@ int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
spin_lock_irqsave(&ide_lock, flags);
BUG_ON(!(rq->flags & REQ_STARTED));
BUG_ON(!blk_rq_started(rq));
/*
* if failfast is set on a request, override number of sectors and
@ -366,7 +366,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
rq = HWGROUP(drive)->rq;
spin_unlock_irqrestore(&ide_lock, flags);
if (rq->flags & REQ_DRIVE_CMD) {
if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
u8 *args = (u8 *) rq->buffer;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
@ -376,7 +376,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
args[1] = err;
args[2] = hwif->INB(IDE_NSECTOR_REG);
}
} else if (rq->flags & REQ_DRIVE_TASK) {
} else if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
u8 *args = (u8 *) rq->buffer;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
@ -390,7 +390,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
args[5] = hwif->INB(IDE_HCYL_REG);
args[6] = hwif->INB(IDE_SELECT_REG);
}
} else if (rq->flags & REQ_DRIVE_TASKFILE) {
} else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = (ide_task_t *) rq->special;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
@ -421,7 +421,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
}
}
} else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->end_io_data;
struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk("%s: complete_power_step(step: %d, stat: %x, err: %x)\n",
drive->name, rq->pm->pm_step, stat, err);
@ -587,7 +587,7 @@ ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, u8 stat)
return ide_stopped;
/* retry only "normal" I/O: */
if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
if (!blk_fs_request(rq)) {
rq->errors = 1;
ide_end_drive_cmd(drive, stat, err);
return ide_stopped;
@ -638,7 +638,7 @@ ide_startstop_t ide_abort(ide_drive_t *drive, const char *msg)
return ide_stopped;
/* retry only "normal" I/O: */
if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
if (!blk_fs_request(rq)) {
rq->errors = 1;
ide_end_drive_cmd(drive, BUSY_STAT, 0);
return ide_stopped;
@ -808,7 +808,7 @@ void ide_map_sg(ide_drive_t *drive, struct request *rq)
if (hwif->sg_mapped) /* needed by ide-scsi */
return;
if ((rq->flags & REQ_DRIVE_TASKFILE) == 0) {
if (rq->cmd_type != REQ_TYPE_ATA_TASKFILE) {
hwif->sg_nents = blk_rq_map_sg(drive->queue, rq, sg);
} else {
sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE);
@ -844,7 +844,7 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
struct request *rq)
{
ide_hwif_t *hwif = HWIF(drive);
if (rq->flags & REQ_DRIVE_TASKFILE) {
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = rq->special;
if (!args)
@ -866,7 +866,7 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
if (args->tf_out_flags.all != 0)
return flagged_taskfile(drive, args);
return do_rw_taskfile(drive, args);
} else if (rq->flags & REQ_DRIVE_TASK) {
} else if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
u8 *args = rq->buffer;
u8 sel;
@ -892,7 +892,7 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
hwif->OUTB(sel, IDE_SELECT_REG);
ide_cmd(drive, args[0], args[2], &drive_cmd_intr);
return ide_started;
} else if (rq->flags & REQ_DRIVE_CMD) {
} else if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
u8 *args = rq->buffer;
if (!args)
@ -933,7 +933,7 @@ done:
static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->end_io_data;
struct request_pm_state *pm = rq->data;
if (blk_pm_suspend_request(rq) &&
pm->pm_step == ide_pm_state_start_suspend)
@ -980,7 +980,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
ide_startstop_t startstop;
sector_t block;
BUG_ON(!(rq->flags & REQ_STARTED));
BUG_ON(!blk_rq_started(rq));
#ifdef DEBUG
printk("%s: start_request: current=0x%08lx\n",
@ -1013,12 +1013,12 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
if (!drive->special.all) {
ide_driver_t *drv;
if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK))
return execute_drive_cmd(drive, rq);
else if (rq->flags & REQ_DRIVE_TASKFILE)
if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
rq->cmd_type == REQ_TYPE_ATA_TASK ||
rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->end_io_data;
struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk("%s: start_power_step(step: %d)\n",
drive->name, rq->pm->pm_step);
@ -1264,7 +1264,7 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
* We count how many times we loop here to make sure we service
* all drives in the hwgroup without looping for ever
*/
if (drive->blocked && !blk_pm_request(rq) && !(rq->flags & REQ_PREEMPT)) {
if (drive->blocked && !blk_pm_request(rq) && !(rq->cmd_flags & REQ_PREEMPT)) {
drive = drive->next ? drive->next : hwgroup->drive;
if (loops++ < 4 && !blk_queue_plugged(drive->queue))
goto again;
@ -1670,7 +1670,7 @@ irqreturn_t ide_intr (int irq, void *dev_id, struct pt_regs *regs)
void ide_init_drive_cmd (struct request *rq)
{
memset(rq, 0, sizeof(*rq));
rq->flags = REQ_DRIVE_CMD;
rq->cmd_type = REQ_TYPE_ATA_CMD;
rq->ref_count = 1;
}
@ -1710,7 +1710,6 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
int must_wait = (action == ide_wait || action == ide_head_wait);
rq->errors = 0;
rq->rq_status = RQ_ACTIVE;
/*
* we need to hold an extra reference to request for safe inspection
@ -1718,7 +1717,7 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
*/
if (must_wait) {
rq->ref_count++;
rq->waiting = &wait;
rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
}
@ -1727,7 +1726,7 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
hwgroup->rq = NULL;
if (action == ide_preempt || action == ide_head_wait) {
where = ELEVATOR_INSERT_FRONT;
rq->flags |= REQ_PREEMPT;
rq->cmd_flags |= REQ_PREEMPT;
}
__elv_add_request(drive->queue, rq, where, 0);
ide_do_request(hwgroup, IDE_NO_IRQ);
@ -1736,7 +1735,6 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
err = 0;
if (must_wait) {
wait_for_completion(&wait);
rq->waiting = NULL;
if (rq->errors)
err = -EIO;

5
drivers/ide/ide-lib.c
View File

@ -456,13 +456,14 @@ static void ide_dump_opcode(ide_drive_t *drive)
spin_unlock(&ide_lock);
if (!rq)
return;
if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK)) {
if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
rq->cmd_type == REQ_TYPE_ATA_TASK) {
char *args = rq->buffer;
if (args) {
opcode = args[0];
found = 1;
}
} else if (rq->flags & REQ_DRIVE_TASKFILE) {
} else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = rq->special;
if (args) {
task_struct_t *tf = (task_struct_t *) args->tfRegister;

14
drivers/ide/ide-tape.c
View File

@ -1776,7 +1776,7 @@ static void idetape_create_request_sense_cmd (idetape_pc_t *pc)
static void idetape_init_rq(struct request *rq, u8 cmd)
{
memset(rq, 0, sizeof(*rq));
rq->flags = REQ_SPECIAL;
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd[0] = cmd;
}
@ -2423,8 +2423,8 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
#if IDETAPE_DEBUG_LOG
#if 0
if (tape->debug_level >= 5)
printk(KERN_INFO "ide-tape: rq_status: %d, "
"dev: %s, cmd: %ld, errors: %d\n", rq->rq_status,
printk(KERN_INFO "ide-tape: %d, "
"dev: %s, cmd: %ld, errors: %d\n",
rq->rq_disk->disk_name, rq->cmd[0], rq->errors);
#endif
if (tape->debug_level >= 2)
@ -2433,12 +2433,12 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
rq->sector, rq->nr_sectors, rq->current_nr_sectors);
#endif /* IDETAPE_DEBUG_LOG */
if ((rq->flags & REQ_SPECIAL) == 0) {
if (!blk_special_request(rq)) {
/*
* We do not support buffer cache originated requests.
*/
printk(KERN_NOTICE "ide-tape: %s: Unsupported request in "
"request queue (%ld)\n", drive->name, rq->flags);
"request queue (%d)\n", drive->name, rq->cmd_type);
ide_end_request(drive, 0, 0);
return ide_stopped;
}
@ -2768,12 +2768,12 @@ static void idetape_wait_for_request (ide_drive_t *drive, struct request *rq)
idetape_tape_t *tape = drive->driver_data;
#if IDETAPE_DEBUG_BUGS
if (rq == NULL || (rq->flags & REQ_SPECIAL) == 0) {
if (rq == NULL || !blk_special_request(rq)) {
printk (KERN_ERR "ide-tape: bug: Trying to sleep on non-valid request\n");
return;
}
#endif /* IDETAPE_DEBUG_BUGS */
rq->waiting = &wait;
rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
spin_unlock_irq(&tape->spinlock);
wait_for_completion(&wait);

8
drivers/ide/ide-taskfile.c
View File

@ -363,7 +363,7 @@ static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
{
if (rq->flags & REQ_DRIVE_TASKFILE) {
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *task = rq->special;
if (task->tf_out_flags.all) {
@ -474,7 +474,7 @@ static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long
struct request rq;
memset(&rq, 0, sizeof(rq));
rq.flags = REQ_DRIVE_TASKFILE;
rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
rq.buffer = buf;
/*
@ -499,7 +499,7 @@ static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long
rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors;
if (args->command_type == IDE_DRIVE_TASK_RAW_WRITE)
rq.flags |= REQ_RW;
rq.cmd_flags |= REQ_RW;
}
rq.special = args;
@ -737,7 +737,7 @@ static int ide_wait_cmd_task(ide_drive_t *drive, u8 *buf)
struct request rq;
ide_init_drive_cmd(&rq);
rq.flags = REQ_DRIVE_TASK;
rq.cmd_type = REQ_TYPE_ATA_TASK;
rq.buffer = buf;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}

8
drivers/ide/ide.c
View File

@ -1217,9 +1217,9 @@ static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
memset(&rq, 0, sizeof(rq));
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
rq.flags = REQ_PM_SUSPEND;
rq.cmd_type = REQ_TYPE_PM_SUSPEND;
rq.special = &args;
rq.end_io_data = &rqpm;
rq.data = &rqpm;
rqpm.pm_step = ide_pm_state_start_suspend;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
@ -1238,9 +1238,9 @@ static int generic_ide_resume(struct device *dev)
memset(&rq, 0, sizeof(rq));
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
rq.flags = REQ_PM_RESUME;
rq.cmd_type = REQ_TYPE_PM_RESUME;
rq.special = &args;
rq.end_io_data = &rqpm;
rq.data = &rqpm;
rqpm.pm_step = ide_pm_state_start_resume;
rqpm.pm_state = PM_EVENT_ON;

2
drivers/ide/legacy/hd.c
View File

@ -626,7 +626,7 @@ repeat:
req->rq_disk->disk_name, (req->cmd == READ)?"read":"writ",
cyl, head, sec, nsect, req->buffer);
#endif
if (req->flags & REQ_CMD) {
if (blk_fs_request(req)) {
switch (rq_data_dir(req)) {
case READ:
hd_out(disk,nsect,sec,head,cyl,WIN_READ,&read_intr);

3
drivers/md/Kconfig
View File

@ -2,6 +2,8 @@
# Block device driver configuration
#
if BLOCK
menu "Multi-device support (RAID and LVM)"
config MD
@ -251,3 +253,4 @@ config DM_MULTIPATH_EMC
endmenu
endif

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

@ -126,7 +126,8 @@ static struct request *get_failover_req(struct emc_handler *h,
memset(&rq->cmd, 0, BLK_MAX_CDB);
rq->timeout = EMC_FAILOVER_TIMEOUT;
rq->flags |= (REQ_BLOCK_PC | REQ_FAILFAST | REQ_NOMERGE);
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->cmd_flags |= REQ_FAILFAST | REQ_NOMERGE;
return rq;
}

2
drivers/message/i2o/Kconfig
View File

@ -88,7 +88,7 @@ config I2O_BUS
config I2O_BLOCK
tristate "I2O Block OSM"
depends on I2O
depends on I2O && BLOCK
---help---
Include support for the I2O Block OSM. The Block OSM presents disk
and other structured block devices to the operating system. If you

7
drivers/message/i2o/i2o_block.c
View File

@ -390,9 +390,9 @@ static int i2o_block_prep_req_fn(struct request_queue *q, struct request *req)
}
/* request is already processed by us, so return */
if (req->flags & REQ_SPECIAL) {
if (blk_special_request(req)) {
osm_debug("REQ_SPECIAL already set!\n");
req->flags |= REQ_DONTPREP;
req->cmd_flags |= REQ_DONTPREP;
return BLKPREP_OK;
}
@ -411,7 +411,8 @@ static int i2o_block_prep_req_fn(struct request_queue *q, struct request *req)
ireq = req->special;
/* do not come back here */
req->flags |= REQ_DONTPREP | REQ_SPECIAL;
req->cmd_type = REQ_TYPE_SPECIAL;
req->cmd_flags |= REQ_DONTPREP;
return BLKPREP_OK;
};

2
drivers/mmc/Kconfig
View File

@ -21,7 +21,7 @@ config MMC_DEBUG
config MMC_BLOCK
tristate "MMC block device driver"
depends on MMC
depends on MMC && BLOCK
default y
help
Say Y here to enable the MMC block device driver support.

3
drivers/mmc/Makefile
View File

@ -24,7 +24,8 @@ obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o
obj-$(CONFIG_MMC_AT91RM9200) += at91_mci.o
mmc_core-y := mmc.o mmc_queue.o mmc_sysfs.o
mmc_core-y := mmc.o mmc_sysfs.o
mmc_core-$(CONFIG_BLOCK) += mmc_queue.o
ifeq ($(CONFIG_MMC_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG

6
drivers/mmc/mmc_queue.c
View File

@ -28,7 +28,7 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
struct mmc_queue *mq = q->queuedata;
int ret = BLKPREP_KILL;
if (req->flags & REQ_SPECIAL) {
if (blk_special_request(req)) {
/*
* Special commands already have the command
* blocks already setup in req->special.
@ -36,7 +36,7 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
BUG_ON(!req->special);
ret = BLKPREP_OK;
} else if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) {
} else if (blk_fs_request(req) || blk_pc_request(req)) {
/*
* Block I/O requests need translating according
* to the protocol.
@ -50,7 +50,7 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
}
if (ret == BLKPREP_OK)
req->flags |= REQ_DONTPREP;
req->cmd_flags |= REQ_DONTPREP;
return ret;
}

12
drivers/mtd/Kconfig
View File

@ -166,7 +166,7 @@ config MTD_CHAR
config MTD_BLOCK
tristate "Caching block device access to MTD devices"
depends on MTD
depends on MTD && BLOCK
---help---
Although most flash chips have an erase size too large to be useful
as block devices, it is possible to use MTD devices which are based
@ -188,7 +188,7 @@ config MTD_BLOCK
config MTD_BLOCK_RO
tristate "Readonly block device access to MTD devices"
depends on MTD_BLOCK!=y && MTD
depends on MTD_BLOCK!=y && MTD && BLOCK
help
This allows you to mount read-only file systems (such as cramfs)
from an MTD device, without the overhead (and danger) of the caching
@ -199,7 +199,7 @@ config MTD_BLOCK_RO
config FTL
tristate "FTL (Flash Translation Layer) support"
depends on MTD
depends on MTD && BLOCK
---help---
This provides support for the original Flash Translation Layer which
is part of the PCMCIA specification. It uses a kind of pseudo-
@ -215,7 +215,7 @@ config FTL
config NFTL
tristate "NFTL (NAND Flash Translation Layer) support"
depends on MTD
depends on MTD && BLOCK
---help---
This provides support for the NAND Flash Translation Layer which is
used on M-Systems' DiskOnChip devices. It uses a kind of pseudo-
@ -238,7 +238,7 @@ config NFTL_RW
config INFTL
tristate "INFTL (Inverse NAND Flash Translation Layer) support"
depends on MTD
depends on MTD && BLOCK
---help---
This provides support for the Inverse NAND Flash Translation
Layer which is used on M-Systems' newer DiskOnChip devices. It
@ -255,7 +255,7 @@ config INFTL
config RFD_FTL
tristate "Resident Flash Disk (Flash Translation Layer) support"
depends on MTD
depends on MTD && BLOCK
---help---
This provides support for the flash translation layer known
as the Resident Flash Disk (RFD), as used by the Embedded BIOS

2
drivers/mtd/devices/Kconfig
View File

@ -136,7 +136,7 @@ config MTDRAM_ABS_POS
config MTD_BLOCK2MTD
tristate "MTD using block device"
depends on MTD
depends on MTD && BLOCK
help
This driver allows a block device to appear as an MTD. It would
generally be used in the following cases:

2
drivers/mtd/mtd_blkdevs.c
View File

@ -46,7 +46,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
nsect = req->current_nr_sectors;
buf = req->buffer;
if (!(req->flags & REQ_CMD))
if (!blk_fs_request(req))
return 0;
if (block + nsect > get_capacity(req->rq_disk))

2
drivers/s390/block/Kconfig
View File

@ -1,4 +1,4 @@
if S390
if S390 && BLOCK
comment "S/390 block device drivers"
depends on S390

2
drivers/s390/block/dasd_diag.c
View File

@ -529,7 +529,7 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
}
cqr->retries = DIAG_MAX_RETRIES;
cqr->buildclk = get_clock();
if (req->flags & REQ_FAILFAST)
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->device = device;
cqr->expires = DIAG_TIMEOUT;

2
drivers/s390/block/dasd_eckd.c
View File

@ -1266,7 +1266,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
recid++;
}
}
if (req->flags & REQ_FAILFAST)
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->device = device;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */

2
drivers/s390/block/dasd_fba.c
View File

@ -344,7 +344,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
recid++;
}
}
if (req->flags & REQ_FAILFAST)
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->device = device;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */

2
drivers/scsi/Kconfig
View File

@ -3,11 +3,13 @@ menu "SCSI device support"
config RAID_ATTRS
tristate "RAID Transport Class"
default n
depends on BLOCK
---help---
Provides RAID
config SCSI
tristate "SCSI device support"
depends on BLOCK
---help---
If you want to use a SCSI hard disk, SCSI tape drive, SCSI CD-ROM or
any other SCSI device under Linux, say Y and make sure that you know

4
drivers/scsi/aic7xxx_old.c
View File

@ -2862,7 +2862,7 @@ aic7xxx_done(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
aic_dev->r_total++;
ptr = aic_dev->r_bins;
}
if(cmd->device->simple_tags && cmd->request->flags & REQ_HARDBARRIER)
if(cmd->device->simple_tags && cmd->request->cmd_flags & REQ_HARDBARRIER)
{
aic_dev->barrier_total++;
if(scb->tag_action == MSG_ORDERED_Q_TAG)
@ -10158,7 +10158,7 @@ aic7xxx_buildscb(struct aic7xxx_host *p, Scsi_Cmnd *cmd,
/* We always force TEST_UNIT_READY to untagged */
if (cmd->cmnd[0] != TEST_UNIT_READY && sdptr->simple_tags)
{
if (req->flags & REQ_HARDBARRIER)
if (req->cmd_flags & REQ_HARDBARRIER)
{
if(sdptr->ordered_tags)
{

16
drivers/scsi/ide-scsi.c
View File

@ -344,7 +344,7 @@ static int idescsi_check_condition(ide_drive_t *drive, struct request *failed_co
pc->buffer = buf;
pc->c[0] = REQUEST_SENSE;
pc->c[4] = pc->request_transfer = pc->buffer_size = SCSI_SENSE_BUFFERSIZE;
rq->flags = REQ_SENSE;
rq->cmd_type = REQ_TYPE_SENSE;
pc->timeout = jiffies + WAIT_READY;
/* NOTE! Save the failed packet command in "rq->buffer" */
rq->buffer = (void *) failed_command->special;
@ -398,12 +398,12 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
int errors = rq->errors;
unsigned long flags;
if (!(rq->flags & (REQ_SPECIAL|REQ_SENSE))) {
if (!blk_special_request(rq) && !blk_sense_request(rq)) {
ide_end_request(drive, uptodate, nrsecs);
return 0;
}
ide_end_drive_cmd (drive, 0, 0);
if (rq->flags & REQ_SENSE) {
if (blk_sense_request(rq)) {
idescsi_pc_t *opc = (idescsi_pc_t *) rq->buffer;
if (log) {
printk ("ide-scsi: %s: wrap up check %lu, rst = ", drive->name, opc->scsi_cmd->serial_number);
@ -708,11 +708,11 @@ static ide_startstop_t idescsi_issue_pc (ide_drive_t *drive, idescsi_pc_t *pc)
static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
{
#if IDESCSI_DEBUG_LOG
printk (KERN_INFO "rq_status: %d, dev: %s, cmd: %x, errors: %d\n",rq->rq_status, rq->rq_disk->disk_name,rq->cmd[0],rq->errors);
printk (KERN_INFO "dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name,rq->cmd[0],rq->errors);
printk (KERN_INFO "sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",rq->sector,rq->nr_sectors,rq->current_nr_sectors);
#endif /* IDESCSI_DEBUG_LOG */
if (rq->flags & (REQ_SPECIAL|REQ_SENSE)) {
if (blk_sense_request(rq) || blk_special_request(rq)) {
return idescsi_issue_pc (drive, (idescsi_pc_t *) rq->special);
}
blk_dump_rq_flags(rq, "ide-scsi: unsup command");
@ -938,7 +938,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd,
ide_init_drive_cmd (rq);
rq->special = (char *) pc;
rq->flags = REQ_SPECIAL;
rq->cmd_type = REQ_TYPE_SPECIAL;
spin_unlock_irq(host->host_lock);
rq->rq_disk = scsi->disk;
(void) ide_do_drive_cmd (drive, rq, ide_end);
@ -992,7 +992,7 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
*/
printk (KERN_ERR "ide-scsi: cmd aborted!\n");
if (scsi->pc->rq->flags & REQ_SENSE)
if (blk_sense_request(scsi->pc->rq))
kfree(scsi->pc->buffer);
kfree(scsi->pc->rq);
kfree(scsi->pc);
@ -1042,7 +1042,7 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
/* kill current request */
blkdev_dequeue_request(req);
end_that_request_last(req, 0);
if (req->flags & REQ_SENSE)
if (blk_sense_request(req))
kfree(scsi->pc->buffer);
kfree(scsi->pc);
scsi->pc = NULL;

6
drivers/scsi/pluto.c
View File

@ -67,7 +67,6 @@ static void __init pluto_detect_done(Scsi_Cmnd *SCpnt)
static void __init pluto_detect_scsi_done(Scsi_Cmnd *SCpnt)
{
SCpnt->request->rq_status = RQ_SCSI_DONE;
PLND(("Detect done %08lx\n", (long)SCpnt))
if (atomic_dec_and_test (&fcss))
up(&fc_sem);
@ -166,7 +165,7 @@ int __init pluto_detect(struct scsi_host_template *tpnt)
SCpnt->cmd_len = COMMAND_SIZE(INQUIRY);
SCpnt->request->rq_status = RQ_SCSI_BUSY;
SCpnt->request->cmd_flags &= ~REQ_STARTED;
SCpnt->done = pluto_detect_done;
SCpnt->request_bufflen = 256;
@ -178,7 +177,8 @@ int __init pluto_detect(struct scsi_host_template *tpnt)
for (retry = 0; retry < 5; retry++) {
for (i = 0; i < fcscount; i++) {
if (!fcs[i].fc) break;
if (fcs[i].cmd.request->rq_status != RQ_SCSI_DONE) {
if (!(fcs[i].cmd.request->cmd_flags & REQ_STARTED)) {
fcs[i].cmd.request->cmd_flags |= REQ_STARTED;
disable_irq(fcs[i].fc->irq);
PLND(("queuecommand %d %d\n", retry, i))
fcp_scsi_queuecommand (&(fcs[i].cmd),

13
drivers/scsi/scsi.c
View File

@ -592,12 +592,6 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
return rtn;
}
/*
* Per-CPU I/O completion queue.
*/
static DEFINE_PER_CPU(struct list_head, scsi_done_q);
/**
* scsi_req_abort_cmd -- Request command recovery for the specified command
* cmd: pointer to the SCSI command of interest
@ -1065,7 +1059,7 @@ int scsi_device_cancel(struct scsi_device *sdev, int recovery)
spin_lock_irqsave(&sdev->list_lock, flags);
list_for_each_entry(scmd, &sdev->cmd_list, list) {
if (scmd->request && scmd->request->rq_status != RQ_INACTIVE) {
if (scmd->request) {
/*
* If we are unable to remove the timer, it means
* that the command has already timed out or
@ -1102,7 +1096,7 @@ MODULE_PARM_DESC(scsi_logging_level, "a bit mask of logging levels");
static int __init init_scsi(void)
{
int error, i;
int error;
error = scsi_init_queue();
if (error)
@ -1123,9 +1117,6 @@ static int __init init_scsi(void)
if (error)
goto cleanup_sysctl;
for_each_possible_cpu(i)
INIT_LIST_HEAD(&per_cpu(scsi_done_q, i));
scsi_netlink_init();
printk(KERN_NOTICE "SCSI subsystem initialized\n");

37
drivers/scsi/scsi_lib.c
View File

@ -82,7 +82,7 @@ static void scsi_unprep_request(struct request *req)
{
struct scsi_cmnd *cmd = req->special;
req->flags &= ~REQ_DONTPREP;
req->cmd_flags &= ~REQ_DONTPREP;
req->special = NULL;
scsi_put_command(cmd);
@ -196,7 +196,8 @@ int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
req->sense_len = 0;
req->retries = retries;
req->timeout = timeout;
req->flags |= flags | REQ_BLOCK_PC | REQ_SPECIAL | REQ_QUIET;
req->cmd_type = REQ_TYPE_BLOCK_PC;
req->cmd_flags |= flags | REQ_QUIET | REQ_PREEMPT;
/*
* head injection *required* here otherwise quiesce won't work
@ -397,7 +398,8 @@ int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
req = blk_get_request(sdev->request_queue, write, gfp);
if (!req)
goto free_sense;
req->flags |= REQ_BLOCK_PC | REQ_QUIET;
req->cmd_type = REQ_TYPE_BLOCK_PC;
req->cmd_flags |= REQ_QUIET;
if (use_sg)
err = scsi_req_map_sg(req, buffer, use_sg, bufflen, gfp);
@ -933,7 +935,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
break;
}
}
if (!(req->flags & REQ_QUIET)) {
if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"Device not ready: ");
scsi_print_sense_hdr("", &sshdr);
@ -941,7 +943,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
scsi_end_request(cmd, 0, this_count, 1);
return;
case VOLUME_OVERFLOW:
if (!(req->flags & REQ_QUIET)) {
if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"Volume overflow, CDB: ");
__scsi_print_command(cmd->cmnd);
@ -963,7 +965,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
return;
}
if (result) {
if (!(req->flags & REQ_QUIET)) {
if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"SCSI error: return code = 0x%08x\n",
result);
@ -995,7 +997,7 @@ static int scsi_init_io(struct scsi_cmnd *cmd)
/*
* if this is a rq->data based REQ_BLOCK_PC, setup for a non-sg xfer
*/
if ((req->flags & REQ_BLOCK_PC) && !req->bio) {
if (blk_pc_request(req) && !req->bio) {
cmd->request_bufflen = req->data_len;
cmd->request_buffer = req->data;
req->buffer = req->data;
@ -1139,13 +1141,12 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
* these two cases differently. We differentiate by looking
* at request->cmd, as this tells us the real story.
*/
if (req->flags & REQ_SPECIAL && req->special) {
if (blk_special_request(req) && req->special)
cmd = req->special;
} else if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) {
if(unlikely(specials_only) && !(req->flags & REQ_SPECIAL)) {
if(specials_only == SDEV_QUIESCE ||
specials_only == SDEV_BLOCK)
else if (blk_pc_request(req) || blk_fs_request(req)) {
if (unlikely(specials_only) && !(req->cmd_flags & REQ_PREEMPT)){
if (specials_only == SDEV_QUIESCE ||
specials_only == SDEV_BLOCK)
goto defer;
sdev_printk(KERN_ERR, sdev,
@ -1153,7 +1154,6 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
goto kill;
}
/*
* Now try and find a command block that we can use.
*/
@ -1184,7 +1184,7 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
* lock. We hope REQ_STARTED prevents anything untoward from
* happening now.
*/
if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) {
if (blk_fs_request(req) || blk_pc_request(req)) {
int ret;
/*
@ -1216,7 +1216,7 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
/*
* Initialize the actual SCSI command for this request.
*/
if (req->flags & REQ_BLOCK_PC) {
if (blk_pc_request(req)) {
scsi_setup_blk_pc_cmnd(cmd);
} else if (req->rq_disk) {
struct scsi_driver *drv;
@ -1233,7 +1233,7 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
/*
* The request is now prepped, no need to come back here
*/
req->flags |= REQ_DONTPREP;
req->cmd_flags |= REQ_DONTPREP;
return BLKPREP_OK;
defer:
@ -1454,8 +1454,9 @@ static void scsi_request_fn(struct request_queue *q)
if (unlikely(cmd == NULL)) {
printk(KERN_CRIT "impossible request in %s.\n"
"please mail a stack trace to "
"linux-scsi@vger.kernel.org",
"linux-scsi@vger.kernel.org\n",
__FUNCTION__);
blk_dump_rq_flags(req, "foo");
BUG();
}
spin_lock(shost->host_lock);

5
drivers/scsi/sd.c
View File

@ -443,8 +443,7 @@ static int sd_init_command(struct scsi_cmnd * SCpnt)
SCpnt->cmnd[0] = READ_6;
SCpnt->sc_data_direction = DMA_FROM_DEVICE;
} else {
printk(KERN_ERR "sd: Unknown command %lx\n", rq->flags);
/* overkill panic("Unknown sd command %lx\n", rq->flags); */
printk(KERN_ERR "sd: Unknown command %x\n", rq->cmd_flags);
return 0;
}
@ -840,7 +839,7 @@ static int sd_issue_flush(struct device *dev, sector_t *error_sector)
static void sd_prepare_flush(request_queue_t *q, struct request *rq)
{
memset(rq->cmd, 0, sizeof(rq->cmd));
rq->flags |= REQ_BLOCK_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->timeout = SD_TIMEOUT;
rq->cmd[0] = SYNCHRONIZE_CACHE;
rq->cmd_len = 10;

2
drivers/scsi/sun3_NCR5380.c
View File

@ -2017,7 +2017,7 @@ static void NCR5380_information_transfer (struct Scsi_Host *instance)
if((count > SUN3_DMA_MINSIZE) && (sun3_dma_setup_done
!= cmd))
{
if(cmd->request->flags & REQ_CMD) {
if(blk_fs_request(cmd->request)) {
sun3scsi_dma_setup(d, count,
rq_data_dir(cmd->request));
sun3_dma_setup_done = cmd;

2
drivers/scsi/sun3_scsi.c
View File

@ -524,7 +524,7 @@ static inline unsigned long sun3scsi_dma_residual(struct Scsi_Host *instance)
static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted, Scsi_Cmnd *cmd,
int write_flag)
{
if(cmd->request->flags & REQ_CMD)
if(blk_fs_request(cmd->request))
return wanted;
else
return 0;

2
drivers/scsi/sun3_scsi_vme.c
View File

@ -458,7 +458,7 @@ static inline unsigned long sun3scsi_dma_residual(struct Scsi_Host *instance)
static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted, Scsi_Cmnd *cmd,
int write_flag)
{
if(cmd->request->flags & REQ_CMD)
if(blk_fs_request(cmd->request))
return wanted;
else
return 0;

5
drivers/usb/storage/Kconfig
View File

@ -8,8 +8,7 @@ comment "may also be needed; see USB_STORAGE Help for more information"
config USB_STORAGE
tristate "USB Mass Storage support"
depends on USB
select SCSI
depends on USB && SCSI
---help---
Say Y here if you want to connect USB mass storage devices to your
computer's USB port. This is the driver you need for USB
@ -18,7 +17,7 @@ config USB_STORAGE
similar devices. This driver may also be used for some cameras
and card readers.
This option 'selects' (turns on, enables) 'SCSI', but you
This option depends on 'SCSI' support being enabled, but you
probably also need 'SCSI device support: SCSI disk support'
(BLK_DEV_SD) for most USB storage devices.

31
fs/Kconfig
View File

@ -4,6 +4,8 @@
menu "File systems"
if BLOCK
config EXT2_FS
tristate "Second extended fs support"
help
@ -399,6 +401,8 @@ config ROMFS_FS
If you don't know whether you need it, then you don't need it:
answer N.
endif
config INOTIFY
bool "Inotify file change notification support"
default y
@ -530,6 +534,7 @@ config FUSE_FS
If you want to develop a userspace FS, or if you want to use
a filesystem based on FUSE, answer Y or M.
if BLOCK
menu "CD-ROM/DVD Filesystems"
config ISO9660_FS
@ -597,7 +602,9 @@ config UDF_NLS
depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
endmenu
endif
if BLOCK
menu "DOS/FAT/NT Filesystems"
config FAT_FS
@ -782,6 +789,7 @@ config NTFS_RW
It is perfectly safe to say N here.
endmenu
endif
menu "Pseudo filesystems"
@ -939,7 +947,7 @@ menu "Miscellaneous filesystems"
config ADFS_FS
tristate "ADFS file system support (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on BLOCK && EXPERIMENTAL
help
The Acorn Disc Filing System is the standard file system of the
RiscOS operating system which runs on Acorn's ARM-based Risc PC
@ -967,7 +975,7 @@ config ADFS_FS_RW
config AFFS_FS
tristate "Amiga FFS file system support (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on BLOCK && EXPERIMENTAL
help
The Fast File System (FFS) is the common file system used on hard
disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
@ -989,7 +997,7 @@ config AFFS_FS
config HFS_FS
tristate "Apple Macintosh file system support (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on BLOCK && EXPERIMENTAL
select NLS
help
If you say Y here, you will be able to mount Macintosh-formatted
@ -1002,6 +1010,7 @@ config HFS_FS
config HFSPLUS_FS
tristate "Apple Extended HFS file system support"
depends on BLOCK
select NLS
select NLS_UTF8
help
@ -1015,7 +1024,7 @@ config HFSPLUS_FS
config BEFS_FS
tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on BLOCK && EXPERIMENTAL
select NLS
help
The BeOS File System (BeFS) is the native file system of Be, Inc's
@ -1042,7 +1051,7 @@ config BEFS_DEBUG
config BFS_FS
tristate "BFS file system support (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on BLOCK && EXPERIMENTAL
help
Boot File System (BFS) is a file system used under SCO UnixWare to
allow the bootloader access to the kernel image and other important
@ -1064,7 +1073,7 @@ config BFS_FS
config EFS_FS
tristate "EFS file system support (read only) (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on BLOCK && EXPERIMENTAL
help
EFS is an older file system used for non-ISO9660 CD-ROMs and hard
disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
@ -1079,7 +1088,7 @@ config EFS_FS
config JFFS_FS
tristate "Journalling Flash File System (JFFS) support"
depends on MTD
depends on MTD && BLOCK
help
JFFS is the Journaling Flash File System developed by Axis
Communications in Sweden, aimed at providing a crash/powerdown-safe
@ -1264,6 +1273,7 @@ endchoice
config CRAMFS
tristate "Compressed ROM file system support (cramfs)"
depends on BLOCK
select ZLIB_INFLATE
help
Saying Y here includes support for CramFs (Compressed ROM File
@ -1283,6 +1293,7 @@ config CRAMFS
config VXFS_FS
tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
depends on BLOCK
help
FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
file system format. VERITAS VxFS(TM) is the standard file system
@ -1300,6 +1311,7 @@ config VXFS_FS
config HPFS_FS
tristate "OS/2 HPFS file system support"
depends on BLOCK
help
OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
is the file system used for organizing files on OS/2 hard disk
@ -1316,6 +1328,7 @@ config HPFS_FS
config QNX4FS_FS
tristate "QNX4 file system support (read only)"
depends on BLOCK
help
This is the file system used by the real-time operating systems
QNX 4 and QNX 6 (the latter is also called QNX RTP).
@ -1343,6 +1356,7 @@ config QNX4FS_RW
config SYSV_FS
tristate "System V/Xenix/V7/Coherent file system support"
depends on BLOCK
help
SCO, Xenix and Coherent are commercial Unix systems for Intel
machines, and Version 7 was used on the DEC PDP-11. Saying Y
@ -1381,6 +1395,7 @@ config SYSV_FS
config UFS_FS
tristate "UFS file system support (read only)"
depends on BLOCK
help
BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
OpenBSD and NeXTstep) use a file system called UFS. Some System V
@ -1959,11 +1974,13 @@ config GENERIC_ACL
endmenu
if BLOCK
menu "Partition Types"
source "fs/partitions/Kconfig"
endmenu
endif
source "fs/nls/Kconfig"

14
fs/Makefile
View File

@ -5,12 +5,18 @@
# Rewritten to use lists instead of if-statements.
#
obj-y := open.o read_write.o file_table.o buffer.o bio.o super.o \
block_dev.o char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \
obj-y := open.o read_write.o file_table.o super.o \
char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \
ioctl.o readdir.o select.o fifo.o locks.o dcache.o inode.o \
attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
seq_file.o xattr.o libfs.o fs-writeback.o mpage.o direct-io.o \
ioprio.o pnode.o drop_caches.o splice.o sync.o
seq_file.o xattr.o libfs.o fs-writeback.o \
pnode.o drop_caches.o splice.o sync.o
ifeq ($(CONFIG_BLOCK),y)
obj-y += buffer.o bio.o block_dev.o direct-io.o mpage.o ioprio.o
else
obj-y += no-block.o
endif
obj-$(CONFIG_INOTIFY) += inotify.o
obj-$(CONFIG_INOTIFY_USER) += inotify_user.o

2
fs/afs/file.c
View File

@ -16,7 +16,6 @@
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include "volume.h"
#include "vnode.h"
#include <rxrpc/call.h>
@ -37,7 +36,6 @@ struct inode_operations afs_file_inode_operations = {
const struct address_space_operations afs_fs_aops = {
.readpage = afs_file_readpage,
.sync_page = block_sync_page,
.set_page_dirty = __set_page_dirty_nobuffers,
.releasepage = afs_file_releasepage,
.invalidatepage = afs_file_invalidatepage,

1
fs/binfmt_elf.c
View File

@ -46,7 +46,6 @@
static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs);
static int load_elf_library(struct file *);
static unsigned long elf_map (struct file *, unsigned long, struct elf_phdr *, int, int);
extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
#ifndef elf_addr_t
#define elf_addr_t unsigned long

4
fs/bio.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2001 Jens Axboe <axboe@suse.de>
* Copyright (C) 2001 Jens Axboe <axboe@kernel.dk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -1142,7 +1142,7 @@ static int biovec_create_pools(struct bio_set *bs, int pool_entries, int scale)
struct biovec_slab *bp = bvec_slabs + i;
mempool_t **bvp = bs->bvec_pools + i;
if (i >= scale)
if (pool_entries > 1 && i >= scale)
pool_entries >>= 1;
*bvp = mempool_create_slab_pool(pool_entries, bp->slab);

23
fs/block_dev.c
View File

@ -17,11 +17,13 @@
#include <linux/module.h>
#include <linux/blkpg.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/mpage.h>
#include <linux/mount.h>
#include <linux/uio.h>
#include <linux/namei.h>
#include <asm/uaccess.h>
#include "internal.h"
struct bdev_inode {
struct block_device bdev;
@ -1313,3 +1315,24 @@ void close_bdev_excl(struct block_device *bdev)
}
EXPORT_SYMBOL(close_bdev_excl);
int __invalidate_device(struct block_device *bdev)
{
struct super_block *sb = get_super(bdev);
int res = 0;
if (sb) {
/*
* no need to lock the super, get_super holds the
* read mutex so the filesystem cannot go away
* under us (->put_super runs with the write lock
* hold).
*/
shrink_dcache_sb(sb);
res = invalidate_inodes(sb);
drop_super(sb);
}
invalidate_bdev(bdev, 0);
return res;
}
EXPORT_SYMBOL(__invalidate_device);

174
fs/buffer.c
View File

@ -159,31 +159,6 @@ int sync_blockdev(struct block_device *bdev)
}
EXPORT_SYMBOL(sync_blockdev);
static void __fsync_super(struct super_block *sb)
{
sync_inodes_sb(sb, 0);
DQUOT_SYNC(sb);
lock_super(sb);
if (sb->s_dirt && sb->s_op->write_super)
sb->s_op->write_super(sb);
unlock_super(sb);
if (sb->s_op->sync_fs)
sb->s_op->sync_fs(sb, 1);
sync_blockdev(sb->s_bdev);
sync_inodes_sb(sb, 1);
}
/*
* Write out and wait upon all dirty data associated with this
* superblock. Filesystem data as well as the underlying block
* device. Takes the superblock lock.
*/
int fsync_super(struct super_block *sb)
{
__fsync_super(sb);
return sync_blockdev(sb->s_bdev);
}
/*
* Write out and wait upon all dirty data associated with this
* device. Filesystem data as well as the underlying block
@ -259,118 +234,6 @@ void thaw_bdev(struct block_device *bdev, struct super_block *sb)
}
EXPORT_SYMBOL(thaw_bdev);
/*
* sync everything. Start out by waking pdflush, because that writes back
* all queues in parallel.
*/
static void do_sync(unsigned long wait)
{
wakeup_pdflush(0);
sync_inodes(0); /* All mappings, inodes and their blockdevs */
DQUOT_SYNC(NULL);
sync_supers(); /* Write the superblocks */
sync_filesystems(0); /* Start syncing the filesystems */
sync_filesystems(wait); /* Waitingly sync the filesystems */
sync_inodes(wait); /* Mappings, inodes and blockdevs, again. */
if (!wait)
printk("Emergency Sync complete\n");
if (unlikely(laptop_mode))
laptop_sync_completion();
}
asmlinkage long sys_sync(void)
{
do_sync(1);
return 0;
}
void emergency_sync(void)
{
pdflush_operation(do_sync, 0);
}
/*
* Generic function to fsync a file.
*
* filp may be NULL if called via the msync of a vma.
*/
int file_fsync(struct file *filp, struct dentry *dentry, int datasync)
{
struct inode * inode = dentry->d_inode;
struct super_block * sb;
int ret, err;
/* sync the inode to buffers */
ret = write_inode_now(inode, 0);
/* sync the superblock to buffers */
sb = inode->i_sb;
lock_super(sb);
if (sb->s_op->write_super)
sb->s_op->write_super(sb);
unlock_super(sb);
/* .. finally sync the buffers to disk */
err = sync_blockdev(sb->s_bdev);
if (!ret)
ret = err;
return ret;
}
long do_fsync(struct file *file, int datasync)
{
int ret;
int err;
struct address_space *mapping = file->f_mapping;
if (!file->f_op || !file->f_op->fsync) {
/* Why? We can still call filemap_fdatawrite */
ret = -EINVAL;
goto out;
}
ret = filemap_fdatawrite(mapping);
/*
* We need to protect against concurrent writers, which could cause
* livelocks in fsync_buffers_list().
*/
mutex_lock(&mapping->host->i_mutex);
err = file->f_op->fsync(file, file->f_dentry, datasync);
if (!ret)
ret = err;
mutex_unlock(&mapping->host->i_mutex);
err = filemap_fdatawait(mapping);
if (!ret)
ret = err;
out:
return ret;
}
static long __do_fsync(unsigned int fd, int datasync)
{
struct file *file;
int ret = -EBADF;
file = fget(fd);
if (file) {
ret = do_fsync(file, datasync);
fput(file);
}
return ret;
}
asmlinkage long sys_fsync(unsigned int fd)
{
return __do_fsync(fd, 0);
}
asmlinkage long sys_fdatasync(unsigned int fd)
{
return __do_fsync(fd, 1);
}
/*
* Various filesystems appear to want __find_get_block to be non-blocking.
* But it's the page lock which protects the buffers. To get around this,
@ -1550,35 +1413,6 @@ static void discard_buffer(struct buffer_head * bh)
unlock_buffer(bh);
}
/**
* try_to_release_page() - release old fs-specific metadata on a page
*
* @page: the page which the kernel is trying to free
* @gfp_mask: memory allocation flags (and I/O mode)
*
* The address_space is to try to release any data against the page
* (presumably at page->private). If the release was successful, return `1'.
* Otherwise return zero.
*
* The @gfp_mask argument specifies whether I/O may be performed to release
* this page (__GFP_IO), and whether the call may block (__GFP_WAIT).
*
* NOTE: @gfp_mask may go away, and this function may become non-blocking.
*/
int try_to_release_page(struct page *page, gfp_t gfp_mask)
{
struct address_space * const mapping = page->mapping;
BUG_ON(!PageLocked(page));
if (PageWriteback(page))
return 0;
if (mapping && mapping->a_ops->releasepage)
return mapping->a_ops->releasepage(page, gfp_mask);
return try_to_free_buffers(page);
}
EXPORT_SYMBOL(try_to_release_page);
/**
* block_invalidatepage - invalidate part of all of a buffer-backed page
*
@ -1630,14 +1464,6 @@ out:
}
EXPORT_SYMBOL(block_invalidatepage);
void do_invalidatepage(struct page *page, unsigned long offset)
{
void (*invalidatepage)(struct page *, unsigned long);
invalidatepage = page->mapping->a_ops->invalidatepage ? :
block_invalidatepage;
(*invalidatepage)(page, offset);
}
/*
* We attach and possibly dirty the buffers atomically wrt
* __set_page_dirty_buffers() via private_lock. try_to_free_buffers

1
fs/char_dev.c
View File

@ -24,6 +24,7 @@
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
#include "internal.h"
/*
* capabilities for /dev/mem, /dev/kmem and similar directly mappable character

1
fs/cifs/file.c
View File

@ -25,7 +25,6 @@
#include <linux/backing-dev.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
#include <linux/mpage.h>
#include <linux/pagemap.h>
#include <linux/pagevec.h>
#include <linux/smp_lock.h>

1
fs/cifs/inode.c
View File

@ -19,7 +19,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/stat.h>
#include <linux/pagemap.h>
#include <asm/div64.h>

7
fs/cifs/ioctl.c
View File

@ -22,7 +22,6 @@
*/
#include <linux/fs.h>
#include <linux/ext2_fs.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
@ -74,7 +73,7 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
}
break;
#ifdef CONFIG_CIFS_POSIX
case EXT2_IOC_GETFLAGS:
case FS_IOC_GETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
if (pSMBFile == NULL)
break;
@ -82,12 +81,12 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
&ExtAttrBits, &ExtAttrMask);
if(rc == 0)
rc = put_user(ExtAttrBits &
EXT2_FL_USER_VISIBLE,
FS_FL_USER_VISIBLE,
(int __user *)arg);
}
break;
case EXT2_IOC_SETFLAGS:
case FS_IOC_SETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
if(get_user(ExtAttrBits,(int __user *)arg)) {
rc = -EFAULT;

10
fs/compat.c
View File

@ -52,11 +52,12 @@
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/ioctls.h>
extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
#include "internal.h"
int compat_log = 1;
extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
int compat_printk(const char *fmt, ...)
{
va_list ap;
@ -313,9 +314,6 @@ out:
#define IOCTL_HASHSIZE 256
static struct ioctl_trans *ioctl32_hash_table[IOCTL_HASHSIZE];
extern struct ioctl_trans ioctl_start[];
extern int ioctl_table_size;
static inline unsigned long ioctl32_hash(unsigned long cmd)
{
return (((cmd >> 6) ^ (cmd >> 4) ^ cmd)) % IOCTL_HASHSIZE;
@ -838,8 +836,6 @@ static int do_nfs4_super_data_conv(void *raw_data)
return 0;
}
extern int copy_mount_options (const void __user *, unsigned long *);
#define SMBFS_NAME "smbfs"
#define NCPFS_NAME "ncpfs"
#define NFS4_NAME "nfs4"

208
fs/compat_ioctl.c
View File

@ -40,15 +40,11 @@
#include <linux/if_pppox.h>
#include <linux/mtio.h>
#include <linux/cdrom.h>
#include <linux/loop.h>
#include <linux/auto_fs.h>
#include <linux/auto_fs4.h>
#include <linux/tty.h>
#include <linux/vt_kern.h>
#include <linux/fb.h>
#include <linux/ext2_fs.h>
#include <linux/ext3_jbd.h>
#include <linux/ext3_fs.h>
#include <linux/videodev.h>
#include <linux/netdevice.h>
#include <linux/raw.h>
@ -60,7 +56,6 @@
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/serial.h>
#include <linux/reiserfs_fs.h>
#include <linux/if_tun.h>
#include <linux/ctype.h>
#include <linux/ioctl32.h>
@ -113,7 +108,6 @@
#include <linux/nbd.h>
#include <linux/random.h>
#include <linux/filter.h>
#include <linux/msdos_fs.h>
#include <linux/pktcdvd.h>
#include <linux/hiddev.h>
@ -124,21 +118,6 @@
#include <linux/dvb/video.h>
#include <linux/lp.h>
/* Aiee. Someone does not find a difference between int and long */
#define EXT2_IOC32_GETFLAGS _IOR('f', 1, int)
#define EXT2_IOC32_SETFLAGS _IOW('f', 2, int)
#define EXT3_IOC32_GETVERSION _IOR('f', 3, int)
#define EXT3_IOC32_SETVERSION _IOW('f', 4, int)
#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int)
#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int)
#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)
#ifdef CONFIG_JBD_DEBUG
#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int)
#endif
#define EXT2_IOC32_GETVERSION _IOR('v', 1, int)
#define EXT2_IOC32_SETVERSION _IOW('v', 2, int)
static int do_ioctl32_pointer(unsigned int fd, unsigned int cmd,
unsigned long arg, struct file *f)
{
@ -176,34 +155,6 @@ static int rw_long(unsigned int fd, unsigned int cmd, unsigned long arg)
return err;
}
static int do_ext2_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
{
/* These are just misnamed, they actually get/put from/to user an int */
switch (cmd) {
case EXT2_IOC32_GETFLAGS: cmd = EXT2_IOC_GETFLAGS; break;
case EXT2_IOC32_SETFLAGS: cmd = EXT2_IOC_SETFLAGS; break;
case EXT2_IOC32_GETVERSION: cmd = EXT2_IOC_GETVERSION; break;
case EXT2_IOC32_SETVERSION: cmd = EXT2_IOC_SETVERSION; break;
}
return sys_ioctl(fd, cmd, (unsigned long)compat_ptr(arg));
}
static int do_ext3_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
{
/* These are just misnamed, they actually get/put from/to user an int */
switch (cmd) {
case EXT3_IOC32_GETVERSION: cmd = EXT3_IOC_GETVERSION; break;
case EXT3_IOC32_SETVERSION: cmd = EXT3_IOC_SETVERSION; break;
case EXT3_IOC32_GETRSVSZ: cmd = EXT3_IOC_GETRSVSZ; break;
case EXT3_IOC32_SETRSVSZ: cmd = EXT3_IOC_SETRSVSZ; break;
case EXT3_IOC32_GROUP_EXTEND: cmd = EXT3_IOC_GROUP_EXTEND; break;
#ifdef CONFIG_JBD_DEBUG
case EXT3_IOC32_WAIT_FOR_READONLY: cmd = EXT3_IOC_WAIT_FOR_READONLY; break;
#endif
}
return sys_ioctl(fd, cmd, (unsigned long)compat_ptr(arg));
}
struct compat_video_event {
int32_t type;
compat_time_t timestamp;
@ -694,6 +645,7 @@ out:
}
#endif
#ifdef CONFIG_BLOCK
struct hd_geometry32 {
unsigned char heads;
unsigned char sectors;
@ -918,6 +870,7 @@ static int sg_grt_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
}
return err;
}
#endif /* CONFIG_BLOCK */
struct sock_fprog32 {
unsigned short len;
@ -1041,6 +994,7 @@ static int ppp_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
}
#ifdef CONFIG_BLOCK
struct mtget32 {
compat_long_t mt_type;
compat_long_t mt_resid;
@ -1213,73 +1167,7 @@ static int cdrom_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long ar
return err;
}
struct loop_info32 {
compat_int_t lo_number; /* ioctl r/o */
compat_dev_t lo_device; /* ioctl r/o */
compat_ulong_t lo_inode; /* ioctl r/o */
compat_dev_t lo_rdevice; /* ioctl r/o */
compat_int_t lo_offset;
compat_int_t lo_encrypt_type;
compat_int_t lo_encrypt_key_size; /* ioctl w/o */
compat_int_t lo_flags; /* ioctl r/o */
char lo_name[LO_NAME_SIZE];
unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
compat_ulong_t lo_init[2];
char reserved[4];
};
static int loop_status(unsigned int fd, unsigned int cmd, unsigned long arg)
{
mm_segment_t old_fs = get_fs();
struct loop_info l;
struct loop_info32 __user *ul;
int err = -EINVAL;
ul = compat_ptr(arg);
switch(cmd) {
case LOOP_SET_STATUS:
err = get_user(l.lo_number, &ul->lo_number);
err |= __get_user(l.lo_device, &ul->lo_device);
err |= __get_user(l.lo_inode, &ul->lo_inode);
err |= __get_user(l.lo_rdevice, &ul->lo_rdevice);
err |= __copy_from_user(&l.lo_offset, &ul->lo_offset,
8 + (unsigned long)l.lo_init - (unsigned long)&l.lo_offset);
if (err) {
err = -EFAULT;
} else {
set_fs (KERNEL_DS);
err = sys_ioctl (fd, cmd, (unsigned long)&l);
set_fs (old_fs);
}
break;
case LOOP_GET_STATUS:
set_fs (KERNEL_DS);
err = sys_ioctl (fd, cmd, (unsigned long)&l);
set_fs (old_fs);
if (!err) {
err = put_user(l.lo_number, &ul->lo_number);
err |= __put_user(l.lo_device, &ul->lo_device);
err |= __put_user(l.lo_inode, &ul->lo_inode);
err |= __put_user(l.lo_rdevice, &ul->lo_rdevice);
err |= __copy_to_user(&ul->lo_offset, &l.lo_offset,
(unsigned long)l.lo_init - (unsigned long)&l.lo_offset);
if (err)
err = -EFAULT;
}
break;
default: {
static int count;
if (++count <= 20)
printk("%s: Unknown loop ioctl cmd, fd(%d) "
"cmd(%08x) arg(%08lx)\n",
__FUNCTION__, fd, cmd, arg);
}
}
return err;
}
extern int tty_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg);
#endif /* CONFIG_BLOCK */
#ifdef CONFIG_VT
@ -1607,6 +1495,7 @@ ret_einval(unsigned int fd, unsigned int cmd, unsigned long arg)
return -EINVAL;
}
#ifdef CONFIG_BLOCK
static int broken_blkgetsize(unsigned int fd, unsigned int cmd, unsigned long arg)
{
/* The mkswap binary hard codes it to Intel value :-((( */
@ -1641,12 +1530,14 @@ static int blkpg_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long ar
return sys_ioctl(fd, cmd, (unsigned long)a);
}
#endif
static int ioc_settimeout(unsigned int fd, unsigned int cmd, unsigned long arg)
{
return rw_long(fd, AUTOFS_IOC_SETTIMEOUT, arg);
}
#ifdef CONFIG_BLOCK
/* Fix sizeof(sizeof()) breakage */
#define BLKBSZGET_32 _IOR(0x12,112,int)
#define BLKBSZSET_32 _IOW(0x12,113,int)
@ -1667,6 +1558,7 @@ static int do_blkgetsize64(unsigned int fd, unsigned int cmd,
{
return sys_ioctl(fd, BLKGETSIZE64, (unsigned long)compat_ptr(arg));
}
#endif
/* Bluetooth ioctls */
#define HCIUARTSETPROTO _IOW('U', 200, int)
@ -1687,6 +1579,7 @@ static int do_blkgetsize64(unsigned int fd, unsigned int cmd,
#define HIDPGETCONNLIST _IOR('H', 210, int)
#define HIDPGETCONNINFO _IOR('H', 211, int)
#ifdef CONFIG_BLOCK
struct floppy_struct32 {
compat_uint_t size;
compat_uint_t sect;
@ -2011,6 +1904,7 @@ out:
kfree(karg);
return err;
}
#endif
struct mtd_oob_buf32 {
u_int32_t start;
@ -2052,61 +1946,7 @@ static int mtd_rw_oob(unsigned int fd, unsigned int cmd, unsigned long arg)
return err;
}
#define VFAT_IOCTL_READDIR_BOTH32 _IOR('r', 1, struct compat_dirent[2])
#define VFAT_IOCTL_READDIR_SHORT32 _IOR('r', 2, struct compat_dirent[2])
static long
put_dirent32 (struct dirent *d, struct compat_dirent __user *d32)
{
if (!access_ok(VERIFY_WRITE, d32, sizeof(struct compat_dirent)))
return -EFAULT;
__put_user(d->d_ino, &d32->d_ino);
__put_user(d->d_off, &d32->d_off);
__put_user(d->d_reclen, &d32->d_reclen);
if (__copy_to_user(d32->d_name, d->d_name, d->d_reclen))
return -EFAULT;
return 0;
}
static int vfat_ioctl32(unsigned fd, unsigned cmd, unsigned long arg)
{
struct compat_dirent __user *p = compat_ptr(arg);
int ret;
mm_segment_t oldfs = get_fs();
struct dirent d[2];
switch(cmd)
{
case VFAT_IOCTL_READDIR_BOTH32:
cmd = VFAT_IOCTL_READDIR_BOTH;
break;
case VFAT_IOCTL_READDIR_SHORT32:
cmd = VFAT_IOCTL_READDIR_SHORT;
break;
}
set_fs(KERNEL_DS);
ret = sys_ioctl(fd,cmd,(unsigned long)&d);
set_fs(oldfs);
if (ret >= 0) {
ret |= put_dirent32(&d[0], p);
ret |= put_dirent32(&d[1], p + 1);
}
return ret;
}
#define REISERFS_IOC_UNPACK32 _IOW(0xCD,1,int)
static int reiserfs_ioctl32(unsigned fd, unsigned cmd, unsigned long ptr)
{
if (cmd == REISERFS_IOC_UNPACK32)
cmd = REISERFS_IOC_UNPACK;
return sys_ioctl(fd,cmd,ptr);
}
#ifdef CONFIG_BLOCK
struct raw32_config_request
{
compat_int_t raw_minor;
@ -2171,6 +2011,7 @@ static int raw_ioctl(unsigned fd, unsigned cmd, unsigned long arg)
}
return ret;
}
#endif /* CONFIG_BLOCK */
struct serial_struct32 {
compat_int_t type;
@ -2777,6 +2618,7 @@ HANDLE_IOCTL(SIOCBRDELIF, dev_ifsioc)
HANDLE_IOCTL(SIOCRTMSG, ret_einval)
HANDLE_IOCTL(SIOCGSTAMP, do_siocgstamp)
#endif
#ifdef CONFIG_BLOCK
HANDLE_IOCTL(HDIO_GETGEO, hdio_getgeo)
HANDLE_IOCTL(BLKRAGET, w_long)
HANDLE_IOCTL(BLKGETSIZE, w_long)
@ -2802,16 +2644,17 @@ HANDLE_IOCTL(FDGETFDCSTAT32, fd_ioctl_trans)
HANDLE_IOCTL(FDWERRORGET32, fd_ioctl_trans)
HANDLE_IOCTL(SG_IO,sg_ioctl_trans)
HANDLE_IOCTL(SG_GET_REQUEST_TABLE, sg_grt_trans)
#endif
HANDLE_IOCTL(PPPIOCGIDLE32, ppp_ioctl_trans)
HANDLE_IOCTL(PPPIOCSCOMPRESS32, ppp_ioctl_trans)
HANDLE_IOCTL(PPPIOCSPASS32, ppp_sock_fprog_ioctl_trans)
HANDLE_IOCTL(PPPIOCSACTIVE32, ppp_sock_fprog_ioctl_trans)
#ifdef CONFIG_BLOCK
HANDLE_IOCTL(MTIOCGET32, mt_ioctl_trans)
HANDLE_IOCTL(MTIOCPOS32, mt_ioctl_trans)
HANDLE_IOCTL(CDROMREADAUDIO, cdrom_ioctl_trans)
HANDLE_IOCTL(CDROM_SEND_PACKET, cdrom_ioctl_trans)
HANDLE_IOCTL(LOOP_SET_STATUS, loop_status)
HANDLE_IOCTL(LOOP_GET_STATUS, loop_status)
#endif
#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int)
HANDLE_IOCTL(AUTOFS_IOC_SETTIMEOUT32, ioc_settimeout)
#ifdef CONFIG_VT
@ -2821,19 +2664,6 @@ HANDLE_IOCTL(PIO_UNIMAP, do_unimap_ioctl)
HANDLE_IOCTL(GIO_UNIMAP, do_unimap_ioctl)
HANDLE_IOCTL(KDFONTOP, do_kdfontop_ioctl)
#endif
HANDLE_IOCTL(EXT2_IOC32_GETFLAGS, do_ext2_ioctl)
HANDLE_IOCTL(EXT2_IOC32_SETFLAGS, do_ext2_ioctl)
HANDLE_IOCTL(EXT2_IOC32_GETVERSION, do_ext2_ioctl)
HANDLE_IOCTL(EXT2_IOC32_SETVERSION, do_ext2_ioctl)
HANDLE_IOCTL(EXT3_IOC32_GETVERSION, do_ext3_ioctl)
HANDLE_IOCTL(EXT3_IOC32_SETVERSION, do_ext3_ioctl)
HANDLE_IOCTL(EXT3_IOC32_GETRSVSZ, do_ext3_ioctl)
HANDLE_IOCTL(EXT3_IOC32_SETRSVSZ, do_ext3_ioctl)
HANDLE_IOCTL(EXT3_IOC32_GROUP_EXTEND, do_ext3_ioctl)
COMPATIBLE_IOCTL(EXT3_IOC_GROUP_ADD)
#ifdef CONFIG_JBD_DEBUG
HANDLE_IOCTL(EXT3_IOC32_WAIT_FOR_READONLY, do_ext3_ioctl)
#endif
/* One SMB ioctl needs translations. */
#define SMB_IOC_GETMOUNTUID_32 _IOR('u', 1, compat_uid_t)
HANDLE_IOCTL(SMB_IOC_GETMOUNTUID_32, do_smb_getmountuid)
@ -2863,16 +2693,14 @@ HANDLE_IOCTL(SONET_SETFRAMING, do_atm_ioctl)
HANDLE_IOCTL(SONET_GETFRAMING, do_atm_ioctl)
HANDLE_IOCTL(SONET_GETFRSENSE, do_atm_ioctl)
/* block stuff */
#ifdef CONFIG_BLOCK
HANDLE_IOCTL(BLKBSZGET_32, do_blkbszget)
HANDLE_IOCTL(BLKBSZSET_32, do_blkbszset)
HANDLE_IOCTL(BLKGETSIZE64_32, do_blkgetsize64)
/* vfat */
HANDLE_IOCTL(VFAT_IOCTL_READDIR_BOTH32, vfat_ioctl32)
HANDLE_IOCTL(VFAT_IOCTL_READDIR_SHORT32, vfat_ioctl32)
HANDLE_IOCTL(REISERFS_IOC_UNPACK32, reiserfs_ioctl32)
/* Raw devices */
HANDLE_IOCTL(RAW_SETBIND, raw_ioctl)
HANDLE_IOCTL(RAW_GETBIND, raw_ioctl)
#endif
/* Serial */
HANDLE_IOCTL(TIOCGSERIAL, serial_struct_ioctl)
HANDLE_IOCTL(TIOCSSERIAL, serial_struct_ioctl)

4
fs/dcache.c
View File

@ -32,6 +32,7 @@
#include <linux/seqlock.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
#include "internal.h"
int sysctl_vfs_cache_pressure __read_mostly = 100;
@ -1877,9 +1878,6 @@ kmem_cache_t *filp_cachep __read_mostly;
EXPORT_SYMBOL(d_genocide);
extern void bdev_cache_init(void);
extern void chrdev_init(void);
void __init vfs_caches_init_early(void)
{
dcache_init_early();

3
fs/ext2/dir.c
View File

@ -661,5 +661,8 @@ const struct file_operations ext2_dir_operations = {
.read = generic_read_dir,
.readdir = ext2_readdir,
.ioctl = ext2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext2_compat_ioctl,
#endif
.fsync = ext2_sync_file,
};

1
fs/ext2/ext2.h
View File

@ -137,6 +137,7 @@ extern void ext2_set_inode_flags(struct inode *inode);
/* ioctl.c */
extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
unsigned long);
extern long ext2_compat_ioctl(struct file *, unsigned int, unsigned long);
/* namei.c */
struct dentry *ext2_get_parent(struct dentry *child);

6
fs/ext2/file.c
View File

@ -46,6 +46,9 @@ const struct file_operations ext2_file_operations = {
.aio_read = generic_file_aio_read,
.aio_write = generic_file_aio_write,
.ioctl = ext2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext2_compat_ioctl,
#endif
.mmap = generic_file_mmap,
.open = generic_file_open,
.release = ext2_release_file,
@ -63,6 +66,9 @@ const struct file_operations ext2_xip_file_operations = {
.read = xip_file_read,
.write = xip_file_write,
.ioctl = ext2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext2_compat_ioctl,
#endif
.mmap = xip_file_mmap,
.open = generic_file_open,
.release = ext2_release_file,

32
fs/ext2/ioctl.c
View File

@ -11,6 +11,8 @@
#include <linux/capability.h>
#include <linux/time.h>
#include <linux/sched.h>
#include <linux/compat.h>
#include <linux/smp_lock.h>
#include <asm/current.h>
#include <asm/uaccess.h>
@ -80,3 +82,33 @@ int ext2_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
return -ENOTTY;
}
}
#ifdef CONFIG_COMPAT
long ext2_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file->f_dentry->d_inode;
int ret;
/* These are just misnamed, they actually get/put from/to user an int */
switch (cmd) {
case EXT2_IOC32_GETFLAGS:
cmd = EXT2_IOC_GETFLAGS;
break;
case EXT2_IOC32_SETFLAGS:
cmd = EXT2_IOC_SETFLAGS;
break;
case EXT2_IOC32_GETVERSION:
cmd = EXT2_IOC_GETVERSION;
break;
case EXT2_IOC32_SETVERSION:
cmd = EXT2_IOC_SETVERSION;
break;
default:
return -ENOIOCTLCMD;
}
lock_kernel();
ret = ext2_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
unlock_kernel();
return ret;
}
#endif

3
fs/ext3/dir.c
View File

@ -44,6 +44,9 @@ const struct file_operations ext3_dir_operations = {
.read = generic_read_dir,
.readdir = ext3_readdir, /* we take BKL. needed?*/
.ioctl = ext3_ioctl, /* BKL held */
#ifdef CONFIG_COMPAT
.compat_ioctl = ext3_compat_ioctl,
#endif
.fsync = ext3_sync_file, /* BKL held */
#ifdef CONFIG_EXT3_INDEX
.release = ext3_release_dir,

3
fs/ext3/file.c
View File

@ -114,6 +114,9 @@ const struct file_operations ext3_file_operations = {
.readv = generic_file_readv,
.writev = generic_file_writev,
.ioctl = ext3_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext3_compat_ioctl,
#endif
.mmap = generic_file_mmap,
.open = generic_file_open,
.release = ext3_release_file,

5
fs/ext3/inode.c
View File

@ -36,6 +36,7 @@
#include <linux/writeback.h>
#include <linux/mpage.h>
#include <linux/uio.h>
#include <linux/bio.h>
#include "xattr.h"
#include "acl.h"
@ -1073,7 +1074,7 @@ struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode,
return bh;
if (buffer_uptodate(bh))
return bh;
ll_rw_block(READ, 1, &bh);
ll_rw_block(READ_META, 1, &bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
@ -2540,7 +2541,7 @@ make_io:
*/
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
submit_bh(READ, bh);
submit_bh(READ_META, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
ext3_error(inode->i_sb, "ext3_get_inode_loc",

55
fs/ext3/ioctl.c
View File

@ -13,9 +13,10 @@
#include <linux/ext3_fs.h>
#include <linux/ext3_jbd.h>
#include <linux/time.h>
#include <linux/compat.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
unsigned long arg)
{
@ -252,3 +253,55 @@ flags_err:
return -ENOTTY;
}
}
#ifdef CONFIG_COMPAT
long ext3_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file->f_dentry->d_inode;
int ret;
/* These are just misnamed, they actually get/put from/to user an int */
switch (cmd) {
case EXT3_IOC32_GETFLAGS:
cmd = EXT3_IOC_GETFLAGS;
break;
case EXT3_IOC32_SETFLAGS:
cmd = EXT3_IOC_SETFLAGS;
break;
case EXT3_IOC32_GETVERSION:
cmd = EXT3_IOC_GETVERSION;
break;
case EXT3_IOC32_SETVERSION:
cmd = EXT3_IOC_SETVERSION;
break;
case EXT3_IOC32_GROUP_EXTEND:
cmd = EXT3_IOC_GROUP_EXTEND;
break;
case EXT3_IOC32_GETVERSION_OLD:
cmd = EXT3_IOC_GETVERSION_OLD;
break;
case EXT3_IOC32_SETVERSION_OLD:
cmd = EXT3_IOC_SETVERSION_OLD;
break;
#ifdef CONFIG_JBD_DEBUG
case EXT3_IOC32_WAIT_FOR_READONLY:
cmd = EXT3_IOC_WAIT_FOR_READONLY;
break;
#endif
case EXT3_IOC32_GETRSVSZ:
cmd = EXT3_IOC_GETRSVSZ;
break;
case EXT3_IOC32_SETRSVSZ:
cmd = EXT3_IOC_SETRSVSZ;
break;
case EXT3_IOC_GROUP_ADD:
break;
default:
return -ENOIOCTLCMD;
}
lock_kernel();
ret = ext3_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
unlock_kernel();
return ret;
}
#endif

3
fs/ext3/namei.c
View File

@ -35,6 +35,7 @@
#include <linux/string.h>
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include <linux/bio.h>
#include <linux/smp_lock.h>
#include "namei.h"
@ -870,7 +871,7 @@ restart:
bh = ext3_getblk(NULL, dir, b++, 0, &err);
bh_use[ra_max] = bh;
if (bh)
ll_rw_block(READ, 1, &bh);
ll_rw_block(READ_META, 1, &bh);
}
}
if ((bh = bh_use[ra_ptr++]) == NULL)

56
fs/fat/dir.c
View File

@ -20,6 +20,7 @@
#include <linux/dirent.h>
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
static inline loff_t fat_make_i_pos(struct super_block *sb,
@ -741,10 +742,65 @@ static int fat_dir_ioctl(struct inode * inode, struct file * filp,
return ret;
}
#ifdef CONFIG_COMPAT
#define VFAT_IOCTL_READDIR_BOTH32 _IOR('r', 1, struct compat_dirent[2])
#define VFAT_IOCTL_READDIR_SHORT32 _IOR('r', 2, struct compat_dirent[2])
static long fat_compat_put_dirent32(struct dirent *d,
struct compat_dirent __user *d32)
{
if (!access_ok(VERIFY_WRITE, d32, sizeof(struct compat_dirent)))
return -EFAULT;
__put_user(d->d_ino, &d32->d_ino);
__put_user(d->d_off, &d32->d_off);
__put_user(d->d_reclen, &d32->d_reclen);
if (__copy_to_user(d32->d_name, d->d_name, d->d_reclen))
return -EFAULT;
return 0;
}
static long fat_compat_dir_ioctl(struct file *file, unsigned cmd,
unsigned long arg)
{
struct compat_dirent __user *p = compat_ptr(arg);
int ret;
mm_segment_t oldfs = get_fs();
struct dirent d[2];
switch (cmd) {
case VFAT_IOCTL_READDIR_BOTH32:
cmd = VFAT_IOCTL_READDIR_BOTH;
break;
case VFAT_IOCTL_READDIR_SHORT32:
cmd = VFAT_IOCTL_READDIR_SHORT;
break;
default:
return -ENOIOCTLCMD;
}
set_fs(KERNEL_DS);
lock_kernel();
ret = fat_dir_ioctl(file->f_dentry->d_inode, file,
cmd, (unsigned long) &d);
unlock_kernel();
set_fs(oldfs);
if (ret >= 0) {
ret |= fat_compat_put_dirent32(&d[0], p);
ret |= fat_compat_put_dirent32(&d[1], p + 1);
}
return ret;
}
#endif /* CONFIG_COMPAT */
const struct file_operations fat_dir_operations = {
.read = generic_read_dir,
.readdir = fat_readdir,
.ioctl = fat_dir_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = fat_compat_dir_ioctl,
#endif
.fsync = file_fsync,
};

9
fs/fs-writeback.c
View File

@ -22,8 +22,7 @@
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/buffer_head.h>
extern struct super_block *blockdev_superblock;
#include "internal.h"
/**
* __mark_inode_dirty - internal function
@ -320,7 +319,7 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
if (!bdi_cap_writeback_dirty(bdi)) {
list_move(&inode->i_list, &sb->s_dirty);
if (sb == blockdev_superblock) {
if (sb_is_blkdev_sb(sb)) {
/*
* Dirty memory-backed blockdev: the ramdisk
* driver does this. Skip just this inode
@ -337,14 +336,14 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
if (wbc->nonblocking && bdi_write_congested(bdi)) {
wbc->encountered_congestion = 1;
if (sb != blockdev_superblock)
if (!sb_is_blkdev_sb(sb))
break; /* Skip a congested fs */
list_move(&inode->i_list, &sb->s_dirty);
continue; /* Skip a congested blockdev */
}
if (wbc->bdi && bdi != wbc->bdi) {
if (sb != blockdev_superblock)
if (!sb_is_blkdev_sb(sb))
break; /* fs has the wrong queue */
list_move(&inode->i_list, &sb->s_dirty);
continue; /* blockdev has wrong queue */

8
fs/hfsplus/hfsplus_fs.h
View File

@ -246,12 +246,8 @@ struct hfsplus_readdir_data {
/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
* chattr/lsattr */
#define HFSPLUS_IOC_EXT2_GETFLAGS _IOR('f', 1, long)
#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long)
#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */
#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */
#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */
#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS
#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS
/*

17
fs/hfsplus/ioctl.c
View File

@ -28,11 +28,11 @@ int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
case HFSPLUS_IOC_EXT2_GETFLAGS:
flags = 0;
if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
flags |= EXT2_FLAG_IMMUTABLE; /* EXT2_IMMUTABLE_FL */
flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */
if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
flags |= EXT2_FLAG_APPEND; /* EXT2_APPEND_FL */
flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */
if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
flags |= EXT2_FLAG_NODUMP; /* EXT2_NODUMP_FL */
flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
return put_user(flags, (int __user *)arg);
case HFSPLUS_IOC_EXT2_SETFLAGS: {
if (IS_RDONLY(inode))
@ -44,32 +44,31 @@ int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
if (get_user(flags, (int __user *)arg))
return -EFAULT;
if (flags & (EXT2_FLAG_IMMUTABLE|EXT2_FLAG_APPEND) ||
if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
if (!capable(CAP_LINUX_IMMUTABLE))
return -EPERM;
}
/* don't silently ignore unsupported ext2 flags */
if (flags & ~(EXT2_FLAG_IMMUTABLE|EXT2_FLAG_APPEND|
EXT2_FLAG_NODUMP))
if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL))
return -EOPNOTSUPP;
if (flags & EXT2_FLAG_IMMUTABLE) { /* EXT2_IMMUTABLE_FL */
if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */
inode->i_flags |= S_IMMUTABLE;
HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
} else {
inode->i_flags &= ~S_IMMUTABLE;
HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
}
if (flags & EXT2_FLAG_APPEND) { /* EXT2_APPEND_FL */
if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */
inode->i_flags |= S_APPEND;
HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
} else {
inode->i_flags &= ~S_APPEND;
HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
}
if (flags & EXT2_FLAG_NODUMP) /* EXT2_NODUMP_FL */
if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */
HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
else
HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;

21
fs/inode.c
View File

@ -362,27 +362,6 @@ int invalidate_inodes(struct super_block * sb)
}
EXPORT_SYMBOL(invalidate_inodes);
int __invalidate_device(struct block_device *bdev)
{
struct super_block *sb = get_super(bdev);
int res = 0;
if (sb) {
/*
* no need to lock the super, get_super holds the
* read mutex so the filesystem cannot go away
* under us (->put_super runs with the write lock
* hold).
*/
shrink_dcache_sb(sb);
res = invalidate_inodes(sb);
drop_super(sb);
}
invalidate_bdev(bdev, 0);
return res;
}
EXPORT_SYMBOL(__invalidate_device);
static int can_unuse(struct inode *inode)
{

55
fs/internal.h Normal file
View File

@ -0,0 +1,55 @@
/* fs/ internal definitions
*
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/ioctl32.h>
struct super_block;
/*
* block_dev.c
*/
#ifdef CONFIG_BLOCK
extern struct super_block *blockdev_superblock;
extern void __init bdev_cache_init(void);
static inline int sb_is_blkdev_sb(struct super_block *sb)
{
return sb == blockdev_superblock;
}
#else
static inline void bdev_cache_init(void)
{
}
static inline int sb_is_blkdev_sb(struct super_block *sb)
{
return 0;
}
#endif
/*
* char_dev.c
*/
extern void __init chrdev_init(void);
/*
* compat_ioctl.c
*/
#ifdef CONFIG_COMPAT
extern struct ioctl_trans ioctl_start[];
extern int ioctl_table_size;
#endif
/*
* namespace.c
*/
extern int copy_mount_options(const void __user *, unsigned long *);

19
fs/ioprio.c
View File

@ -1,7 +1,7 @@
/*
* fs/ioprio.c
*
* Copyright (C) 2004 Jens Axboe <axboe@suse.de>
* Copyright (C) 2004 Jens Axboe <axboe@kernel.dk>
*
* Helper functions for setting/querying io priorities of processes. The
* system calls closely mimmick getpriority/setpriority, see the man page for
@ -47,8 +47,8 @@ static int set_task_ioprio(struct task_struct *task, int ioprio)
/* see wmb() in current_io_context() */
smp_read_barrier_depends();
if (ioc && ioc->set_ioprio)
ioc->set_ioprio(ioc, ioprio);
if (ioc)
ioc->ioprio_changed = 1;
task_unlock(task);
return 0;
@ -81,7 +81,12 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
}
ret = -ESRCH;
read_lock_irq(&tasklist_lock);
/*
* We want IOPRIO_WHO_PGRP/IOPRIO_WHO_USER to be "atomic",
* so we can't use rcu_read_lock(). See re-copy of ->ioprio
* in copy_process().
*/
read_lock(&tasklist_lock);
switch (which) {
case IOPRIO_WHO_PROCESS:
if (!who)
@ -124,7 +129,7 @@ free_uid:
ret = -EINVAL;
}
read_unlock_irq(&tasklist_lock);
read_unlock(&tasklist_lock);
return ret;
}
@ -170,7 +175,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
int ret = -ESRCH;
int tmpio;
read_lock_irq(&tasklist_lock);
read_lock(&tasklist_lock);
switch (which) {
case IOPRIO_WHO_PROCESS:
if (!who)
@ -221,7 +226,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
ret = -EINVAL;
}
read_unlock_irq(&tasklist_lock);
read_unlock(&tasklist_lock);
return ret;
}

15
fs/jfs/ioctl.c
View File

@ -6,7 +6,6 @@
*/
#include <linux/fs.h>
#include <linux/ext2_fs.h>
#include <linux/ctype.h>
#include <linux/capability.h>
#include <linux/time.h>
@ -22,13 +21,13 @@ static struct {
long jfs_flag;
long ext2_flag;
} jfs_map[] = {
{JFS_NOATIME_FL, EXT2_NOATIME_FL},
{JFS_DIRSYNC_FL, EXT2_DIRSYNC_FL},
{JFS_SYNC_FL, EXT2_SYNC_FL},
{JFS_SECRM_FL, EXT2_SECRM_FL},
{JFS_UNRM_FL, EXT2_UNRM_FL},
{JFS_APPEND_FL, EXT2_APPEND_FL},
{JFS_IMMUTABLE_FL, EXT2_IMMUTABLE_FL},
{JFS_NOATIME_FL, FS_NOATIME_FL},
{JFS_DIRSYNC_FL, FS_DIRSYNC_FL},
{JFS_SYNC_FL, FS_SYNC_FL},
{JFS_SECRM_FL, FS_SECRM_FL},
{JFS_UNRM_FL, FS_UNRM_FL},
{JFS_APPEND_FL, FS_APPEND_FL},
{JFS_IMMUTABLE_FL, FS_IMMUTABLE_FL},
{0, 0},
};

2
fs/mpage.c
View File

@ -693,6 +693,8 @@ out:
* the call was made get new I/O started against them. If wbc->sync_mode is
* WB_SYNC_ALL then we were called for data integrity and we must wait for
* existing IO to complete.
*
* If you fix this you should check generic_writepages() also!
*/
int
mpage_writepages(struct address_space *mapping,

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