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block-5.8-2020-06-11

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Merge tag 'block-5.8-2020-06-11' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Some followup fixes for this merge window. In particular:

   - Seqcount write missing preemption disable for stats (Ahmed)

   - blktrace fixes (Chaitanya)

   - Redundant initializations (Colin)

   - Various small NVMe fixes (Chaitanya, Christoph, Daniel, Max,
     Niklas, Rikard)

   - loop flag bug regression fix (Martijn)

   - blk-mq tagging fixes (Christoph, Ming)"

* tag 'block-5.8-2020-06-11' of git://git.kernel.dk/linux-block:
  umem: remove redundant initialization of variable ret
  pktcdvd: remove redundant initialization of variable ret
  nvmet: fail outstanding host posted AEN req
  nvme-pci: use simple suspend when a HMB is enabled
  nvme-fc: don't call nvme_cleanup_cmd() for AENs
  nvmet-tcp: constify nvmet_tcp_ops
  nvme-tcp: constify nvme_tcp_mq_ops and nvme_tcp_admin_mq_ops
  nvme: do not call del_gendisk() on a disk that was never added
  blk-mq: fix blk_mq_all_tag_iter
  blk-mq: split out a __blk_mq_get_driver_tag helper
  blktrace: fix endianness for blk_log_remap()
  blktrace: fix endianness in get_pdu_int()
  blktrace: use errno instead of bi_status
  block: nr_sects_write(): Disable preemption on seqcount write
  block: remove the error argument to the block_bio_complete tracepoint
  loop: Fix wrong masking of status flags
  block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed
This commit is contained in:
Linus Torvalds 2020-06-11 16:07:33 -07:00
commit a58dfea297
19 changed files with 104 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
block/bio-integrity.c
View File

@ -281,7 +281,6 @@ bool bio_integrity_prep(struct bio *bio)
if (ret == 0) {
printk(KERN_ERR "could not attach integrity payload\n");
kfree(buf);
status = BLK_STS_RESOURCE;
goto err_end_io;
}

3
block/bio.c
View File

@ -1434,8 +1434,7 @@ again:
}
if (bio->bi_disk && bio_flagged(bio, BIO_TRACE_COMPLETION)) {
trace_block_bio_complete(bio->bi_disk->queue, bio,
blk_status_to_errno(bio->bi_status));
trace_block_bio_complete(bio->bi_disk->queue, bio);
bio_clear_flag(bio, BIO_TRACE_COMPLETION);
}

39
block/blk-mq-tag.c
View File

@ -191,6 +191,33 @@ found_tag:
return tag + tag_offset;
}
bool __blk_mq_get_driver_tag(struct request *rq)
{
struct sbitmap_queue *bt = &rq->mq_hctx->tags->bitmap_tags;
unsigned int tag_offset = rq->mq_hctx->tags->nr_reserved_tags;
bool shared = blk_mq_tag_busy(rq->mq_hctx);
int tag;
if (blk_mq_tag_is_reserved(rq->mq_hctx->sched_tags, rq->internal_tag)) {
bt = &rq->mq_hctx->tags->breserved_tags;
tag_offset = 0;
}
if (!hctx_may_queue(rq->mq_hctx, bt))
return false;
tag = __sbitmap_queue_get(bt);
if (tag == BLK_MQ_NO_TAG)
return false;
rq->tag = tag + tag_offset;
if (shared) {
rq->rq_flags |= RQF_MQ_INFLIGHT;
atomic_inc(&rq->mq_hctx->nr_active);
}
rq->mq_hctx->tags->rqs[rq->tag] = rq;
return true;
}
void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
unsigned int tag)
{
@ -269,6 +296,7 @@ struct bt_tags_iter_data {
#define BT_TAG_ITER_RESERVED (1 << 0)
#define BT_TAG_ITER_STARTED (1 << 1)
#define BT_TAG_ITER_STATIC_RQS (1 << 2)
static bool bt_tags_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
{
@ -282,9 +310,12 @@ static bool bt_tags_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
/*
* We can hit rq == NULL here, because the tagging functions
* test and set the bit before assining ->rqs[].
* test and set the bit before assigning ->rqs[].
*/
rq = tags->rqs[bitnr];
if (iter_data->flags & BT_TAG_ITER_STATIC_RQS)
rq = tags->static_rqs[bitnr];
else
rq = tags->rqs[bitnr];
if (!rq)
return true;
if ((iter_data->flags & BT_TAG_ITER_STARTED) &&
@ -339,11 +370,13 @@ static void __blk_mq_all_tag_iter(struct blk_mq_tags *tags,
* indicates whether or not @rq is a reserved request. Return
* true to continue iterating tags, false to stop.
* @priv: Will be passed as second argument to @fn.
*
* Caller has to pass the tag map from which requests are allocated.
*/
void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn,
void *priv)
{
return __blk_mq_all_tag_iter(tags, fn, priv, 0);
return __blk_mq_all_tag_iter(tags, fn, priv, BT_TAG_ITER_STATIC_RQS);
}
/**

8
block/blk-mq-tag.h
View File

@ -51,6 +51,14 @@ enum {
BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1,
};
bool __blk_mq_get_driver_tag(struct request *rq);
static inline bool blk_mq_get_driver_tag(struct request *rq)
{
if (rq->tag != BLK_MQ_NO_TAG)
return true;
return __blk_mq_get_driver_tag(rq);
}
extern bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *);
extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *);

29
block/blk-mq.c
View File

@ -1052,35 +1052,6 @@ static inline unsigned int queued_to_index(unsigned int queued)
return min(BLK_MQ_MAX_DISPATCH_ORDER - 1, ilog2(queued) + 1);
}
bool blk_mq_get_driver_tag(struct request *rq)
{
struct blk_mq_alloc_data data = {
.q = rq->q,
.hctx = rq->mq_hctx,
.flags = BLK_MQ_REQ_NOWAIT,
.cmd_flags = rq->cmd_flags,
};
bool shared;
if (rq->tag != BLK_MQ_NO_TAG)
return true;
if (blk_mq_tag_is_reserved(data.hctx->sched_tags, rq->internal_tag))
data.flags |= BLK_MQ_REQ_RESERVED;
shared = blk_mq_tag_busy(data.hctx);
rq->tag = blk_mq_get_tag(&data);
if (rq->tag >= 0) {
if (shared) {
rq->rq_flags |= RQF_MQ_INFLIGHT;
atomic_inc(&data.hctx->nr_active);
}
data.hctx->tags->rqs[rq->tag] = rq;
}
return rq->tag != BLK_MQ_NO_TAG;
}
static int blk_mq_dispatch_wake(wait_queue_entry_t *wait, unsigned mode,
int flags, void *key)
{

1
block/blk-mq.h
View File

@ -44,7 +44,6 @@ bool blk_mq_dispatch_rq_list(struct request_queue *, struct list_head *, bool);
void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
bool kick_requeue_list);
void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
bool blk_mq_get_driver_tag(struct request *rq);
struct request *blk_mq_dequeue_from_ctx(struct blk_mq_hw_ctx *hctx,
struct blk_mq_ctx *start);

2
block/blk.h
View File

@ -420,9 +420,11 @@ static inline sector_t part_nr_sects_read(struct hd_struct *part)
static inline void part_nr_sects_write(struct hd_struct *part, sector_t size)
{
#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
preempt_disable();
write_seqcount_begin(&part->nr_sects_seq);
part->nr_sects = size;
write_seqcount_end(&part->nr_sects_seq);
preempt_enable();
#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPTION)
preempt_disable();
part->nr_sects = size;

2
drivers/block/loop.c
View File

@ -1390,7 +1390,7 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
goto out_unfreeze;
/* Mask out flags that can't be set using LOOP_SET_STATUS. */
lo->lo_flags &= ~LOOP_SET_STATUS_SETTABLE_FLAGS;
lo->lo_flags &= LOOP_SET_STATUS_SETTABLE_FLAGS;
/* For those flags, use the previous values instead */
lo->lo_flags |= prev_lo_flags & ~LOOP_SET_STATUS_SETTABLE_FLAGS;
/* For flags that can't be cleared, use previous values too */

2
drivers/block/pktcdvd.c
View File

@ -1613,7 +1613,7 @@ static noinline_for_stack int pkt_get_last_written(struct pktcdvd_device *pd,
disc_information di;
track_information ti;
__u32 last_track;
int ret = -1;
int ret;
ret = pkt_get_disc_info(pd, &di);
if (ret)

2
drivers/block/umem.c
View File

@ -784,7 +784,7 @@ static const struct block_device_operations mm_fops = {
static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
int ret = -ENODEV;
int ret;
struct cardinfo *card = &cards[num_cards];
unsigned char mem_present;
unsigned char batt_status;

4
drivers/nvme/host/core.c
View File

@ -3669,7 +3669,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns->disk = disk;
if (__nvme_revalidate_disk(disk, id))
goto out_free_disk;
goto out_put_disk;
if ((ctrl->quirks & NVME_QUIRK_LIGHTNVM) && id->vs[0] == 0x1) {
ret = nvme_nvm_register(ns, disk_name, node);
@ -3696,8 +3696,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
/* prevent double queue cleanup */
ns->disk->queue = NULL;
put_disk(ns->disk);
out_free_disk:
del_gendisk(ns->disk);
out_unlink_ns:
mutex_lock(&ctrl->subsys->lock);
list_del_rcu(&ns->siblings);

5
drivers/nvme/host/fc.c
View File

@ -2634,10 +2634,11 @@ nvme_fc_start_fcp_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue,
opstate = atomic_xchg(&op->state, FCPOP_STATE_COMPLETE);
__nvme_fc_fcpop_chk_teardowns(ctrl, op, opstate);
if (!(op->flags & FCOP_FLAGS_AEN))
if (!(op->flags & FCOP_FLAGS_AEN)) {
nvme_fc_unmap_data(ctrl, op->rq, op);
nvme_cleanup_cmd(op->rq);
}
nvme_cleanup_cmd(op->rq);
nvme_fc_ctrl_put(ctrl);
if (ctrl->rport->remoteport.port_state == FC_OBJSTATE_ONLINE &&

3
drivers/nvme/host/nvme.h
View File

@ -599,8 +599,7 @@ static inline void nvme_trace_bio_complete(struct request *req,
struct nvme_ns *ns = req->q->queuedata;
if (req->cmd_flags & REQ_NVME_MPATH)
trace_block_bio_complete(ns->head->disk->queue,
req->bio, status);
trace_block_bio_complete(ns->head->disk->queue, req->bio);
}
extern struct device_attribute dev_attr_ana_grpid;

6
drivers/nvme/host/pci.c
View File

@ -2950,9 +2950,15 @@ static int nvme_suspend(struct device *dev)
* the PCI bus layer to put it into D3 in order to take the PCIe link
* down, so as to allow the platform to achieve its minimum low-power
* state (which may not be possible if the link is up).
*
* If a host memory buffer is enabled, shut down the device as the NVMe
* specification allows the device to access the host memory buffer in
* host DRAM from all power states, but hosts will fail access to DRAM
* during S3.
*/
if (pm_suspend_via_firmware() || !ctrl->npss ||
!pcie_aspm_enabled(pdev) ||
ndev->nr_host_mem_descs ||
(ndev->ctrl.quirks & NVME_QUIRK_SIMPLE_SUSPEND))
return nvme_disable_prepare_reset(ndev, true);

8
drivers/nvme/host/tcp.c
View File

@ -131,8 +131,8 @@ struct nvme_tcp_ctrl {
static LIST_HEAD(nvme_tcp_ctrl_list);
static DEFINE_MUTEX(nvme_tcp_ctrl_mutex);
static struct workqueue_struct *nvme_tcp_wq;
static struct blk_mq_ops nvme_tcp_mq_ops;
static struct blk_mq_ops nvme_tcp_admin_mq_ops;
static const struct blk_mq_ops nvme_tcp_mq_ops;
static const struct blk_mq_ops nvme_tcp_admin_mq_ops;
static int nvme_tcp_try_send(struct nvme_tcp_queue *queue);
static inline struct nvme_tcp_ctrl *to_tcp_ctrl(struct nvme_ctrl *ctrl)
@ -2301,7 +2301,7 @@ static int nvme_tcp_poll(struct blk_mq_hw_ctx *hctx)
return queue->nr_cqe;
}
static struct blk_mq_ops nvme_tcp_mq_ops = {
static const struct blk_mq_ops nvme_tcp_mq_ops = {
.queue_rq = nvme_tcp_queue_rq,
.complete = nvme_complete_rq,
.init_request = nvme_tcp_init_request,
@ -2312,7 +2312,7 @@ static struct blk_mq_ops nvme_tcp_mq_ops = {
.poll = nvme_tcp_poll,
};
static struct blk_mq_ops nvme_tcp_admin_mq_ops = {
static const struct blk_mq_ops nvme_tcp_admin_mq_ops = {
.queue_rq = nvme_tcp_queue_rq,
.complete = nvme_complete_rq,
.init_request = nvme_tcp_init_request,

27
drivers/nvme/target/core.c
View File

@ -129,7 +129,22 @@ static u32 nvmet_async_event_result(struct nvmet_async_event *aen)
return aen->event_type | (aen->event_info << 8) | (aen->log_page << 16);
}
static void nvmet_async_events_process(struct nvmet_ctrl *ctrl, u16 status)
static void nvmet_async_events_failall(struct nvmet_ctrl *ctrl)
{
u16 status = NVME_SC_INTERNAL | NVME_SC_DNR;
struct nvmet_req *req;
mutex_lock(&ctrl->lock);
while (ctrl->nr_async_event_cmds) {
req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds];
mutex_unlock(&ctrl->lock);
nvmet_req_complete(req, status);
mutex_lock(&ctrl->lock);
}
mutex_unlock(&ctrl->lock);
}
static void nvmet_async_events_process(struct nvmet_ctrl *ctrl)
{
struct nvmet_async_event *aen;
struct nvmet_req *req;
@ -139,15 +154,14 @@ static void nvmet_async_events_process(struct nvmet_ctrl *ctrl, u16 status)
aen = list_first_entry(&ctrl->async_events,
struct nvmet_async_event, entry);
req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds];
if (status == 0)
nvmet_set_result(req, nvmet_async_event_result(aen));
nvmet_set_result(req, nvmet_async_event_result(aen));
list_del(&aen->entry);
kfree(aen);
mutex_unlock(&ctrl->lock);
trace_nvmet_async_event(ctrl, req->cqe->result.u32);
nvmet_req_complete(req, status);
nvmet_req_complete(req, 0);
mutex_lock(&ctrl->lock);
}
mutex_unlock(&ctrl->lock);
@ -170,7 +184,7 @@ static void nvmet_async_event_work(struct work_struct *work)
struct nvmet_ctrl *ctrl =
container_of(work, struct nvmet_ctrl, async_event_work);
nvmet_async_events_process(ctrl, 0);
nvmet_async_events_process(ctrl);
}
void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
@ -779,7 +793,6 @@ static void nvmet_confirm_sq(struct percpu_ref *ref)
void nvmet_sq_destroy(struct nvmet_sq *sq)
{
u16 status = NVME_SC_INTERNAL | NVME_SC_DNR;
struct nvmet_ctrl *ctrl = sq->ctrl;
/*
@ -787,7 +800,7 @@ void nvmet_sq_destroy(struct nvmet_sq *sq)
* queue doesn't have outstanding requests on it.
*/
if (ctrl && ctrl->sqs && ctrl->sqs[0] == sq)
nvmet_async_events_process(ctrl, status);
nvmet_async_events_failall(ctrl);
percpu_ref_kill_and_confirm(&sq->ref, nvmet_confirm_sq);
wait_for_completion(&sq->confirm_done);
wait_for_completion(&sq->free_done);

4
drivers/nvme/target/tcp.c
View File

@ -153,7 +153,7 @@ static LIST_HEAD(nvmet_tcp_queue_list);
static DEFINE_MUTEX(nvmet_tcp_queue_mutex);
static struct workqueue_struct *nvmet_tcp_wq;
static struct nvmet_fabrics_ops nvmet_tcp_ops;
static const struct nvmet_fabrics_ops nvmet_tcp_ops;
static void nvmet_tcp_free_cmd(struct nvmet_tcp_cmd *c);
static void nvmet_tcp_finish_cmd(struct nvmet_tcp_cmd *cmd);
@ -1713,7 +1713,7 @@ static void nvmet_tcp_disc_port_addr(struct nvmet_req *req,
}
}
static struct nvmet_fabrics_ops nvmet_tcp_ops = {
static const struct nvmet_fabrics_ops nvmet_tcp_ops = {
.owner = THIS_MODULE,
.type = NVMF_TRTYPE_TCP,
.msdbd = 1,

6
include/trace/events/block.h
View File

@ -261,9 +261,9 @@ TRACE_EVENT(block_bio_bounce,
*/
TRACE_EVENT(block_bio_complete,
TP_PROTO(struct request_queue *q, struct bio *bio, int error),
TP_PROTO(struct request_queue *q, struct bio *bio),
TP_ARGS(q, bio, error),
TP_ARGS(q, bio),
TP_STRUCT__entry(
__field( dev_t, dev )
@ -277,7 +277,7 @@ TRACE_EVENT(block_bio_complete,
__entry->dev = bio_dev(bio);
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
__entry->error = error;
__entry->error = blk_status_to_errno(bio->bi_status);
blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),

36
kernel/trace/blktrace.c
View File

@ -885,10 +885,10 @@ static void blk_add_trace_bio_bounce(void *ignore,
}
static void blk_add_trace_bio_complete(void *ignore,
struct request_queue *q, struct bio *bio,
int error)
struct request_queue *q, struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_COMPLETE, error);
blk_add_trace_bio(q, bio, BLK_TA_COMPLETE,
blk_status_to_errno(bio->bi_status));
}
static void blk_add_trace_bio_backmerge(void *ignore,
@ -995,8 +995,10 @@ static void blk_add_trace_split(void *ignore,
__blk_add_trace(bt, bio->bi_iter.bi_sector,
bio->bi_iter.bi_size, bio_op(bio), bio->bi_opf,
BLK_TA_SPLIT, bio->bi_status, sizeof(rpdu),
&rpdu, blk_trace_bio_get_cgid(q, bio));
BLK_TA_SPLIT,
blk_status_to_errno(bio->bi_status),
sizeof(rpdu), &rpdu,
blk_trace_bio_get_cgid(q, bio));
}
rcu_read_unlock();
}
@ -1033,7 +1035,8 @@ static void blk_add_trace_bio_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
bio_op(bio), bio->bi_opf, BLK_TA_REMAP, bio->bi_status,
bio_op(bio), bio->bi_opf, BLK_TA_REMAP,
blk_status_to_errno(bio->bi_status),
sizeof(r), &r, blk_trace_bio_get_cgid(q, bio));
rcu_read_unlock();
}
@ -1253,21 +1256,10 @@ static inline __u16 t_error(const struct trace_entry *ent)
static __u64 get_pdu_int(const struct trace_entry *ent, bool has_cg)
{
const __u64 *val = pdu_start(ent, has_cg);
const __be64 *val = pdu_start(ent, has_cg);
return be64_to_cpu(*val);
}
static void get_pdu_remap(const struct trace_entry *ent,
struct blk_io_trace_remap *r, bool has_cg)
{
const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg);
__u64 sector_from = __r->sector_from;
r->device_from = be32_to_cpu(__r->device_from);
r->device_to = be32_to_cpu(__r->device_to);
r->sector_from = be64_to_cpu(sector_from);
}
typedef void (blk_log_action_t) (struct trace_iterator *iter, const char *act,
bool has_cg);
@ -1407,13 +1399,13 @@ static void blk_log_with_error(struct trace_seq *s,
static void blk_log_remap(struct trace_seq *s, const struct trace_entry *ent, bool has_cg)
{
struct blk_io_trace_remap r = { .device_from = 0, };
const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg);
get_pdu_remap(ent, &r, has_cg);
trace_seq_printf(s, "%llu + %u <- (%d,%d) %llu\n",
t_sector(ent), t_sec(ent),
MAJOR(r.device_from), MINOR(r.device_from),
(unsigned long long)r.sector_from);
MAJOR(be32_to_cpu(__r->device_from)),
MINOR(be32_to_cpu(__r->device_from)),
be64_to_cpu(__r->sector_from));
}
static void blk_log_plug(struct trace_seq *s, const struct trace_entry *ent, bool has_cg)