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Merge tag 'for-5.19/block-2022-05-22' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Here are the core block changes for 5.19. This contains:

   - blk-throttle accounting fix (Laibin)

   - Series removing redundant assignments (Michal)

   - Expose bio cache via the bio_set, so that DM can use it (Mike)

   - Finish off the bio allocation interface cleanups by dealing with
     the weirdest member of the family. bio_kmalloc combines a kmalloc
     for the bio and bio_vecs with a hidden bio_init call and magic
     cleanup semantics (Christoph)

   - Clean up the block layer API so that APIs consumed by file systems
     are (almost) only struct block_device based, so that file systems
     don't have to poke into block layer internals like the
     request_queue (Christoph)

   - Clean up the blk_execute_rq* API (Christoph)

   - Clean up various lose end in the blk-cgroup code to make it easier
     to follow in preparation of reworking the blkcg assignment for bios
     (Christoph)

   - Fix use-after-free issues in BFQ when processes with merged queues
     get moved to different cgroups (Jan)

   - BFQ fixes (Jan)

   - Various fixes and cleanups (Bart, Chengming, Fanjun, Julia, Ming,
     Wolfgang, me)"

* tag 'for-5.19/block-2022-05-22' of git://git.kernel.dk/linux-block: (83 commits)
  blk-mq: fix typo in comment
  bfq: Remove bfq_requeue_request_body()
  bfq: Remove superfluous conversion from RQ_BIC()
  bfq: Allow current waker to defend against a tentative one
  bfq: Relax waker detection for shared queues
  blk-cgroup: delete rcu_read_lock_held() WARN_ON_ONCE()
  blk-throttle: Set BIO_THROTTLED when bio has been throttled
  blk-cgroup: Remove unnecessary rcu_read_lock/unlock()
  blk-cgroup: always terminate io.stat lines
  block, bfq: make bfq_has_work() more accurate
  block, bfq: protect 'bfqd->queued' by 'bfqd->lock'
  block: cleanup the VM accounting in submit_bio
  block: Fix the bio.bi_opf comment
  block: reorder the REQ_ flags
  blk-iocost: combine local_stat and desc_stat to stat
  block: improve the error message from bio_check_eod
  block: allow passing a NULL bdev to bio_alloc_clone/bio_init_clone
  block: remove superfluous calls to blkcg_bio_issue_init
  kthread: unexport kthread_blkcg
  blk-cgroup: cleanup blkcg_maybe_throttle_current
  ...
This commit is contained in:
Linus Torvalds 2022-05-23 13:56:39 -07:00
commit 115cd47132
127 changed files with 1254 additions and 1512 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -483,7 +483,6 @@ static void ubd_handler(void)
if ((io_req->error == BLK_STS_NOTSUPP) && (req_op(io_req->req) == REQ_OP_DISCARD)) {
blk_queue_max_discard_sectors(io_req->req->q, 0);
blk_queue_max_write_zeroes_sectors(io_req->req->q, 0);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, io_req->req->q);
}
blk_mq_end_request(io_req->req, io_req->error);
kfree(io_req);
@ -803,7 +802,6 @@ static int ubd_open_dev(struct ubd *ubd_dev)
ubd_dev->queue->limits.discard_alignment = SECTOR_SIZE;
blk_queue_max_discard_sectors(ubd_dev->queue, UBD_MAX_REQUEST);
blk_queue_max_write_zeroes_sectors(ubd_dev->queue, UBD_MAX_REQUEST);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, ubd_dev->queue);
}
blk_queue_flag_set(QUEUE_FLAG_NONROT, ubd_dev->queue);
return 0;

1
block/Makefile
View File

@ -16,6 +16,7 @@ obj-$(CONFIG_BLK_DEV_BSG_COMMON) += bsg.o
obj-$(CONFIG_BLK_DEV_BSGLIB) += bsg-lib.o
obj-$(CONFIG_BLK_CGROUP) += blk-cgroup.o
obj-$(CONFIG_BLK_CGROUP_RWSTAT) += blk-cgroup-rwstat.o
obj-$(CONFIG_BLK_CGROUP_FC_APPID) += blk-cgroup-fc-appid.o
obj-$(CONFIG_BLK_DEV_THROTTLING) += blk-throttle.o
obj-$(CONFIG_BLK_CGROUP_IOPRIO) += blk-ioprio.o
obj-$(CONFIG_BLK_CGROUP_IOLATENCY) += blk-iolatency.o

2
block/badblocks.c
View File

@ -65,7 +65,6 @@ int badblocks_check(struct badblocks *bb, sector_t s, int sectors,
s >>= bb->shift;
target += (1<<bb->shift) - 1;
target >>= bb->shift;
sectors = target - s;
}
/* 'target' is now the first block after the bad range */
@ -345,7 +344,6 @@ int badblocks_clear(struct badblocks *bb, sector_t s, int sectors)
s += (1<<bb->shift) - 1;
s >>= bb->shift;
target >>= bb->shift;
sectors = target - s;
}
write_seqlock_irq(&bb->lock);

111
block/bfq-cgroup.c
View File

@ -557,6 +557,7 @@ static void bfq_pd_init(struct blkg_policy_data *pd)
*/
bfqg->bfqd = bfqd;
bfqg->active_entities = 0;
bfqg->online = true;
bfqg->rq_pos_tree = RB_ROOT;
}
@ -585,28 +586,11 @@ static void bfq_group_set_parent(struct bfq_group *bfqg,
entity->sched_data = &parent->sched_data;
}
static struct bfq_group *bfq_lookup_bfqg(struct bfq_data *bfqd,
struct blkcg *blkcg)
static void bfq_link_bfqg(struct bfq_data *bfqd, struct bfq_group *bfqg)
{
struct blkcg_gq *blkg;
blkg = blkg_lookup(blkcg, bfqd->queue);
if (likely(blkg))
return blkg_to_bfqg(blkg);
return NULL;
}
struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd,
struct blkcg *blkcg)
{
struct bfq_group *bfqg, *parent;
struct bfq_group *parent;
struct bfq_entity *entity;
bfqg = bfq_lookup_bfqg(bfqd, blkcg);
if (unlikely(!bfqg))
return NULL;
/*
* Update chain of bfq_groups as we might be handling a leaf group
* which, along with some of its relatives, has not been hooked yet
@ -623,8 +607,24 @@ struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd,
bfq_group_set_parent(curr_bfqg, parent);
}
}
}
return bfqg;
struct bfq_group *bfq_bio_bfqg(struct bfq_data *bfqd, struct bio *bio)
{
struct blkcg_gq *blkg = bio->bi_blkg;
struct bfq_group *bfqg;
while (blkg) {
bfqg = blkg_to_bfqg(blkg);
if (bfqg->online) {
bio_associate_blkg_from_css(bio, &blkg->blkcg->css);
return bfqg;
}
blkg = blkg->parent;
}
bio_associate_blkg_from_css(bio,
&bfqg_to_blkg(bfqd->root_group)->blkcg->css);
return bfqd->root_group;
}
/**
@ -714,25 +714,15 @@ void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq,
* Move bic to blkcg, assuming that bfqd->lock is held; which makes
* sure that the reference to cgroup is valid across the call (see
* comments in bfq_bic_update_cgroup on this issue)
*
* NOTE: an alternative approach might have been to store the current
* cgroup in bfqq and getting a reference to it, reducing the lookup
* time here, at the price of slightly more complex code.
*/
static struct bfq_group *__bfq_bic_change_cgroup(struct bfq_data *bfqd,
struct bfq_io_cq *bic,
struct blkcg *blkcg)
static void *__bfq_bic_change_cgroup(struct bfq_data *bfqd,
struct bfq_io_cq *bic,
struct bfq_group *bfqg)
{
struct bfq_queue *async_bfqq = bic_to_bfqq(bic, 0);
struct bfq_queue *sync_bfqq = bic_to_bfqq(bic, 1);
struct bfq_group *bfqg;
struct bfq_entity *entity;
bfqg = bfq_find_set_group(bfqd, blkcg);
if (unlikely(!bfqg))
bfqg = bfqd->root_group;
if (async_bfqq) {
entity = &async_bfqq->entity;
@ -743,9 +733,39 @@ static struct bfq_group *__bfq_bic_change_cgroup(struct bfq_data *bfqd,
}
if (sync_bfqq) {
entity = &sync_bfqq->entity;
if (entity->sched_data != &bfqg->sched_data)
bfq_bfqq_move(bfqd, sync_bfqq, bfqg);
if (!sync_bfqq->new_bfqq && !bfq_bfqq_coop(sync_bfqq)) {
/* We are the only user of this bfqq, just move it */
if (sync_bfqq->entity.sched_data != &bfqg->sched_data)
bfq_bfqq_move(bfqd, sync_bfqq, bfqg);
} else {
struct bfq_queue *bfqq;
/*
* The queue was merged to a different queue. Check
* that the merge chain still belongs to the same
* cgroup.
*/
for (bfqq = sync_bfqq; bfqq; bfqq = bfqq->new_bfqq)
if (bfqq->entity.sched_data !=
&bfqg->sched_data)
break;
if (bfqq) {
/*
* Some queue changed cgroup so the merge is
* not valid anymore. We cannot easily just
* cancel the merge (by clearing new_bfqq) as
* there may be other processes using this
* queue and holding refs to all queues below
* sync_bfqq->new_bfqq. Similarly if the merge
* already happened, we need to detach from
* bfqq now so that we cannot merge bio to a
* request from the old cgroup.
*/
bfq_put_cooperator(sync_bfqq);
bfq_release_process_ref(bfqd, sync_bfqq);
bic_set_bfqq(bic, NULL, 1);
}
}
}
return bfqg;
@ -754,20 +774,24 @@ static struct bfq_group *__bfq_bic_change_cgroup(struct bfq_data *bfqd,
void bfq_bic_update_cgroup(struct bfq_io_cq *bic, struct bio *bio)
{
struct bfq_data *bfqd = bic_to_bfqd(bic);
struct bfq_group *bfqg = NULL;
struct bfq_group *bfqg = bfq_bio_bfqg(bfqd, bio);
uint64_t serial_nr;
rcu_read_lock();
serial_nr = __bio_blkcg(bio)->css.serial_nr;
serial_nr = bfqg_to_blkg(bfqg)->blkcg->css.serial_nr;
/*
* Check whether blkcg has changed. The condition may trigger
* spuriously on a newly created cic but there's no harm.
*/
if (unlikely(!bfqd) || likely(bic->blkcg_serial_nr == serial_nr))
goto out;
return;
bfqg = __bfq_bic_change_cgroup(bfqd, bic, __bio_blkcg(bio));
/*
* New cgroup for this process. Make sure it is linked to bfq internal
* cgroup hierarchy.
*/
bfq_link_bfqg(bfqd, bfqg);
__bfq_bic_change_cgroup(bfqd, bic, bfqg);
/*
* Update blkg_path for bfq_log_* functions. We cache this
* path, and update it here, for the following
@ -820,8 +844,6 @@ void bfq_bic_update_cgroup(struct bfq_io_cq *bic, struct bio *bio)
*/
blkg_path(bfqg_to_blkg(bfqg), bfqg->blkg_path, sizeof(bfqg->blkg_path));
bic->blkcg_serial_nr = serial_nr;
out:
rcu_read_unlock();
}
/**
@ -949,6 +971,7 @@ static void bfq_pd_offline(struct blkg_policy_data *pd)
put_async_queues:
bfq_put_async_queues(bfqd, bfqg);
bfqg->online = false;
spin_unlock_irqrestore(&bfqd->lock, flags);
/*
@ -1438,7 +1461,7 @@ void bfq_end_wr_async(struct bfq_data *bfqd)
bfq_end_wr_async_queues(bfqd, bfqd->root_group);
}
struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd, struct blkcg *blkcg)
struct bfq_group *bfq_bio_bfqg(struct bfq_data *bfqd, struct bio *bio)
{
return bfqd->root_group;
}

95
block/bfq-iosched.c
View File

@ -374,7 +374,7 @@ static const unsigned long bfq_activation_stable_merging = 600;
*/
static const unsigned long bfq_late_stable_merging = 600;
#define RQ_BIC(rq) icq_to_bic((rq)->elv.priv[0])
#define RQ_BIC(rq) ((struct bfq_io_cq *)((rq)->elv.priv[0]))
#define RQ_BFQQ(rq) ((rq)->elv.priv[1])
struct bfq_queue *bic_to_bfqq(struct bfq_io_cq *bic, bool is_sync)
@ -456,6 +456,8 @@ static struct bfq_io_cq *bfq_bic_lookup(struct request_queue *q)
*/
void bfq_schedule_dispatch(struct bfq_data *bfqd)
{
lockdep_assert_held(&bfqd->lock);
if (bfqd->queued != 0) {
bfq_log(bfqd, "schedule dispatch");
blk_mq_run_hw_queues(bfqd->queue, true);
@ -2133,9 +2135,7 @@ static void bfq_check_waker(struct bfq_data *bfqd, struct bfq_queue *bfqq,
if (!bfqd->last_completed_rq_bfqq ||
bfqd->last_completed_rq_bfqq == bfqq ||
bfq_bfqq_has_short_ttime(bfqq) ||
bfqq->dispatched > 0 ||
now_ns - bfqd->last_completion >= 4 * NSEC_PER_MSEC ||
bfqd->last_completed_rq_bfqq == bfqq->waker_bfqq)
now_ns - bfqd->last_completion >= 4 * NSEC_PER_MSEC)
return;
/*
@ -2208,9 +2208,13 @@ static void bfq_add_request(struct request *rq)
bfq_log_bfqq(bfqd, bfqq, "add_request %d", rq_is_sync(rq));
bfqq->queued[rq_is_sync(rq)]++;
bfqd->queued++;
/*
* Updating of 'bfqd->queued' is protected by 'bfqd->lock', however, it
* may be read without holding the lock in bfq_has_work().
*/
WRITE_ONCE(bfqd->queued, bfqd->queued + 1);
if (RB_EMPTY_ROOT(&bfqq->sort_list) && bfq_bfqq_sync(bfqq)) {
if (bfq_bfqq_sync(bfqq) && RQ_BIC(rq)->requests <= 1) {
bfq_check_waker(bfqd, bfqq, now_ns);
/*
@ -2400,7 +2404,11 @@ static void bfq_remove_request(struct request_queue *q,
if (rq->queuelist.prev != &rq->queuelist)
list_del_init(&rq->queuelist);
bfqq->queued[sync]--;
bfqd->queued--;
/*
* Updating of 'bfqd->queued' is protected by 'bfqd->lock', however, it
* may be read without holding the lock in bfq_has_work().
*/
WRITE_ONCE(bfqd->queued, bfqd->queued - 1);
elv_rb_del(&bfqq->sort_list, rq);
elv_rqhash_del(q, rq);
@ -2463,10 +2471,17 @@ static bool bfq_bio_merge(struct request_queue *q, struct bio *bio,
spin_lock_irq(&bfqd->lock);
if (bic)
if (bic) {
/*
* Make sure cgroup info is uptodate for current process before
* considering the merge.
*/
bfq_bic_update_cgroup(bic, bio);
bfqd->bio_bfqq = bic_to_bfqq(bic, op_is_sync(bio->bi_opf));
else
} else {
bfqd->bio_bfqq = NULL;
}
bfqd->bio_bic = bic;
ret = blk_mq_sched_try_merge(q, bio, nr_segs, &free);
@ -2496,8 +2511,6 @@ static int bfq_request_merge(struct request_queue *q, struct request **req,
return ELEVATOR_NO_MERGE;
}
static struct bfq_queue *bfq_init_rq(struct request *rq);
static void bfq_request_merged(struct request_queue *q, struct request *req,
enum elv_merge type)
{
@ -2506,7 +2519,7 @@ static void bfq_request_merged(struct request_queue *q, struct request *req,
blk_rq_pos(req) <
blk_rq_pos(container_of(rb_prev(&req->rb_node),
struct request, rb_node))) {
struct bfq_queue *bfqq = bfq_init_rq(req);
struct bfq_queue *bfqq = RQ_BFQQ(req);
struct bfq_data *bfqd;
struct request *prev, *next_rq;
@ -2558,8 +2571,8 @@ static void bfq_request_merged(struct request_queue *q, struct request *req,
static void bfq_requests_merged(struct request_queue *q, struct request *rq,
struct request *next)
{
struct bfq_queue *bfqq = bfq_init_rq(rq),
*next_bfqq = bfq_init_rq(next);
struct bfq_queue *bfqq = RQ_BFQQ(rq),
*next_bfqq = RQ_BFQQ(next);
if (!bfqq)
goto remove;
@ -2764,6 +2777,14 @@ bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq)
if (process_refs == 0 || new_process_refs == 0)
return NULL;
/*
* Make sure merged queues belong to the same parent. Parents could
* have changed since the time we decided the two queues are suitable
* for merging.
*/
if (new_bfqq->entity.parent != bfqq->entity.parent)
return NULL;
bfq_log_bfqq(bfqq->bfqd, bfqq, "scheduling merge with queue %d",
new_bfqq->pid);
@ -2901,9 +2922,12 @@ bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
struct bfq_queue *new_bfqq =
bfq_setup_merge(bfqq, stable_merge_bfqq);
bic->stably_merged = true;
if (new_bfqq && new_bfqq->bic)
new_bfqq->bic->stably_merged = true;
if (new_bfqq) {
bic->stably_merged = true;
if (new_bfqq->bic)
new_bfqq->bic->stably_merged =
true;
}
return new_bfqq;
} else
return NULL;
@ -5045,11 +5069,11 @@ static bool bfq_has_work(struct blk_mq_hw_ctx *hctx)
struct bfq_data *bfqd = hctx->queue->elevator->elevator_data;
/*
* Avoiding lock: a race on bfqd->busy_queues should cause at
* Avoiding lock: a race on bfqd->queued should cause at
* most a call to dispatch for nothing
*/
return !list_empty_careful(&bfqd->dispatch) ||
bfq_tot_busy_queues(bfqd) > 0;
READ_ONCE(bfqd->queued);
}
static struct request *__bfq_dispatch_request(struct blk_mq_hw_ctx *hctx)
@ -5310,7 +5334,7 @@ static void bfq_put_stable_ref(struct bfq_queue *bfqq)
bfq_put_queue(bfqq);
}
static void bfq_put_cooperator(struct bfq_queue *bfqq)
void bfq_put_cooperator(struct bfq_queue *bfqq)
{
struct bfq_queue *__bfqq, *next;
@ -5716,14 +5740,7 @@ static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd,
struct bfq_queue *bfqq;
struct bfq_group *bfqg;
rcu_read_lock();
bfqg = bfq_find_set_group(bfqd, __bio_blkcg(bio));
if (!bfqg) {
bfqq = &bfqd->oom_bfqq;
goto out;
}
bfqg = bfq_bio_bfqg(bfqd, bio);
if (!is_sync) {
async_bfqq = bfq_async_queue_prio(bfqd, bfqg, ioprio_class,
ioprio);
@ -5769,8 +5786,6 @@ out:
if (bfqq != &bfqd->oom_bfqq && is_sync && !respawn)
bfqq = bfq_do_or_sched_stable_merge(bfqd, bfqq, bic);
rcu_read_unlock();
return bfqq;
}
@ -6117,6 +6132,8 @@ static inline void bfq_update_insert_stats(struct request_queue *q,
unsigned int cmd_flags) {}
#endif /* CONFIG_BFQ_CGROUP_DEBUG */
static struct bfq_queue *bfq_init_rq(struct request *rq);
static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head)
{
@ -6132,18 +6149,15 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bfqg_stats_update_legacy_io(q, rq);
#endif
spin_lock_irq(&bfqd->lock);
bfqq = bfq_init_rq(rq);
if (blk_mq_sched_try_insert_merge(q, rq, &free)) {
spin_unlock_irq(&bfqd->lock);
blk_mq_free_requests(&free);
return;
}
spin_unlock_irq(&bfqd->lock);
trace_block_rq_insert(rq);
spin_lock_irq(&bfqd->lock);
bfqq = bfq_init_rq(rq);
if (!bfqq || at_head) {
if (at_head)
list_add(&rq->queuelist, &bfqd->dispatch);
@ -6360,12 +6374,6 @@ static void bfq_completed_request(struct bfq_queue *bfqq, struct bfq_data *bfqd)
bfq_schedule_dispatch(bfqd);
}
static void bfq_finish_requeue_request_body(struct bfq_queue *bfqq)
{
bfqq_request_freed(bfqq);
bfq_put_queue(bfqq);
}
/*
* The processes associated with bfqq may happen to generate their
* cumulative I/O at a lower rate than the rate at which the device
@ -6562,7 +6570,9 @@ static void bfq_finish_requeue_request(struct request *rq)
bfq_completed_request(bfqq, bfqd);
}
bfq_finish_requeue_request_body(bfqq);
bfqq_request_freed(bfqq);
bfq_put_queue(bfqq);
RQ_BIC(rq)->requests--;
spin_unlock_irqrestore(&bfqd->lock, flags);
/*
@ -6796,6 +6806,7 @@ static struct bfq_queue *bfq_init_rq(struct request *rq)
bfqq_request_allocated(bfqq);
bfqq->ref++;
bic->requests++;
bfq_log_bfqq(bfqd, bfqq, "get_request %p: bfqq %p, %d",
rq, bfqq, bfqq->ref);
@ -6892,8 +6903,8 @@ bfq_idle_slice_timer_body(struct bfq_data *bfqd, struct bfq_queue *bfqq)
bfq_bfqq_expire(bfqd, bfqq, true, reason);
schedule_dispatch:
spin_unlock_irqrestore(&bfqd->lock, flags);
bfq_schedule_dispatch(bfqd);
spin_unlock_irqrestore(&bfqd->lock, flags);
}
/*

11
block/bfq-iosched.h
View File

@ -468,6 +468,7 @@ struct bfq_io_cq {
struct bfq_queue *stable_merge_bfqq;
bool stably_merged; /* non splittable if true */
unsigned int requests; /* Number of requests this process has in flight */
};
/**
@ -928,6 +929,8 @@ struct bfq_group {
/* reference counter (see comments in bfq_bic_update_cgroup) */
int ref;
/* Is bfq_group still online? */
bool online;
struct bfq_entity entity;
struct bfq_sched_data sched_data;
@ -979,6 +982,7 @@ void bfq_weights_tree_remove(struct bfq_data *bfqd,
void bfq_bfqq_expire(struct bfq_data *bfqd, struct bfq_queue *bfqq,
bool compensate, enum bfqq_expiration reason);
void bfq_put_queue(struct bfq_queue *bfqq);
void bfq_put_cooperator(struct bfq_queue *bfqq);
void bfq_end_wr_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg);
void bfq_release_process_ref(struct bfq_data *bfqd, struct bfq_queue *bfqq);
void bfq_schedule_dispatch(struct bfq_data *bfqd);
@ -1006,8 +1010,7 @@ void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq,
void bfq_init_entity(struct bfq_entity *entity, struct bfq_group *bfqg);
void bfq_bic_update_cgroup(struct bfq_io_cq *bic, struct bio *bio);
void bfq_end_wr_async(struct bfq_data *bfqd);
struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd,
struct blkcg *blkcg);
struct bfq_group *bfq_bio_bfqg(struct bfq_data *bfqd, struct bio *bio);
struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg);
struct bfq_group *bfqq_group(struct bfq_queue *bfqq);
struct bfq_group *bfq_create_group_hierarchy(struct bfq_data *bfqd, int node);
@ -1100,13 +1103,13 @@ struct bfq_group *bfqq_group(struct bfq_queue *bfqq);
break; \
bfq_bfqq_name((bfqq), pid_str, MAX_BFQQ_NAME_LENGTH); \
blk_add_cgroup_trace_msg((bfqd)->queue, \
bfqg_to_blkg(bfqq_group(bfqq))->blkcg, \
&bfqg_to_blkg(bfqq_group(bfqq))->blkcg->css, \
"%s " fmt, pid_str, ##args); \
} while (0)
#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do { \
blk_add_cgroup_trace_msg((bfqd)->queue, \
bfqg_to_blkg(bfqg)->blkcg, fmt, ##args); \
&bfqg_to_blkg(bfqg)->blkcg->css, fmt, ##args); \
} while (0)
#else /* CONFIG_BFQ_GROUP_IOSCHED */

146
block/bio.c
View File

@ -224,24 +224,13 @@ EXPORT_SYMBOL(bio_uninit);
static void bio_free(struct bio *bio)
{
struct bio_set *bs = bio->bi_pool;
void *p;
void *p = bio;
WARN_ON_ONCE(!bs);
bio_uninit(bio);
if (bs) {
bvec_free(&bs->bvec_pool, bio->bi_io_vec, bio->bi_max_vecs);
/*
* If we have front padding, adjust the bio pointer before freeing
*/
p = bio;
p -= bs->front_pad;
mempool_free(p, &bs->bio_pool);
} else {
/* Bio was allocated by bio_kmalloc() */
kfree(bio);
}
bvec_free(&bs->bvec_pool, bio->bi_io_vec, bio->bi_max_vecs);
mempool_free(p - bs->front_pad, &bs->bio_pool);
}
/*
@ -419,6 +408,28 @@ static void punt_bios_to_rescuer(struct bio_set *bs)
queue_work(bs->rescue_workqueue, &bs->rescue_work);
}
static struct bio *bio_alloc_percpu_cache(struct block_device *bdev,
unsigned short nr_vecs, unsigned int opf, gfp_t gfp,
struct bio_set *bs)
{
struct bio_alloc_cache *cache;
struct bio *bio;
cache = per_cpu_ptr(bs->cache, get_cpu());
if (!cache->free_list) {
put_cpu();
return NULL;
}
bio = cache->free_list;
cache->free_list = bio->bi_next;
cache->nr--;
put_cpu();
bio_init(bio, bdev, nr_vecs ? bio->bi_inline_vecs : NULL, nr_vecs, opf);
bio->bi_pool = bs;
return bio;
}
/**
* bio_alloc_bioset - allocate a bio for I/O
* @bdev: block device to allocate the bio for (can be %NULL)
@ -451,6 +462,9 @@ static void punt_bios_to_rescuer(struct bio_set *bs)
* submit_bio_noacct() should be avoided - instead, use bio_set's front_pad
* for per bio allocations.
*
* If REQ_ALLOC_CACHE is set, the final put of the bio MUST be done from process
* context, not hard/soft IRQ.
*
* Returns: Pointer to new bio on success, NULL on failure.
*/
struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs,
@ -465,6 +479,21 @@ struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs,
if (WARN_ON_ONCE(!mempool_initialized(&bs->bvec_pool) && nr_vecs > 0))
return NULL;
if (opf & REQ_ALLOC_CACHE) {
if (bs->cache && nr_vecs <= BIO_INLINE_VECS) {
bio = bio_alloc_percpu_cache(bdev, nr_vecs, opf,
gfp_mask, bs);
if (bio)
return bio;
/*
* No cached bio available, bio returned below marked with
* REQ_ALLOC_CACHE to particpate in per-cpu alloc cache.
*/
} else {
opf &= ~REQ_ALLOC_CACHE;
}
}
/*
* submit_bio_noacct() converts recursion to iteration; this means if
* we're running beneath it, any bios we allocate and submit will not be
@ -528,28 +557,28 @@ err_free:
EXPORT_SYMBOL(bio_alloc_bioset);
/**
* bio_kmalloc - kmalloc a bio for I/O
* bio_kmalloc - kmalloc a bio
* @nr_vecs: number of bio_vecs to allocate
* @gfp_mask: the GFP_* mask given to the slab allocator
* @nr_iovecs: number of iovecs to pre-allocate
*
* Use kmalloc to allocate and initialize a bio.
* Use kmalloc to allocate a bio (including bvecs). The bio must be initialized
* using bio_init() before use. To free a bio returned from this function use
* kfree() after calling bio_uninit(). A bio returned from this function can
* be reused by calling bio_uninit() before calling bio_init() again.
*
* Note that unlike bio_alloc() or bio_alloc_bioset() allocations from this
* function are not backed by a mempool can can fail. Do not use this function
* for allocations in the file system I/O path.
*
* Returns: Pointer to new bio on success, NULL on failure.
*/
struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned short nr_iovecs)
struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask)
{
struct bio *bio;
if (nr_iovecs > UIO_MAXIOV)
if (nr_vecs > UIO_MAXIOV)
return NULL;
bio = kmalloc(struct_size(bio, bi_inline_vecs, nr_iovecs), gfp_mask);
if (unlikely(!bio))
return NULL;
bio_init(bio, NULL, nr_iovecs ? bio->bi_inline_vecs : NULL, nr_iovecs,
0);
bio->bi_pool = NULL;
return bio;
return kmalloc(struct_size(bio, bi_inline_vecs, nr_vecs), gfp_mask);
}
EXPORT_SYMBOL(bio_kmalloc);
@ -711,7 +740,7 @@ void bio_put(struct bio *bio)
return;
}
if (bio_flagged(bio, BIO_PERCPU_CACHE)) {
if (bio->bi_opf & REQ_ALLOC_CACHE) {
struct bio_alloc_cache *cache;
bio_uninit(bio);
@ -732,14 +761,15 @@ static int __bio_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp)
bio_set_flag(bio, BIO_CLONED);
if (bio_flagged(bio_src, BIO_THROTTLED))
bio_set_flag(bio, BIO_THROTTLED);
if (bio->bi_bdev == bio_src->bi_bdev &&
bio_flagged(bio_src, BIO_REMAPPED))
bio_set_flag(bio, BIO_REMAPPED);
bio->bi_ioprio = bio_src->bi_ioprio;
bio->bi_iter = bio_src->bi_iter;
bio_clone_blkg_association(bio, bio_src);
blkcg_bio_issue_init(bio);
if (bio->bi_bdev) {
if (bio->bi_bdev == bio_src->bi_bdev &&
bio_flagged(bio_src, BIO_REMAPPED))
bio_set_flag(bio, BIO_REMAPPED);
bio_clone_blkg_association(bio, bio_src);
}
if (bio_crypt_clone(bio, bio_src, gfp) < 0)
return -ENOMEM;
@ -1727,55 +1757,13 @@ int bioset_init_from_src(struct bio_set *bs, struct bio_set *src)
flags |= BIOSET_NEED_BVECS;
if (src->rescue_workqueue)
flags |= BIOSET_NEED_RESCUER;
if (src->cache)
flags |= BIOSET_PERCPU_CACHE;
return bioset_init(bs, src->bio_pool.min_nr, src->front_pad, flags);
}
EXPORT_SYMBOL(bioset_init_from_src);
/**
* bio_alloc_kiocb - Allocate a bio from bio_set based on kiocb
* @kiocb: kiocb describing the IO
* @bdev: block device to allocate the bio for (can be %NULL)
* @nr_vecs: number of iovecs to pre-allocate
* @opf: operation and flags for bio
* @bs: bio_set to allocate from
*
* Description:
* Like @bio_alloc_bioset, but pass in the kiocb. The kiocb is only
* used to check if we should dip into the per-cpu bio_set allocation
* cache. The allocation uses GFP_KERNEL internally. On return, the
* bio is marked BIO_PERCPU_CACHEABLE, and the final put of the bio
* MUST be done from process context, not hard/soft IRQ.
*
*/
struct bio *bio_alloc_kiocb(struct kiocb *kiocb, struct block_device *bdev,
unsigned short nr_vecs, unsigned int opf, struct bio_set *bs)
{
struct bio_alloc_cache *cache;
struct bio *bio;
if (!(kiocb->ki_flags & IOCB_ALLOC_CACHE) || nr_vecs > BIO_INLINE_VECS)
return bio_alloc_bioset(bdev, nr_vecs, opf, GFP_KERNEL, bs);
cache = per_cpu_ptr(bs->cache, get_cpu());
if (cache->free_list) {
bio = cache->free_list;
cache->free_list = bio->bi_next;
cache->nr--;
put_cpu();
bio_init(bio, bdev, nr_vecs ? bio->bi_inline_vecs : NULL,
nr_vecs, opf);
bio->bi_pool = bs;
bio_set_flag(bio, BIO_PERCPU_CACHE);
return bio;
}
put_cpu();
bio = bio_alloc_bioset(bdev, nr_vecs, opf, GFP_KERNEL, bs);
bio_set_flag(bio, BIO_PERCPU_CACHE);
return bio;
}
EXPORT_SYMBOL_GPL(bio_alloc_kiocb);
static int __init init_bio(void)
{
int i;

57
block/blk-cgroup-fc-appid.c Normal file
View File

@ -0,0 +1,57 @@
// SPDX-License-Identifier: GPL-2.0
#include "blk-cgroup.h"
/**
* blkcg_set_fc_appid - set the fc_app_id field associted to blkcg
* @app_id: application identifier
* @cgrp_id: cgroup id
* @app_id_len: size of application identifier
*/
int blkcg_set_fc_appid(char *app_id, u64 cgrp_id, size_t app_id_len)
{
struct cgroup *cgrp;
struct cgroup_subsys_state *css;
struct blkcg *blkcg;
int ret = 0;
if (app_id_len > FC_APPID_LEN)
return -EINVAL;
cgrp = cgroup_get_from_id(cgrp_id);
if (!cgrp)
return -ENOENT;
css = cgroup_get_e_css(cgrp, &io_cgrp_subsys);
if (!css) {
ret = -ENOENT;
goto out_cgrp_put;
}
blkcg = css_to_blkcg(css);
/*
* There is a slight race condition on setting the appid.
* Worst case an I/O may not find the right id.
* This is no different from the I/O we let pass while obtaining
* the vmid from the fabric.
* Adding the overhead of a lock is not necessary.
*/
strlcpy(blkcg->fc_app_id, app_id, app_id_len);
css_put(css);
out_cgrp_put:
cgroup_put(cgrp);
return ret;
}
EXPORT_SYMBOL_GPL(blkcg_set_fc_appid);
/**
* blkcg_get_fc_appid - get the fc app identifier associated with a bio
* @bio: target bio
*
* On success return the fc_app_id, on failure return NULL
*/
char *blkcg_get_fc_appid(struct bio *bio)
{
if (!bio->bi_blkg || bio->bi_blkg->blkcg->fc_app_id[0] == '\0')
return NULL;
return bio->bi_blkg->blkcg->fc_app_id;
}
EXPORT_SYMBOL_GPL(blkcg_get_fc_appid);

168
block/blk-cgroup.c
View File

@ -59,6 +59,23 @@ static struct workqueue_struct *blkcg_punt_bio_wq;
#define BLKG_DESTROY_BATCH_SIZE 64
/**
* blkcg_css - find the current css
*
* Find the css associated with either the kthread or the current task.
* This may return a dying css, so it is up to the caller to use tryget logic
* to confirm it is alive and well.
*/
static struct cgroup_subsys_state *blkcg_css(void)
{
struct cgroup_subsys_state *css;
css = kthread_blkcg();
if (css)
return css;
return task_css(current, io_cgrp_id);
}
static bool blkcg_policy_enabled(struct request_queue *q,
const struct blkcg_policy *pol)
{
@ -155,6 +172,33 @@ static void blkg_async_bio_workfn(struct work_struct *work)
blk_finish_plug(&plug);
}
/**
* bio_blkcg_css - return the blkcg CSS associated with a bio
* @bio: target bio
*
* This returns the CSS for the blkcg associated with a bio, or %NULL if not
* associated. Callers are expected to either handle %NULL or know association
* has been done prior to calling this.
*/
struct cgroup_subsys_state *bio_blkcg_css(struct bio *bio)
{
if (!bio || !bio->bi_blkg)
return NULL;
return &bio->bi_blkg->blkcg->css;
}
EXPORT_SYMBOL_GPL(bio_blkcg_css);
/**
* blkcg_parent - get the parent of a blkcg
* @blkcg: blkcg of interest
*
* Return the parent blkcg of @blkcg. Can be called anytime.
*/
static inline struct blkcg *blkcg_parent(struct blkcg *blkcg)
{
return css_to_blkcg(blkcg->css.parent);
}
/**
* blkg_alloc - allocate a blkg
* @blkcg: block cgroup the new blkg is associated with
@ -254,7 +298,6 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg,
struct blkcg_gq *blkg;
int i, ret;
WARN_ON_ONCE(!rcu_read_lock_held());
lockdep_assert_held(&q->queue_lock);
/* request_queue is dying, do not create/recreate a blkg */
@ -905,7 +948,6 @@ static void blkcg_print_one_stat(struct blkcg_gq *blkg, struct seq_file *s)
{
struct blkg_iostat_set *bis = &blkg->iostat;
u64 rbytes, wbytes, rios, wios, dbytes, dios;
bool has_stats = false;
const char *dname;
unsigned seq;
int i;
@ -931,14 +973,12 @@ static void blkcg_print_one_stat(struct blkcg_gq *blkg, struct seq_file *s)
} while (u64_stats_fetch_retry(&bis->sync, seq));
if (rbytes || wbytes || rios || wios) {
has_stats = true;
seq_printf(s, "rbytes=%llu wbytes=%llu rios=%llu wios=%llu dbytes=%llu dios=%llu",
rbytes, wbytes, rios, wios,
dbytes, dios);
}
if (blkcg_debug_stats && atomic_read(&blkg->use_delay)) {
has_stats = true;
seq_printf(s, " use_delay=%d delay_nsec=%llu",
atomic_read(&blkg->use_delay),
atomic64_read(&blkg->delay_nsec));
@ -950,12 +990,10 @@ static void blkcg_print_one_stat(struct blkcg_gq *blkg, struct seq_file *s)
if (!blkg->pd[i] || !pol->pd_stat_fn)
continue;
if (pol->pd_stat_fn(blkg->pd[i], s))
has_stats = true;
pol->pd_stat_fn(blkg->pd[i], s);
}
if (has_stats)
seq_printf(s, "\n");
seq_puts(s, "\n");
}
static int blkcg_print_stat(struct seq_file *sf, void *v)
@ -994,6 +1032,13 @@ static struct cftype blkcg_legacy_files[] = {
{ } /* terminate */
};
#ifdef CONFIG_CGROUP_WRITEBACK
struct list_head *blkcg_get_cgwb_list(struct cgroup_subsys_state *css)
{
return &css_to_blkcg(css)->cgwb_list;
}
#endif
/*
* blkcg destruction is a three-stage process.
*
@ -1015,25 +1060,6 @@ static struct cftype blkcg_legacy_files[] = {
* This finally frees the blkcg.
*/
/**
* blkcg_css_offline - cgroup css_offline callback
* @css: css of interest
*
* This function is called when @css is about to go away. Here the cgwbs are
* offlined first and only once writeback associated with the blkcg has
* finished do we start step 2 (see above).
*/
static void blkcg_css_offline(struct cgroup_subsys_state *css)
{
struct blkcg *blkcg = css_to_blkcg(css);
/* this prevents anyone from attaching or migrating to this blkcg */
wb_blkcg_offline(blkcg);
/* put the base online pin allowing step 2 to be triggered */
blkcg_unpin_online(blkcg);
}
/**
* blkcg_destroy_blkgs - responsible for shooting down blkgs
* @blkcg: blkcg of interest
@ -1045,7 +1071,7 @@ static void blkcg_css_offline(struct cgroup_subsys_state *css)
*
* This is the blkcg counterpart of ioc_release_fn().
*/
void blkcg_destroy_blkgs(struct blkcg *blkcg)
static void blkcg_destroy_blkgs(struct blkcg *blkcg)
{
might_sleep();
@ -1075,6 +1101,57 @@ void blkcg_destroy_blkgs(struct blkcg *blkcg)
spin_unlock_irq(&blkcg->lock);
}
/**
* blkcg_pin_online - pin online state
* @blkcg_css: blkcg of interest
*
* While pinned, a blkcg is kept online. This is primarily used to
* impedance-match blkg and cgwb lifetimes so that blkg doesn't go offline
* while an associated cgwb is still active.
*/
void blkcg_pin_online(struct cgroup_subsys_state *blkcg_css)
{
refcount_inc(&css_to_blkcg(blkcg_css)->online_pin);
}
/**
* blkcg_unpin_online - unpin online state
* @blkcg_css: blkcg of interest
*
* This is primarily used to impedance-match blkg and cgwb lifetimes so
* that blkg doesn't go offline while an associated cgwb is still active.
* When this count goes to zero, all active cgwbs have finished so the
* blkcg can continue destruction by calling blkcg_destroy_blkgs().
*/
void blkcg_unpin_online(struct cgroup_subsys_state *blkcg_css)
{
struct blkcg *blkcg = css_to_blkcg(blkcg_css);
do {
if (!refcount_dec_and_test(&blkcg->online_pin))
break;
blkcg_destroy_blkgs(blkcg);
blkcg = blkcg_parent(blkcg);
} while (blkcg);
}
/**
* blkcg_css_offline - cgroup css_offline callback
* @css: css of interest
*
* This function is called when @css is about to go away. Here the cgwbs are
* offlined first and only once writeback associated with the blkcg has
* finished do we start step 2 (see above).
*/
static void blkcg_css_offline(struct cgroup_subsys_state *css)
{
/* this prevents anyone from attaching or migrating to this blkcg */
wb_blkcg_offline(css);
/* put the base online pin allowing step 2 to be triggered */
blkcg_unpin_online(css);
}
static void blkcg_css_free(struct cgroup_subsys_state *css)
{
struct blkcg *blkcg = css_to_blkcg(css);
@ -1163,8 +1240,7 @@ unlock:
static int blkcg_css_online(struct cgroup_subsys_state *css)
{
struct blkcg *blkcg = css_to_blkcg(css);
struct blkcg *parent = blkcg_parent(blkcg);
struct blkcg *parent = blkcg_parent(css_to_blkcg(css));
/*
* blkcg_pin_online() is used to delay blkcg offline so that blkgs
@ -1172,7 +1248,7 @@ static int blkcg_css_online(struct cgroup_subsys_state *css)
* parent so that offline always happens towards the root.
*/
if (parent)
blkcg_pin_online(parent);
blkcg_pin_online(css);
return 0;
}
@ -1201,14 +1277,13 @@ int blkcg_init_queue(struct request_queue *q)
preloaded = !radix_tree_preload(GFP_KERNEL);
/* Make sure the root blkg exists. */
rcu_read_lock();
/* spin_lock_irq can serve as RCU read-side critical section. */
spin_lock_irq(&q->queue_lock);
blkg = blkg_create(&blkcg_root, q, new_blkg);
if (IS_ERR(blkg))
goto err_unlock;
q->root_blkg = blkg;
spin_unlock_irq(&q->queue_lock);
rcu_read_unlock();
if (preloaded)
radix_tree_preload_end();
@ -1234,7 +1309,6 @@ err_destroy_all:
return ret;
err_unlock:
spin_unlock_irq(&q->queue_lock);
rcu_read_unlock();
if (preloaded)
radix_tree_preload_end();
return PTR_ERR(blkg);
@ -1726,7 +1800,6 @@ static void blkcg_maybe_throttle_blkg(struct blkcg_gq *blkg, bool use_memdelay)
void blkcg_maybe_throttle_current(void)
{
struct request_queue *q = current->throttle_queue;
struct cgroup_subsys_state *css;
struct blkcg *blkcg;
struct blkcg_gq *blkg;
bool use_memdelay = current->use_memdelay;
@ -1738,12 +1811,7 @@ void blkcg_maybe_throttle_current(void)
current->use_memdelay = false;
rcu_read_lock();
css = kthread_blkcg();
if (css)
blkcg = css_to_blkcg(css);
else
blkcg = css_to_blkcg(task_css(current, io_cgrp_id));
blkcg = css_to_blkcg(blkcg_css());
if (!blkcg)
goto out;
blkg = blkg_lookup(blkcg, q);
@ -1889,7 +1957,7 @@ void bio_associate_blkg(struct bio *bio)
rcu_read_lock();
if (bio->bi_blkg)
css = &bio_blkcg(bio)->css;
css = bio_blkcg_css(bio);
else
css = blkcg_css();
@ -1950,6 +2018,22 @@ void blk_cgroup_bio_start(struct bio *bio)
put_cpu();
}
bool blk_cgroup_congested(void)
{
struct cgroup_subsys_state *css;
bool ret = false;
rcu_read_lock();
for (css = blkcg_css(); css; css = css->parent) {
if (atomic_read(&css->cgroup->congestion_count)) {
ret = true;
break;
}
}
rcu_read_unlock();
return ret;
}
static int __init blkcg_init(void)
{
blkcg_punt_bio_wq = alloc_workqueue("blkcg_punt_bio",

140
block/blk-cgroup.h
View File

@ -15,13 +15,101 @@
*/
#include <linux/blk-cgroup.h>
#include <linux/cgroup.h>
#include <linux/kthread.h>
#include <linux/blk-mq.h>
struct blkcg_gq;
struct blkg_policy_data;
/* percpu_counter batch for blkg_[rw]stats, per-cpu drift doesn't matter */
#define BLKG_STAT_CPU_BATCH (INT_MAX / 2)
#ifdef CONFIG_BLK_CGROUP
enum blkg_iostat_type {
BLKG_IOSTAT_READ,
BLKG_IOSTAT_WRITE,
BLKG_IOSTAT_DISCARD,
BLKG_IOSTAT_NR,
};
struct blkg_iostat {
u64 bytes[BLKG_IOSTAT_NR];
u64 ios[BLKG_IOSTAT_NR];
};
struct blkg_iostat_set {
struct u64_stats_sync sync;
struct blkg_iostat cur;
struct blkg_iostat last;
};
/* association between a blk cgroup and a request queue */
struct blkcg_gq {
/* Pointer to the associated request_queue */
struct request_queue *q;
struct list_head q_node;
struct hlist_node blkcg_node;
struct blkcg *blkcg;
/* all non-root blkcg_gq's are guaranteed to have access to parent */
struct blkcg_gq *parent;
/* reference count */
struct percpu_ref refcnt;
/* is this blkg online? protected by both blkcg and q locks */
bool online;
struct blkg_iostat_set __percpu *iostat_cpu;
struct blkg_iostat_set iostat;
struct blkg_policy_data *pd[BLKCG_MAX_POLS];
spinlock_t async_bio_lock;
struct bio_list async_bios;
union {
struct work_struct async_bio_work;
struct work_struct free_work;
};
atomic_t use_delay;
atomic64_t delay_nsec;
atomic64_t delay_start;
u64 last_delay;
int last_use;
struct rcu_head rcu_head;
};
struct blkcg {
struct cgroup_subsys_state css;
spinlock_t lock;
refcount_t online_pin;
struct radix_tree_root blkg_tree;
struct blkcg_gq __rcu *blkg_hint;
struct hlist_head blkg_list;
struct blkcg_policy_data *cpd[BLKCG_MAX_POLS];
struct list_head all_blkcgs_node;
#ifdef CONFIG_BLK_CGROUP_FC_APPID
char fc_app_id[FC_APPID_LEN];
#endif
#ifdef CONFIG_CGROUP_WRITEBACK
struct list_head cgwb_list;
#endif
};
static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css)
{
return css ? container_of(css, struct blkcg, css) : NULL;
}
/*
* A blkcg_gq (blkg) is association between a block cgroup (blkcg) and a
* request_queue (q). This is used by blkcg policies which need to track
@ -63,7 +151,7 @@ typedef void (blkcg_pol_online_pd_fn)(struct blkg_policy_data *pd);
typedef void (blkcg_pol_offline_pd_fn)(struct blkg_policy_data *pd);
typedef void (blkcg_pol_free_pd_fn)(struct blkg_policy_data *pd);
typedef void (blkcg_pol_reset_pd_stats_fn)(struct blkg_policy_data *pd);
typedef bool (blkcg_pol_stat_pd_fn)(struct blkg_policy_data *pd,
typedef void (blkcg_pol_stat_pd_fn)(struct blkg_policy_data *pd,
struct seq_file *s);
struct blkcg_policy {
@ -122,53 +210,15 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
char *input, struct blkg_conf_ctx *ctx);
void blkg_conf_finish(struct blkg_conf_ctx *ctx);
/**
* blkcg_css - find the current css
*
* Find the css associated with either the kthread or the current task.
* This may return a dying css, so it is up to the caller to use tryget logic
* to confirm it is alive and well.
*/
static inline struct cgroup_subsys_state *blkcg_css(void)
{
struct cgroup_subsys_state *css;
css = kthread_blkcg();
if (css)
return css;
return task_css(current, io_cgrp_id);
}
/**
* __bio_blkcg - internal, inconsistent version to get blkcg
*
* DO NOT USE.
* This function is inconsistent and consequently is dangerous to use. The
* first part of the function returns a blkcg where a reference is owned by the
* bio. This means it does not need to be rcu protected as it cannot go away
* with the bio owning a reference to it. However, the latter potentially gets
* it from task_css(). This can race against task migration and the cgroup
* dying. It is also semantically different as it must be called rcu protected
* and is susceptible to failure when trying to get a reference to it.
* Therefore, it is not ok to assume that *_get() will always succeed on the
* blkcg returned here.
*/
static inline struct blkcg *__bio_blkcg(struct bio *bio)
{
if (bio && bio->bi_blkg)
return bio->bi_blkg->blkcg;
return css_to_blkcg(blkcg_css());
}
/**
* bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg
* @return: true if this bio needs to be submitted with the root blkg context.
*
* In order to avoid priority inversions we sometimes need to issue a bio as if
* it were attached to the root blkg, and then backcharge to the actual owning
* blkg. The idea is we do bio_blkcg() to look up the actual context for the
* bio and attach the appropriate blkg to the bio. Then we call this helper and
* if it is true run with the root blkg for that queue and then do any
* blkg. The idea is we do bio_blkcg_css() to look up the actual context for
* the bio and attach the appropriate blkg to the bio. Then we call this helper
* and if it is true run with the root blkg for that queue and then do any
* backcharging to the originating cgroup once the io is complete.
*/
static inline bool bio_issue_as_root_blkg(struct bio *bio)
@ -457,7 +507,8 @@ struct blkcg_policy_data {
struct blkcg_policy {
};
#ifdef CONFIG_BLOCK
struct blkcg {
};
static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg, void *key) { return NULL; }
static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)
@ -471,8 +522,6 @@ static inline int blkcg_activate_policy(struct request_queue *q,
static inline void blkcg_deactivate_policy(struct request_queue *q,
const struct blkcg_policy *pol) { }
static inline struct blkcg *__bio_blkcg(struct bio *bio) { return NULL; }
static inline struct blkg_policy_data *blkg_to_pd(struct blkcg_gq *blkg,
struct blkcg_policy *pol) { return NULL; }
static inline struct blkcg_gq *pd_to_blkg(struct blkg_policy_data *pd) { return NULL; }
@ -488,7 +537,6 @@ static inline bool blk_cgroup_mergeable(struct request *rq, struct bio *bio) { r
#define blk_queue_for_each_rl(rl, q) \
for ((rl) = &(q)->root_rl; (rl); (rl) = NULL)
#endif /* CONFIG_BLOCK */
#endif /* CONFIG_BLK_CGROUP */
#endif /* _BLK_CGROUP_PRIVATE_H */

81
block/blk-core.c
View File

@ -588,10 +588,9 @@ static inline int bio_check_eod(struct bio *bio)
(nr_sectors > maxsector ||
bio->bi_iter.bi_sector > maxsector - nr_sectors)) {
pr_info_ratelimited("%s: attempt to access beyond end of device\n"
"%pg: rw=%d, want=%llu, limit=%llu\n",
current->comm,
bio->bi_bdev, bio->bi_opf,
bio_end_sector(bio), maxsector);
"%pg: rw=%d, sector=%llu, nr_sectors = %u limit=%llu\n",
current->comm, bio->bi_bdev, bio->bi_opf,
bio->bi_iter.bi_sector, nr_sectors, maxsector);
return -EIO;
}
return 0;
@ -816,11 +815,11 @@ void submit_bio_noacct(struct bio *bio)
switch (bio_op(bio)) {
case REQ_OP_DISCARD:
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(bdev))
goto not_supported;
break;
case REQ_OP_SECURE_ERASE:
if (!blk_queue_secure_erase(q))
if (!bdev_max_secure_erase_sectors(bdev))
goto not_supported;
break;
case REQ_OP_ZONE_APPEND:
@ -889,19 +888,11 @@ void submit_bio(struct bio *bio)
if (blkcg_punt_bio_submit(bio))
return;
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
*/
if (bio_has_data(bio)) {
unsigned int count = bio_sectors(bio);
if (op_is_write(bio_op(bio))) {
count_vm_events(PGPGOUT, count);
} else {
task_io_account_read(bio->bi_iter.bi_size);
count_vm_events(PGPGIN, count);
}
if (bio_op(bio) == REQ_OP_READ) {
task_io_account_read(bio->bi_iter.bi_size);
count_vm_events(PGPGIN, bio_sectors(bio));
} else if (bio_op(bio) == REQ_OP_WRITE) {
count_vm_events(PGPGOUT, bio_sectors(bio));
}
/*
@ -1018,21 +1009,22 @@ again:
}
}
static unsigned long __part_start_io_acct(struct block_device *part,
unsigned int sectors, unsigned int op,
unsigned long start_time)
unsigned long bdev_start_io_acct(struct block_device *bdev,
unsigned int sectors, unsigned int op,
unsigned long start_time)
{
const int sgrp = op_stat_group(op);
part_stat_lock();
update_io_ticks(part, start_time, false);
part_stat_inc(part, ios[sgrp]);
part_stat_add(part, sectors[sgrp], sectors);
part_stat_local_inc(part, in_flight[op_is_write(op)]);
update_io_ticks(bdev, start_time, false);
part_stat_inc(bdev, ios[sgrp]);
part_stat_add(bdev, sectors[sgrp], sectors);
part_stat_local_inc(bdev, in_flight[op_is_write(op)]);
part_stat_unlock();
return start_time;
}
EXPORT_SYMBOL(bdev_start_io_acct);
/**
* bio_start_io_acct_time - start I/O accounting for bio based drivers
@ -1041,8 +1033,8 @@ static unsigned long __part_start_io_acct(struct block_device *part,
*/
void bio_start_io_acct_time(struct bio *bio, unsigned long start_time)
{
__part_start_io_acct(bio->bi_bdev, bio_sectors(bio),
bio_op(bio), start_time);
bdev_start_io_acct(bio->bi_bdev, bio_sectors(bio),
bio_op(bio), start_time);
}
EXPORT_SYMBOL_GPL(bio_start_io_acct_time);
@ -1054,46 +1046,33 @@ EXPORT_SYMBOL_GPL(bio_start_io_acct_time);
*/
unsigned long bio_start_io_acct(struct bio *bio)
{
return __part_start_io_acct(bio->bi_bdev, bio_sectors(bio),
bio_op(bio), jiffies);
return bdev_start_io_acct(bio->bi_bdev, bio_sectors(bio),
bio_op(bio), jiffies);
}
EXPORT_SYMBOL_GPL(bio_start_io_acct);
unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors,
unsigned int op)
{
return __part_start_io_acct(disk->part0, sectors, op, jiffies);
}
EXPORT_SYMBOL(disk_start_io_acct);
static void __part_end_io_acct(struct block_device *part, unsigned int op,
unsigned long start_time)
void bdev_end_io_acct(struct block_device *bdev, unsigned int op,
unsigned long start_time)
{
const int sgrp = op_stat_group(op);
unsigned long now = READ_ONCE(jiffies);
unsigned long duration = now - start_time;
part_stat_lock();
update_io_ticks(part, now, true);
part_stat_add(part, nsecs[sgrp], jiffies_to_nsecs(duration));
part_stat_local_dec(part, in_flight[op_is_write(op)]);
update_io_ticks(bdev, now, true);
part_stat_add(bdev, nsecs[sgrp], jiffies_to_nsecs(duration));
part_stat_local_dec(bdev, in_flight[op_is_write(op)]);
part_stat_unlock();
}
EXPORT_SYMBOL(bdev_end_io_acct);
void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time,
struct block_device *orig_bdev)
struct block_device *orig_bdev)
{
__part_end_io_acct(orig_bdev, bio_op(bio), start_time);
bdev_end_io_acct(orig_bdev, bio_op(bio), start_time);
}
EXPORT_SYMBOL_GPL(bio_end_io_acct_remapped);
void disk_end_io_acct(struct gendisk *disk, unsigned int op,
unsigned long start_time)
{
__part_end_io_acct(disk->part0, op, start_time);
}
EXPORT_SYMBOL(disk_end_io_acct);
/**
* blk_lld_busy - Check if underlying low-level drivers of a device are busy
* @q : the queue of the device being checked

15
block/blk-crypto-fallback.c
View File

@ -152,23 +152,25 @@ static void blk_crypto_fallback_encrypt_endio(struct bio *enc_bio)
src_bio->bi_status = enc_bio->bi_status;
bio_put(enc_bio);
bio_uninit(enc_bio);
kfree(enc_bio);
bio_endio(src_bio);
}
static struct bio *blk_crypto_fallback_clone_bio(struct bio *bio_src)
{
unsigned int nr_segs = bio_segments(bio_src);
struct bvec_iter iter;
struct bio_vec bv;
struct bio *bio;
bio = bio_kmalloc(GFP_NOIO, bio_segments(bio_src));
bio = bio_kmalloc(nr_segs, GFP_NOIO);
if (!bio)
return NULL;
bio->bi_bdev = bio_src->bi_bdev;
bio_init(bio, bio_src->bi_bdev, bio->bi_inline_vecs, nr_segs,
bio_src->bi_opf);
if (bio_flagged(bio_src, BIO_REMAPPED))
bio_set_flag(bio, BIO_REMAPPED);
bio->bi_opf = bio_src->bi_opf;
bio->bi_ioprio = bio_src->bi_ioprio;
bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector;
bio->bi_iter.bi_size = bio_src->bi_iter.bi_size;
@ -177,7 +179,6 @@ static struct bio *blk_crypto_fallback_clone_bio(struct bio *bio_src)
bio->bi_io_vec[bio->bi_vcnt++] = bv;
bio_clone_blkg_association(bio, bio_src);
blkcg_bio_issue_init(bio);
return bio;
}
@ -363,8 +364,8 @@ out_release_keyslot:
blk_crypto_put_keyslot(slot);
out_put_enc_bio:
if (enc_bio)
bio_put(enc_bio);
bio_uninit(enc_bio);
kfree(enc_bio);
return ret;
}

76
block/blk-iocost.c
View File

@ -533,8 +533,7 @@ struct ioc_gq {
/* statistics */
struct iocg_pcpu_stat __percpu *pcpu_stat;
struct iocg_stat local_stat;
struct iocg_stat desc_stat;
struct iocg_stat stat;
struct iocg_stat last_stat;
u64 last_stat_abs_vusage;
u64 usage_delta_us;
@ -1371,7 +1370,7 @@ static bool iocg_kick_delay(struct ioc_gq *iocg, struct ioc_now *now)
return true;
} else {
if (iocg->indelay_since) {
iocg->local_stat.indelay_us += now->now - iocg->indelay_since;
iocg->stat.indelay_us += now->now - iocg->indelay_since;
iocg->indelay_since = 0;
}
iocg->delay = 0;
@ -1419,7 +1418,7 @@ static void iocg_pay_debt(struct ioc_gq *iocg, u64 abs_vpay,
/* if debt is paid in full, restore inuse */
if (!iocg->abs_vdebt) {
iocg->local_stat.indebt_us += now->now - iocg->indebt_since;
iocg->stat.indebt_us += now->now - iocg->indebt_since;
iocg->indebt_since = 0;
propagate_weights(iocg, iocg->active, iocg->last_inuse,
@ -1513,7 +1512,7 @@ static void iocg_kick_waitq(struct ioc_gq *iocg, bool pay_debt,
if (!waitqueue_active(&iocg->waitq)) {
if (iocg->wait_since) {
iocg->local_stat.wait_us += now->now - iocg->wait_since;
iocg->stat.wait_us += now->now - iocg->wait_since;
iocg->wait_since = 0;
}
return;
@ -1641,11 +1640,30 @@ static void iocg_build_inner_walk(struct ioc_gq *iocg,
}
}
/* propagate the deltas to the parent */
static void iocg_flush_stat_upward(struct ioc_gq *iocg)
{
if (iocg->level > 0) {
struct iocg_stat *parent_stat =
&iocg->ancestors[iocg->level - 1]->stat;
parent_stat->usage_us +=
iocg->stat.usage_us - iocg->last_stat.usage_us;
parent_stat->wait_us +=
iocg->stat.wait_us - iocg->last_stat.wait_us;
parent_stat->indebt_us +=
iocg->stat.indebt_us - iocg->last_stat.indebt_us;
parent_stat->indelay_us +=
iocg->stat.indelay_us - iocg->last_stat.indelay_us;
}
iocg->last_stat = iocg->stat;
}
/* collect per-cpu counters and propagate the deltas to the parent */
static void iocg_flush_stat_one(struct ioc_gq *iocg, struct ioc_now *now)
static void iocg_flush_stat_leaf(struct ioc_gq *iocg, struct ioc_now *now)
{
struct ioc *ioc = iocg->ioc;
struct iocg_stat new_stat;
u64 abs_vusage = 0;
u64 vusage_delta;
int cpu;
@ -1661,34 +1679,9 @@ static void iocg_flush_stat_one(struct ioc_gq *iocg, struct ioc_now *now)
iocg->last_stat_abs_vusage = abs_vusage;
iocg->usage_delta_us = div64_u64(vusage_delta, ioc->vtime_base_rate);
iocg->local_stat.usage_us += iocg->usage_delta_us;
iocg->stat.usage_us += iocg->usage_delta_us;
/* propagate upwards */
new_stat.usage_us =
iocg->local_stat.usage_us + iocg->desc_stat.usage_us;
new_stat.wait_us =
iocg->local_stat.wait_us + iocg->desc_stat.wait_us;
new_stat.indebt_us =
iocg->local_stat.indebt_us + iocg->desc_stat.indebt_us;
new_stat.indelay_us =
iocg->local_stat.indelay_us + iocg->desc_stat.indelay_us;
/* propagate the deltas to the parent */
if (iocg->level > 0) {
struct iocg_stat *parent_stat =
&iocg->ancestors[iocg->level - 1]->desc_stat;
parent_stat->usage_us +=
new_stat.usage_us - iocg->last_stat.usage_us;
parent_stat->wait_us +=
new_stat.wait_us - iocg->last_stat.wait_us;
parent_stat->indebt_us +=
new_stat.indebt_us - iocg->last_stat.indebt_us;
parent_stat->indelay_us +=
new_stat.indelay_us - iocg->last_stat.indelay_us;
}
iocg->last_stat = new_stat;
iocg_flush_stat_upward(iocg);
}
/* get stat counters ready for reading on all active iocgs */
@ -1699,13 +1692,13 @@ static void iocg_flush_stat(struct list_head *target_iocgs, struct ioc_now *now)
/* flush leaves and build inner node walk list */
list_for_each_entry(iocg, target_iocgs, active_list) {
iocg_flush_stat_one(iocg, now);
iocg_flush_stat_leaf(iocg, now);
iocg_build_inner_walk(iocg, &inner_walk);
}
/* keep flushing upwards by walking the inner list backwards */
list_for_each_entry_safe_reverse(iocg, tiocg, &inner_walk, walk_list) {
iocg_flush_stat_one(iocg, now);
iocg_flush_stat_upward(iocg);
list_del_init(&iocg->walk_list);
}
}
@ -2152,16 +2145,16 @@ static int ioc_check_iocgs(struct ioc *ioc, struct ioc_now *now)
/* flush wait and indebt stat deltas */
if (iocg->wait_since) {
iocg->local_stat.wait_us += now->now - iocg->wait_since;
iocg->stat.wait_us += now->now - iocg->wait_since;
iocg->wait_since = now->now;
}
if (iocg->indebt_since) {
iocg->local_stat.indebt_us +=
iocg->stat.indebt_us +=
now->now - iocg->indebt_since;
iocg->indebt_since = now->now;
}
if (iocg->indelay_since) {
iocg->local_stat.indelay_us +=
iocg->stat.indelay_us +=
now->now - iocg->indelay_since;
iocg->indelay_since = now->now;
}
@ -3005,13 +2998,13 @@ static void ioc_pd_free(struct blkg_policy_data *pd)
kfree(iocg);
}
static bool ioc_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
static void ioc_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
{
struct ioc_gq *iocg = pd_to_iocg(pd);
struct ioc *ioc = iocg->ioc;
if (!ioc->enabled)
return false;
return;
if (iocg->level == 0) {
unsigned vp10k = DIV64_U64_ROUND_CLOSEST(
@ -3027,7 +3020,6 @@ static bool ioc_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
iocg->last_stat.wait_us,
iocg->last_stat.indebt_us,
iocg->last_stat.indelay_us);
return true;
}
static u64 ioc_weight_prfill(struct seq_file *sf, struct blkg_policy_data *pd,

8
block/blk-iolatency.c
View File

@ -891,7 +891,7 @@ static int iolatency_print_limit(struct seq_file *sf, void *v)
return 0;
}
static bool iolatency_ssd_stat(struct iolatency_grp *iolat, struct seq_file *s)
static void iolatency_ssd_stat(struct iolatency_grp *iolat, struct seq_file *s)
{
struct latency_stat stat;
int cpu;
@ -914,17 +914,16 @@ static bool iolatency_ssd_stat(struct iolatency_grp *iolat, struct seq_file *s)
(unsigned long long)stat.ps.missed,
(unsigned long long)stat.ps.total,
iolat->rq_depth.max_depth);
return true;
}
static bool iolatency_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
static void iolatency_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
{
struct iolatency_grp *iolat = pd_to_lat(pd);
unsigned long long avg_lat;
unsigned long long cur_win;
if (!blkcg_debug_stats)
return false;
return;
if (iolat->ssd)
return iolatency_ssd_stat(iolat, s);
@ -937,7 +936,6 @@ static bool iolatency_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
else
seq_printf(s, " depth=%u avg_lat=%llu win=%llu",
iolat->rq_depth.max_depth, avg_lat, cur_win);
return true;
}
static struct blkg_policy_data *iolatency_pd_alloc(gfp_t gfp,

126
block/blk-lib.c
View File

@ -10,30 +10,44 @@
#include "blk.h"
int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, int flags,
struct bio **biop)
static sector_t bio_discard_limit(struct block_device *bdev, sector_t sector)
{
unsigned int discard_granularity = bdev_discard_granularity(bdev);
sector_t granularity_aligned_sector;
if (bdev_is_partition(bdev))
sector += bdev->bd_start_sect;
granularity_aligned_sector =
round_up(sector, discard_granularity >> SECTOR_SHIFT);
/*
* Make sure subsequent bios start aligned to the discard granularity if
* it needs to be split.
*/
if (granularity_aligned_sector != sector)
return granularity_aligned_sector - sector;
/*
* Align the bio size to the discard granularity to make splitting the bio
* at discard granularity boundaries easier in the driver if needed.
*/
return round_down(UINT_MAX, discard_granularity) >> SECTOR_SHIFT;
}
int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, struct bio **biop)
{
struct request_queue *q = bdev_get_queue(bdev);
struct bio *bio = *biop;
unsigned int op;
sector_t bs_mask, part_offset = 0;
sector_t bs_mask;
if (bdev_read_only(bdev))
return -EPERM;
if (flags & BLKDEV_DISCARD_SECURE) {
if (!blk_queue_secure_erase(q))
return -EOPNOTSUPP;
op = REQ_OP_SECURE_ERASE;
} else {
if (!blk_queue_discard(q))
return -EOPNOTSUPP;
op = REQ_OP_DISCARD;
}
if (!bdev_max_discard_sectors(bdev))
return -EOPNOTSUPP;
/* In case the discard granularity isn't set by buggy device driver */
if (WARN_ON_ONCE(!q->limits.discard_granularity)) {
if (WARN_ON_ONCE(!bdev_discard_granularity(bdev))) {
char dev_name[BDEVNAME_SIZE];
bdevname(bdev, dev_name);
@ -48,38 +62,11 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
if (!nr_sects)
return -EINVAL;
/* In case the discard request is in a partition */
if (bdev_is_partition(bdev))
part_offset = bdev->bd_start_sect;
while (nr_sects) {
sector_t granularity_aligned_lba, req_sects;
sector_t sector_mapped = sector + part_offset;
sector_t req_sects =
min(nr_sects, bio_discard_limit(bdev, sector));
granularity_aligned_lba = round_up(sector_mapped,
q->limits.discard_granularity >> SECTOR_SHIFT);
/*
* Check whether the discard bio starts at a discard_granularity
* aligned LBA,
* - If no: set (granularity_aligned_lba - sector_mapped) to
* bi_size of the first split bio, then the second bio will
* start at a discard_granularity aligned LBA on the device.
* - If yes: use bio_aligned_discard_max_sectors() as the max
* possible bi_size of the first split bio. Then when this bio
* is split in device drive, the split ones are very probably
* to be aligned to discard_granularity of the device's queue.
*/
if (granularity_aligned_lba == sector_mapped)
req_sects = min_t(sector_t, nr_sects,
bio_aligned_discard_max_sectors(q));
else
req_sects = min_t(sector_t, nr_sects,
granularity_aligned_lba - sector_mapped);
WARN_ON_ONCE((req_sects << 9) > UINT_MAX);
bio = blk_next_bio(bio, bdev, 0, op, gfp_mask);
bio = blk_next_bio(bio, bdev, 0, REQ_OP_DISCARD, gfp_mask);
bio->bi_iter.bi_sector = sector;
bio->bi_iter.bi_size = req_sects << 9;
sector += req_sects;
@ -105,21 +92,19 @@ EXPORT_SYMBOL(__blkdev_issue_discard);
* @sector: start sector
* @nr_sects: number of sectors to discard
* @gfp_mask: memory allocation flags (for bio_alloc)
* @flags: BLKDEV_DISCARD_* flags to control behaviour
*
* Description:
* Issue a discard request for the sectors in question.
*/
int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
sector_t nr_sects, gfp_t gfp_mask)
{
struct bio *bio = NULL;
struct blk_plug plug;
int ret;
blk_start_plug(&plug);
ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, flags,
&bio);
ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, &bio);
if (!ret && bio) {
ret = submit_bio_wait(bio);
if (ret == -EOPNOTSUPP)
@ -316,3 +301,42 @@ retry:
return ret;
}
EXPORT_SYMBOL(blkdev_issue_zeroout);
int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp)
{
sector_t bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
unsigned int max_sectors = bdev_max_secure_erase_sectors(bdev);
struct bio *bio = NULL;
struct blk_plug plug;
int ret = 0;
if (max_sectors == 0)
return -EOPNOTSUPP;
if ((sector | nr_sects) & bs_mask)
return -EINVAL;
if (bdev_read_only(bdev))
return -EPERM;
blk_start_plug(&plug);
for (;;) {
unsigned int len = min_t(sector_t, nr_sects, max_sectors);
bio = blk_next_bio(bio, bdev, 0, REQ_OP_SECURE_ERASE, gfp);
bio->bi_iter.bi_sector = sector;
bio->bi_iter.bi_size = len;
sector += len << SECTOR_SHIFT;
nr_sects -= len << SECTOR_SHIFT;
if (!nr_sects) {
ret = submit_bio_wait(bio);
bio_put(bio);
break;
}
cond_resched();
}
blk_finish_plug(&plug);
return ret;
}
EXPORT_SYMBOL(blkdev_issue_secure_erase);

47
block/blk-map.c
View File

@ -152,10 +152,10 @@ static int bio_copy_user_iov(struct request *rq, struct rq_map_data *map_data,
nr_pages = bio_max_segs(DIV_ROUND_UP(offset + len, PAGE_SIZE));
ret = -ENOMEM;
bio = bio_kmalloc(gfp_mask, nr_pages);
bio = bio_kmalloc(nr_pages, gfp_mask);
if (!bio)
goto out_bmd;
bio->bi_opf |= req_op(rq);
bio_init(bio, NULL, bio->bi_inline_vecs, nr_pages, req_op(rq));
if (map_data) {
nr_pages = 1 << map_data->page_order;
@ -224,7 +224,8 @@ static int bio_copy_user_iov(struct request *rq, struct rq_map_data *map_data,
cleanup:
if (!map_data)
bio_free_pages(bio);
bio_put(bio);
bio_uninit(bio);
kfree(bio);
out_bmd:
kfree(bmd);
return ret;
@ -234,6 +235,7 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
gfp_t gfp_mask)
{
unsigned int max_sectors = queue_max_hw_sectors(rq->q);
unsigned int nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS);
struct bio *bio;
int ret;
int j;
@ -241,10 +243,10 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
if (!iov_iter_count(iter))
return -EINVAL;
bio = bio_kmalloc(gfp_mask, iov_iter_npages(iter, BIO_MAX_VECS));
bio = bio_kmalloc(nr_vecs, gfp_mask);
if (!bio)
return -ENOMEM;
bio->bi_opf |= req_op(rq);
bio_init(bio, NULL, bio->bi_inline_vecs, nr_vecs, req_op(rq));
while (iov_iter_count(iter)) {
struct page **pages;
@ -260,10 +262,9 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
npages = DIV_ROUND_UP(offs + bytes, PAGE_SIZE);
if (unlikely(offs & queue_dma_alignment(rq->q))) {
ret = -EINVAL;
if (unlikely(offs & queue_dma_alignment(rq->q)))
j = 0;
} else {
else {
for (j = 0; j < npages; j++) {
struct page *page = pages[j];
unsigned int n = PAGE_SIZE - offs;
@ -303,7 +304,8 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
out_unmap:
bio_release_pages(bio, false);
bio_put(bio);
bio_uninit(bio);
kfree(bio);
return ret;
}
@ -323,7 +325,8 @@ static void bio_invalidate_vmalloc_pages(struct bio *bio)
static void bio_map_kern_endio(struct bio *bio)
{
bio_invalidate_vmalloc_pages(bio);
bio_put(bio);
bio_uninit(bio);
kfree(bio);
}
/**
@ -348,9 +351,10 @@ static struct bio *bio_map_kern(struct request_queue *q, void *data,
int offset, i;
struct bio *bio;
bio = bio_kmalloc(gfp_mask, nr_pages);
bio = bio_kmalloc(nr_pages, gfp_mask);
if (!bio)
return ERR_PTR(-ENOMEM);
bio_init(bio, NULL, bio->bi_inline_vecs, nr_pages, 0);
if (is_vmalloc) {
flush_kernel_vmap_range(data, len);
@ -374,7 +378,8 @@ static struct bio *bio_map_kern(struct request_queue *q, void *data,
if (bio_add_pc_page(q, bio, page, bytes,
offset) < bytes) {
/* we don't support partial mappings */
bio_put(bio);
bio_uninit(bio);
kfree(bio);
return ERR_PTR(-EINVAL);
}
@ -390,7 +395,8 @@ static struct bio *bio_map_kern(struct request_queue *q, void *data,
static void bio_copy_kern_endio(struct bio *bio)
{
bio_free_pages(bio);
bio_put(bio);
bio_uninit(bio);
kfree(bio);
}
static void bio_copy_kern_endio_read(struct bio *bio)
@ -435,9 +441,10 @@ static struct bio *bio_copy_kern(struct request_queue *q, void *data,
return ERR_PTR(-EINVAL);
nr_pages = end - start;
bio = bio_kmalloc(gfp_mask, nr_pages);
bio = bio_kmalloc(nr_pages, gfp_mask);
if (!bio)
return ERR_PTR(-ENOMEM);
bio_init(bio, NULL, bio->bi_inline_vecs, nr_pages, 0);
while (len) {
struct page *page;
@ -471,7 +478,8 @@ static struct bio *bio_copy_kern(struct request_queue *q, void *data,
cleanup:
bio_free_pages(bio);
bio_put(bio);
bio_uninit(bio);
kfree(bio);
return ERR_PTR(-ENOMEM);
}
@ -602,7 +610,8 @@ int blk_rq_unmap_user(struct bio *bio)
next_bio = bio;
bio = bio->bi_next;
bio_put(next_bio);
bio_uninit(next_bio);
kfree(next_bio);
}
return ret;
@ -648,8 +657,10 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
bio->bi_opf |= req_op(rq);
ret = blk_rq_append_bio(rq, bio);
if (unlikely(ret))
bio_put(bio);
if (unlikely(ret)) {
bio_uninit(bio);
kfree(bio);
}
return ret;
}
EXPORT_SYMBOL(blk_rq_map_kern);

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

@ -113,10 +113,8 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(FAIL_IO),
QUEUE_FLAG_NAME(NONROT),
QUEUE_FLAG_NAME(IO_STAT),
QUEUE_FLAG_NAME(DISCARD),
QUEUE_FLAG_NAME(NOXMERGES),
QUEUE_FLAG_NAME(ADD_RANDOM),
QUEUE_FLAG_NAME(SECERASE),
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(DEAD),
QUEUE_FLAG_NAME(INIT_DONE),

2
block/blk-mq.c
View File

@ -1083,7 +1083,7 @@ bool blk_mq_complete_request_remote(struct request *rq)
WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
/*
* For a polled request, always complete locallly, it's pointless
* For a polled request, always complete locally, it's pointless
* to redirect the completion.
*/
if (rq->cmd_flags & REQ_POLLED)

74
block/blk-settings.c
View File

@ -46,6 +46,7 @@ void blk_set_default_limits(struct queue_limits *lim)
lim->max_zone_append_sectors = 0;
lim->max_discard_sectors = 0;
lim->max_hw_discard_sectors = 0;
lim->max_secure_erase_sectors = 0;
lim->discard_granularity = 0;
lim->discard_alignment = 0;
lim->discard_misaligned = 0;
@ -176,6 +177,18 @@ void blk_queue_max_discard_sectors(struct request_queue *q,
}
EXPORT_SYMBOL(blk_queue_max_discard_sectors);
/**
* blk_queue_max_secure_erase_sectors - set max sectors for a secure erase
* @q: the request queue for the device
* @max_sectors: maximum number of sectors to secure_erase
**/
void blk_queue_max_secure_erase_sectors(struct request_queue *q,
unsigned int max_sectors)
{
q->limits.max_secure_erase_sectors = max_sectors;
}
EXPORT_SYMBOL(blk_queue_max_secure_erase_sectors);
/**
* blk_queue_max_write_zeroes_sectors - set max sectors for a single
* write zeroes
@ -468,6 +481,40 @@ void blk_queue_io_opt(struct request_queue *q, unsigned int opt)
}
EXPORT_SYMBOL(blk_queue_io_opt);
static int queue_limit_alignment_offset(struct queue_limits *lim,
sector_t sector)
{
unsigned int granularity = max(lim->physical_block_size, lim->io_min);
unsigned int alignment = sector_div(sector, granularity >> SECTOR_SHIFT)
<< SECTOR_SHIFT;
return (granularity + lim->alignment_offset - alignment) % granularity;
}
static unsigned int queue_limit_discard_alignment(struct queue_limits *lim,
sector_t sector)
{
unsigned int alignment, granularity, offset;
if (!lim->max_discard_sectors)
return 0;
/* Why are these in bytes, not sectors? */
alignment = lim->discard_alignment >> SECTOR_SHIFT;
granularity = lim->discard_granularity >> SECTOR_SHIFT;
if (!granularity)
return 0;
/* Offset of the partition start in 'granularity' sectors */
offset = sector_div(sector, granularity);
/* And why do we do this modulus *again* in blkdev_issue_discard()? */
offset = (granularity + alignment - offset) % granularity;
/* Turn it back into bytes, gaah */
return offset << SECTOR_SHIFT;
}
static unsigned int blk_round_down_sectors(unsigned int sectors, unsigned int lbs)
{
sectors = round_down(sectors, lbs >> SECTOR_SHIFT);
@ -627,7 +674,8 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
t->discard_alignment = lcm_not_zero(t->discard_alignment, alignment) %
t->discard_granularity;
}
t->max_secure_erase_sectors = min_not_zero(t->max_secure_erase_sectors,
b->max_secure_erase_sectors);
t->zone_write_granularity = max(t->zone_write_granularity,
b->zone_write_granularity);
t->zoned = max(t->zoned, b->zoned);
@ -901,3 +949,27 @@ void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model)
}
}
EXPORT_SYMBOL_GPL(blk_queue_set_zoned);
int bdev_alignment_offset(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);
if (q->limits.misaligned)
return -1;
if (bdev_is_partition(bdev))
return queue_limit_alignment_offset(&q->limits,
bdev->bd_start_sect);
return q->limits.alignment_offset;
}
EXPORT_SYMBOL_GPL(bdev_alignment_offset);
unsigned int bdev_discard_alignment(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);
if (bdev_is_partition(bdev))
return queue_limit_discard_alignment(&q->limits,
bdev->bd_start_sect);
return q->limits.discard_alignment;
}
EXPORT_SYMBOL_GPL(bdev_discard_alignment);

5
block/blk-throttle.c
View File

@ -227,7 +227,7 @@ static unsigned int tg_iops_limit(struct throtl_grp *tg, int rw)
break; \
if ((__tg)) { \
blk_add_cgroup_trace_msg(__td->queue, \
tg_to_blkg(__tg)->blkcg, "throtl " fmt, ##args);\
&tg_to_blkg(__tg)->blkcg->css, "throtl " fmt, ##args);\
} else { \
blk_add_trace_msg(__td->queue, "throtl " fmt, ##args); \
} \
@ -2189,13 +2189,14 @@ again:
}
out_unlock:
spin_unlock_irq(&q->queue_lock);
bio_set_flag(bio, BIO_THROTTLED);
#ifdef CONFIG_BLK_DEV_THROTTLING_LOW
if (throttled || !td->track_bio_latency)
bio->bi_issue.value |= BIO_ISSUE_THROTL_SKIP_LATENCY;
#endif
spin_unlock_irq(&q->queue_lock);
rcu_read_unlock();
return throttled;
}

21
block/blk.h
View File

@ -346,20 +346,6 @@ static inline unsigned int bio_allowed_max_sectors(struct request_queue *q)
return round_down(UINT_MAX, queue_logical_block_size(q)) >> 9;
}
/*
* The max bio size which is aligned to q->limits.discard_granularity. This
* is a hint to split large discard bio in generic block layer, then if device
* driver needs to split the discard bio into smaller ones, their bi_size can
* be very probably and easily aligned to discard_granularity of the device's
* queue.
*/
static inline unsigned int bio_aligned_discard_max_sectors(
struct request_queue *q)
{
return round_down(UINT_MAX, q->limits.discard_granularity) >>
SECTOR_SHIFT;
}
/*
* Internal io_context interface
*/
@ -450,13 +436,6 @@ extern struct device_attribute dev_attr_events;
extern struct device_attribute dev_attr_events_async;
extern struct device_attribute dev_attr_events_poll_msecs;
static inline void bio_clear_polled(struct bio *bio)
{
/* can't support alloc cache if we turn off polling */
bio_clear_flag(bio, BIO_PERCPU_CACHE);
bio->bi_opf &= ~REQ_POLLED;
}
long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg);
long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg);

1
block/bounce.c
View File

@ -191,7 +191,6 @@ static struct bio *bounce_clone_bio(struct bio *bio_src)
goto err_put;
bio_clone_blkg_association(bio, bio_src);
blkcg_bio_issue_init(bio);
return bio;

35
block/fops.c
View File

@ -44,14 +44,6 @@ static unsigned int dio_bio_write_op(struct kiocb *iocb)
#define DIO_INLINE_BIO_VECS 4
static void blkdev_bio_end_io_simple(struct bio *bio)
{
struct task_struct *waiter = bio->bi_private;
WRITE_ONCE(bio->bi_private, NULL);
blk_wake_io_task(waiter);
}
static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
struct iov_iter *iter, unsigned int nr_pages)
{
@ -83,8 +75,6 @@ static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
bio_init(&bio, bdev, vecs, nr_pages, dio_bio_write_op(iocb));
}
bio.bi_iter.bi_sector = pos >> SECTOR_SHIFT;
bio.bi_private = current;
bio.bi_end_io = blkdev_bio_end_io_simple;
bio.bi_ioprio = iocb->ki_ioprio;
ret = bio_iov_iter_get_pages(&bio, iter);
@ -97,18 +87,8 @@ static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
if (iocb->ki_flags & IOCB_NOWAIT)
bio.bi_opf |= REQ_NOWAIT;
if (iocb->ki_flags & IOCB_HIPRI)
bio_set_polled(&bio, iocb);
submit_bio(&bio);
for (;;) {
set_current_state(TASK_UNINTERRUPTIBLE);
if (!READ_ONCE(bio.bi_private))
break;
if (!(iocb->ki_flags & IOCB_HIPRI) || !bio_poll(&bio, NULL, 0))
blk_io_schedule();
}
__set_current_state(TASK_RUNNING);
submit_bio_wait(&bio);
bio_release_pages(&bio, should_dirty);
if (unlikely(bio.bi_status))
@ -197,8 +177,10 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
(bdev_logical_block_size(bdev) - 1))
return -EINVAL;
bio = bio_alloc_kiocb(iocb, bdev, nr_pages, opf, &blkdev_dio_pool);
if (iocb->ki_flags & IOCB_ALLOC_CACHE)
opf |= REQ_ALLOC_CACHE;
bio = bio_alloc_bioset(bdev, nr_pages, opf, GFP_KERNEL,
&blkdev_dio_pool);
dio = container_of(bio, struct blkdev_dio, bio);
atomic_set(&dio->ref, 1);
/*
@ -320,7 +302,10 @@ static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb,
(bdev_logical_block_size(bdev) - 1))
return -EINVAL;
bio = bio_alloc_kiocb(iocb, bdev, nr_pages, opf, &blkdev_dio_pool);
if (iocb->ki_flags & IOCB_ALLOC_CACHE)
opf |= REQ_ALLOC_CACHE;
bio = bio_alloc_bioset(bdev, nr_pages, opf, GFP_KERNEL,
&blkdev_dio_pool);
dio = container_of(bio, struct blkdev_dio, bio);
dio->flags = 0;
dio->iocb = iocb;
@ -672,7 +657,7 @@ static long blkdev_fallocate(struct file *file, int mode, loff_t start,
break;
case FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE | FALLOC_FL_NO_HIDE_STALE:
error = blkdev_issue_discard(bdev, start >> SECTOR_SHIFT,
len >> SECTOR_SHIFT, GFP_KERNEL, 0);
len >> SECTOR_SHIFT, GFP_KERNEL);
break;
default:
error = -EOPNOTSUPP;

4
block/genhd.c
View File

@ -1010,7 +1010,7 @@ static ssize_t disk_alignment_offset_show(struct device *dev,
{
struct gendisk *disk = dev_to_disk(dev);
return sprintf(buf, "%d\n", queue_alignment_offset(disk->queue));
return sprintf(buf, "%d\n", bdev_alignment_offset(disk->part0));
}
static ssize_t disk_discard_alignment_show(struct device *dev,
@ -1019,7 +1019,7 @@ static ssize_t disk_discard_alignment_show(struct device *dev,
{
struct gendisk *disk = dev_to_disk(dev);
return sprintf(buf, "%d\n", queue_discard_alignment(disk->queue));
return sprintf(buf, "%d\n", bdev_alignment_offset(disk->part0));
}
static ssize_t diskseq_show(struct device *dev,

48
block/ioctl.c
View File

@ -83,18 +83,17 @@ static int compat_blkpg_ioctl(struct block_device *bdev,
#endif
static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
unsigned long arg, unsigned long flags)
unsigned long arg)
{
uint64_t range[2];
uint64_t start, len;
struct request_queue *q = bdev_get_queue(bdev);
struct inode *inode = bdev->bd_inode;
int err;
if (!(mode & FMODE_WRITE))
return -EBADF;
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(bdev))
return -EOPNOTSUPP;
if (copy_from_user(range, (void __user *)arg, sizeof(range)))
@ -115,15 +114,43 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
err = truncate_bdev_range(bdev, mode, start, start + len - 1);
if (err)
goto fail;
err = blkdev_issue_discard(bdev, start >> 9, len >> 9,
GFP_KERNEL, flags);
err = blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL);
fail:
filemap_invalidate_unlock(inode->i_mapping);
return err;
}
static int blk_ioctl_secure_erase(struct block_device *bdev, fmode_t mode,
void __user *argp)
{
uint64_t start, len;
uint64_t range[2];
int err;
if (!(mode & FMODE_WRITE))
return -EBADF;
if (!bdev_max_secure_erase_sectors(bdev))
return -EOPNOTSUPP;
if (copy_from_user(range, argp, sizeof(range)))
return -EFAULT;
start = range[0];
len = range[1];
if ((start & 511) || (len & 511))
return -EINVAL;
if (start + len > bdev_nr_bytes(bdev))
return -EINVAL;
filemap_invalidate_lock(bdev->bd_inode->i_mapping);
err = truncate_bdev_range(bdev, mode, start, start + len - 1);
if (!err)
err = blkdev_issue_secure_erase(bdev, start >> 9, len >> 9,
GFP_KERNEL);
filemap_invalidate_unlock(bdev->bd_inode->i_mapping);
return err;
}
static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,
unsigned long arg)
{
@ -451,10 +478,9 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,
case BLKROSET:
return blkdev_roset(bdev, mode, cmd, arg);
case BLKDISCARD:
return blk_ioctl_discard(bdev, mode, arg, 0);
return blk_ioctl_discard(bdev, mode, arg);
case BLKSECDISCARD:
return blk_ioctl_discard(bdev, mode, arg,
BLKDEV_DISCARD_SECURE);
return blk_ioctl_secure_erase(bdev, mode, argp);
case BLKZEROOUT:
return blk_ioctl_zeroout(bdev, mode, arg);
case BLKGETDISKSEQ:
@ -489,7 +515,7 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,
queue_max_sectors(bdev_get_queue(bdev)));
return put_ushort(argp, max_sectors);
case BLKROTATIONAL:
return put_ushort(argp, !blk_queue_nonrot(bdev_get_queue(bdev)));
return put_ushort(argp, !bdev_nonrot(bdev));
case BLKRASET:
case BLKFRASET:
if(!capable(CAP_SYS_ADMIN))

4
block/partitions/acorn.c
View File

@ -282,13 +282,13 @@ int adfspart_check_ADFS(struct parsed_partitions *state)
#ifdef CONFIG_ACORN_PARTITION_RISCIX
case PARTITION_RISCIX_SCSI:
case PARTITION_RISCIX_MFM:
slot = riscix_partition(state, start_sect, slot,
riscix_partition(state, start_sect, slot,
nr_sects);
break;
#endif
case PARTITION_LINUX:
slot = linux_partition(state, start_sect, slot,
linux_partition(state, start_sect, slot,
nr_sects);
break;
}

1
block/partitions/atari.c
View File

@ -140,7 +140,6 @@ int atari_partition(struct parsed_partitions *state)
/* accept only GEM,BGM,RAW,LNX,SWP partitions */
if (!((pi->flg & 1) && OK_id(pi->id)))
continue;
part_fmt = 2;
put_partition (state, slot,
be32_to_cpu(pi->st),
be32_to_cpu(pi->siz));

12
block/partitions/core.c
View File

@ -200,21 +200,13 @@ static ssize_t part_ro_show(struct device *dev,
static ssize_t part_alignment_offset_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct block_device *bdev = dev_to_bdev(dev);
return sprintf(buf, "%u\n",
queue_limit_alignment_offset(&bdev_get_queue(bdev)->limits,
bdev->bd_start_sect));
return sprintf(buf, "%u\n", bdev_alignment_offset(dev_to_bdev(dev)));
}
static ssize_t part_discard_alignment_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct block_device *bdev = dev_to_bdev(dev);
return sprintf(buf, "%u\n",
queue_limit_discard_alignment(&bdev_get_queue(bdev)->limits,
bdev->bd_start_sect));
return sprintf(buf, "%u\n", bdev_discard_alignment(dev_to_bdev(dev)));
}
static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);

15
block/partitions/ldm.c
View File

@ -736,7 +736,6 @@ static bool ldm_parse_cmp3 (const u8 *buffer, int buflen, struct vblk *vb)
len = r_cols;
} else {
r_stripe = 0;
r_cols = 0;
len = r_parent;
}
if (len < 0)
@ -783,11 +782,8 @@ static int ldm_parse_dgr3 (const u8 *buffer, int buflen, struct vblk *vb)
r_id1 = ldm_relative (buffer, buflen, 0x24, r_diskid);
r_id2 = ldm_relative (buffer, buflen, 0x24, r_id1);
len = r_id2;
} else {
r_id1 = 0;
r_id2 = 0;
} else
len = r_diskid;
}
if (len < 0)
return false;
@ -826,11 +822,8 @@ static bool ldm_parse_dgr4 (const u8 *buffer, int buflen, struct vblk *vb)
r_id1 = ldm_relative (buffer, buflen, 0x44, r_name);
r_id2 = ldm_relative (buffer, buflen, 0x44, r_id1);
len = r_id2;
} else {
r_id1 = 0;
r_id2 = 0;
} else
len = r_name;
}
if (len < 0)
return false;
@ -963,10 +956,8 @@ static bool ldm_parse_prt3(const u8 *buffer, int buflen, struct vblk *vb)
return false;
}
len = r_index;
} else {
r_index = 0;
} else
len = r_diskid;
}
if (len < 0) {
ldm_error("len %d < 0", len);
return false;

51
drivers/block/drbd/drbd_main.c
View File

@ -903,31 +903,6 @@ void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *peer_device)
}
}
/* communicated if (agreed_features & DRBD_FF_WSAME) */
static void
assign_p_sizes_qlim(struct drbd_device *device, struct p_sizes *p,
struct request_queue *q)
{
if (q) {
p->qlim->physical_block_size = cpu_to_be32(queue_physical_block_size(q));
p->qlim->logical_block_size = cpu_to_be32(queue_logical_block_size(q));
p->qlim->alignment_offset = cpu_to_be32(queue_alignment_offset(q));
p->qlim->io_min = cpu_to_be32(queue_io_min(q));
p->qlim->io_opt = cpu_to_be32(queue_io_opt(q));
p->qlim->discard_enabled = blk_queue_discard(q);
p->qlim->write_same_capable = 0;
} else {
q = device->rq_queue;
p->qlim->physical_block_size = cpu_to_be32(queue_physical_block_size(q));
p->qlim->logical_block_size = cpu_to_be32(queue_logical_block_size(q));
p->qlim->alignment_offset = 0;
p->qlim->io_min = cpu_to_be32(queue_io_min(q));
p->qlim->io_opt = cpu_to_be32(queue_io_opt(q));
p->qlim->discard_enabled = 0;
p->qlim->write_same_capable = 0;
}
}
int drbd_send_sizes(struct drbd_peer_device *peer_device, int trigger_reply, enum dds_flags flags)
{
struct drbd_device *device = peer_device->device;
@ -949,7 +924,9 @@ int drbd_send_sizes(struct drbd_peer_device *peer_device, int trigger_reply, enu
memset(p, 0, packet_size);
if (get_ldev_if_state(device, D_NEGOTIATING)) {
struct request_queue *q = bdev_get_queue(device->ldev->backing_bdev);
struct block_device *bdev = device->ldev->backing_bdev;
struct request_queue *q = bdev_get_queue(bdev);
d_size = drbd_get_max_capacity(device->ldev);
rcu_read_lock();
u_size = rcu_dereference(device->ldev->disk_conf)->disk_size;
@ -957,14 +934,32 @@ int drbd_send_sizes(struct drbd_peer_device *peer_device, int trigger_reply, enu
q_order_type = drbd_queue_order_type(device);
max_bio_size = queue_max_hw_sectors(q) << 9;
max_bio_size = min(max_bio_size, DRBD_MAX_BIO_SIZE);
assign_p_sizes_qlim(device, p, q);
p->qlim->physical_block_size =
cpu_to_be32(bdev_physical_block_size(bdev));
p->qlim->logical_block_size =
cpu_to_be32(bdev_logical_block_size(bdev));
p->qlim->alignment_offset =
cpu_to_be32(bdev_alignment_offset(bdev));
p->qlim->io_min = cpu_to_be32(bdev_io_min(bdev));
p->qlim->io_opt = cpu_to_be32(bdev_io_opt(bdev));
p->qlim->discard_enabled = !!bdev_max_discard_sectors(bdev);
put_ldev(device);
} else {
struct request_queue *q = device->rq_queue;
p->qlim->physical_block_size =
cpu_to_be32(queue_physical_block_size(q));
p->qlim->logical_block_size =
cpu_to_be32(queue_logical_block_size(q));
p->qlim->alignment_offset = 0;
p->qlim->io_min = cpu_to_be32(queue_io_min(q));
p->qlim->io_opt = cpu_to_be32(queue_io_opt(q));
p->qlim->discard_enabled = 0;
d_size = 0;
u_size = 0;
q_order_type = QUEUE_ORDERED_NONE;
max_bio_size = DRBD_MAX_BIO_SIZE; /* ... multiple BIOs per peer_request */
assign_p_sizes_qlim(device, p, NULL);
}
if (peer_device->connection->agreed_pro_version <= 94)

94
drivers/block/drbd/drbd_nl.c
View File

@ -1204,50 +1204,40 @@ static unsigned int drbd_max_discard_sectors(struct drbd_connection *connection)
}
static void decide_on_discard_support(struct drbd_device *device,
struct request_queue *q,
struct request_queue *b,
bool discard_zeroes_if_aligned)
struct drbd_backing_dev *bdev)
{
/* q = drbd device queue (device->rq_queue)
* b = backing device queue (device->ldev->backing_bdev->bd_disk->queue),
* or NULL if diskless
struct drbd_connection *connection =
first_peer_device(device)->connection;
struct request_queue *q = device->rq_queue;
if (bdev && !bdev_max_discard_sectors(bdev->backing_bdev))
goto not_supported;
if (connection->cstate >= C_CONNECTED &&
!(connection->agreed_features & DRBD_FF_TRIM)) {
drbd_info(connection,
"peer DRBD too old, does not support TRIM: disabling discards\n");
goto not_supported;
}
/*
* We don't care for the granularity, really.
*
* Stacking limits below should fix it for the local device. Whether or
* not it is a suitable granularity on the remote device is not our
* problem, really. If you care, you need to use devices with similar
* topology on all peers.
*/
struct drbd_connection *connection = first_peer_device(device)->connection;
bool can_do = b ? blk_queue_discard(b) : true;
blk_queue_discard_granularity(q, 512);
q->limits.max_discard_sectors = drbd_max_discard_sectors(connection);
q->limits.max_write_zeroes_sectors =
drbd_max_discard_sectors(connection);
return;
if (can_do && connection->cstate >= C_CONNECTED && !(connection->agreed_features & DRBD_FF_TRIM)) {
can_do = false;
drbd_info(connection, "peer DRBD too old, does not support TRIM: disabling discards\n");
}
if (can_do) {
/* We don't care for the granularity, really.
* Stacking limits below should fix it for the local
* device. Whether or not it is a suitable granularity
* on the remote device is not our problem, really. If
* you care, you need to use devices with similar
* topology on all peers. */
blk_queue_discard_granularity(q, 512);
q->limits.max_discard_sectors = drbd_max_discard_sectors(connection);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
q->limits.max_write_zeroes_sectors = drbd_max_discard_sectors(connection);
} else {
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
blk_queue_discard_granularity(q, 0);
q->limits.max_discard_sectors = 0;
q->limits.max_write_zeroes_sectors = 0;
}
}
static void fixup_discard_if_not_supported(struct request_queue *q)
{
/* To avoid confusion, if this queue does not support discard, clear
* max_discard_sectors, which is what lsblk -D reports to the user.
* Older kernels got this wrong in "stack limits".
* */
if (!blk_queue_discard(q)) {
blk_queue_max_discard_sectors(q, 0);
blk_queue_discard_granularity(q, 0);
}
not_supported:
blk_queue_discard_granularity(q, 0);
q->limits.max_discard_sectors = 0;
q->limits.max_write_zeroes_sectors = 0;
}
static void fixup_write_zeroes(struct drbd_device *device, struct request_queue *q)
@ -1273,7 +1263,6 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
unsigned int max_segments = 0;
struct request_queue *b = NULL;
struct disk_conf *dc;
bool discard_zeroes_if_aligned = true;
if (bdev) {
b = bdev->backing_bdev->bd_disk->queue;
@ -1282,7 +1271,6 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
rcu_read_lock();
dc = rcu_dereference(device->ldev->disk_conf);
max_segments = dc->max_bio_bvecs;
discard_zeroes_if_aligned = dc->discard_zeroes_if_aligned;
rcu_read_unlock();
blk_set_stacking_limits(&q->limits);
@ -1292,13 +1280,12 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
/* This is the workaround for "bio would need to, but cannot, be split" */
blk_queue_max_segments(q, max_segments ? max_segments : BLK_MAX_SEGMENTS);
blk_queue_segment_boundary(q, PAGE_SIZE-1);
decide_on_discard_support(device, q, b, discard_zeroes_if_aligned);
decide_on_discard_support(device, bdev);
if (b) {
blk_stack_limits(&q->limits, &b->limits, 0);
disk_update_readahead(device->vdisk);
}
fixup_discard_if_not_supported(q);
fixup_write_zeroes(device, q);
}
@ -1437,14 +1424,14 @@ static bool write_ordering_changed(struct disk_conf *a, struct disk_conf *b)
static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *disk_conf,
struct drbd_backing_dev *nbc)
{
struct request_queue * const q = nbc->backing_bdev->bd_disk->queue;
struct block_device *bdev = nbc->backing_bdev;
if (disk_conf->al_extents < DRBD_AL_EXTENTS_MIN)
disk_conf->al_extents = DRBD_AL_EXTENTS_MIN;
if (disk_conf->al_extents > drbd_al_extents_max(nbc))
disk_conf->al_extents = drbd_al_extents_max(nbc);
if (!blk_queue_discard(q)) {
if (!bdev_max_discard_sectors(bdev)) {
if (disk_conf->rs_discard_granularity) {
disk_conf->rs_discard_granularity = 0; /* disable feature */
drbd_info(device, "rs_discard_granularity feature disabled\n");
@ -1453,16 +1440,19 @@ static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *dis
if (disk_conf->rs_discard_granularity) {
int orig_value = disk_conf->rs_discard_granularity;
sector_t discard_size = bdev_max_discard_sectors(bdev) << 9;
unsigned int discard_granularity = bdev_discard_granularity(bdev);
int remainder;
if (q->limits.discard_granularity > disk_conf->rs_discard_granularity)
disk_conf->rs_discard_granularity = q->limits.discard_granularity;
if (discard_granularity > disk_conf->rs_discard_granularity)
disk_conf->rs_discard_granularity = discard_granularity;
remainder = disk_conf->rs_discard_granularity % q->limits.discard_granularity;
remainder = disk_conf->rs_discard_granularity %
discard_granularity;
disk_conf->rs_discard_granularity += remainder;
if (disk_conf->rs_discard_granularity > q->limits.max_discard_sectors << 9)
disk_conf->rs_discard_granularity = q->limits.max_discard_sectors << 9;
if (disk_conf->rs_discard_granularity > discard_size)
disk_conf->rs_discard_granularity = discard_size;
if (disk_conf->rs_discard_granularity != orig_value)
drbd_info(device, "rs_discard_granularity changed to %d\n",

13
drivers/block/drbd/drbd_receiver.c
View File

@ -1511,7 +1511,6 @@ void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backin
int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, unsigned int nr_sectors, int flags)
{
struct block_device *bdev = device->ldev->backing_bdev;
struct request_queue *q = bdev_get_queue(bdev);
sector_t tmp, nr;
unsigned int max_discard_sectors, granularity;
int alignment;
@ -1521,10 +1520,10 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u
goto zero_out;
/* Zero-sector (unknown) and one-sector granularities are the same. */
granularity = max(q->limits.discard_granularity >> 9, 1U);
granularity = max(bdev_discard_granularity(bdev) >> 9, 1U);
alignment = (bdev_discard_alignment(bdev) >> 9) % granularity;
max_discard_sectors = min(q->limits.max_discard_sectors, (1U << 22));
max_discard_sectors = min(bdev_max_discard_sectors(bdev), (1U << 22));
max_discard_sectors -= max_discard_sectors % granularity;
if (unlikely(!max_discard_sectors))
goto zero_out;
@ -1548,7 +1547,8 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u
start = tmp;
}
while (nr_sectors >= max_discard_sectors) {
err |= blkdev_issue_discard(bdev, start, max_discard_sectors, GFP_NOIO, 0);
err |= blkdev_issue_discard(bdev, start, max_discard_sectors,
GFP_NOIO);
nr_sectors -= max_discard_sectors;
start += max_discard_sectors;
}
@ -1560,7 +1560,7 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u
nr = nr_sectors;
nr -= (unsigned int)nr % granularity;
if (nr) {
err |= blkdev_issue_discard(bdev, start, nr, GFP_NOIO, 0);
err |= blkdev_issue_discard(bdev, start, nr, GFP_NOIO);
nr_sectors -= nr;
start += nr;
}
@ -1575,11 +1575,10 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u
static bool can_do_reliable_discards(struct drbd_device *device)
{
struct request_queue *q = bdev_get_queue(device->ldev->backing_bdev);
struct disk_conf *dc;
bool can_do;
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(device->ldev->backing_bdev))
return false;
rcu_read_lock();

27
drivers/block/loop.c
View File

@ -314,15 +314,12 @@ static int lo_fallocate(struct loop_device *lo, struct request *rq, loff_t pos,
mode |= FALLOC_FL_KEEP_SIZE;
if (!blk_queue_discard(lo->lo_queue)) {
ret = -EOPNOTSUPP;
goto out;
}
if (!bdev_max_discard_sectors(lo->lo_device))
return -EOPNOTSUPP;
ret = file->f_op->fallocate(file, mode, pos, blk_rq_bytes(rq));
if (unlikely(ret && ret != -EINVAL && ret != -EOPNOTSUPP))
ret = -EIO;
out:
return -EIO;
return ret;
}
@ -762,7 +759,7 @@ static void loop_config_discard(struct loop_device *lo)
struct request_queue *backingq = bdev_get_queue(I_BDEV(inode));
max_discard_sectors = backingq->limits.max_write_zeroes_sectors;
granularity = backingq->limits.discard_granularity ?:
granularity = bdev_discard_granularity(I_BDEV(inode)) ?:
queue_physical_block_size(backingq);
/*
@ -787,12 +784,10 @@ static void loop_config_discard(struct loop_device *lo)
q->limits.discard_granularity = granularity;
blk_queue_max_discard_sectors(q, max_discard_sectors);
blk_queue_max_write_zeroes_sectors(q, max_discard_sectors);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
} else {
q->limits.discard_granularity = 0;
blk_queue_max_discard_sectors(q, 0);
blk_queue_max_write_zeroes_sectors(q, 0);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
}
q->limits.discard_alignment = 0;
}
@ -903,7 +898,7 @@ static void loop_update_rotational(struct loop_device *lo)
/* not all filesystems (e.g. tmpfs) have a sb->s_bdev */
if (file_bdev)
nonrot = blk_queue_nonrot(bdev_get_queue(file_bdev));
nonrot = bdev_nonrot(file_bdev);
if (nonrot)
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
@ -1834,12 +1829,14 @@ static blk_status_t loop_queue_rq(struct blk_mq_hw_ctx *hctx,
cmd->blkcg_css = NULL;
cmd->memcg_css = NULL;
#ifdef CONFIG_BLK_CGROUP
if (rq->bio && rq->bio->bi_blkg) {
cmd->blkcg_css = &bio_blkcg(rq->bio)->css;
if (rq->bio) {
cmd->blkcg_css = bio_blkcg_css(rq->bio);
#ifdef CONFIG_MEMCG
cmd->memcg_css =
cgroup_get_e_css(cmd->blkcg_css->cgroup,
&memory_cgrp_subsys);
if (cmd->blkcg_css) {
cmd->memcg_css =
cgroup_get_e_css(cmd->blkcg_css->cgroup,
&memory_cgrp_subsys);
}
#endif
}
#endif

5
drivers/block/nbd.c
View File

@ -1231,8 +1231,6 @@ static void nbd_parse_flags(struct nbd_device *nbd)
set_disk_ro(nbd->disk, true);
else
set_disk_ro(nbd->disk, false);
if (config->flags & NBD_FLAG_SEND_TRIM)
blk_queue_flag_set(QUEUE_FLAG_DISCARD, nbd->disk->queue);
if (config->flags & NBD_FLAG_SEND_FLUSH) {
if (config->flags & NBD_FLAG_SEND_FUA)
blk_queue_write_cache(nbd->disk->queue, true, true);
@ -1319,8 +1317,7 @@ static void nbd_config_put(struct nbd_device *nbd)
nbd->tag_set.timeout = 0;
nbd->disk->queue->limits.discard_granularity = 0;
nbd->disk->queue->limits.discard_alignment = 0;
blk_queue_max_discard_sectors(nbd->disk->queue, UINT_MAX);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, nbd->disk->queue);
blk_queue_max_discard_sectors(nbd->disk->queue, 0);
mutex_unlock(&nbd->config_lock);
nbd_put(nbd);

1
drivers/block/null_blk/main.c
View File

@ -1767,7 +1767,6 @@ static void null_config_discard(struct nullb *nullb)
nullb->q->limits.discard_granularity = nullb->dev->blocksize;
nullb->q->limits.discard_alignment = nullb->dev->blocksize;
blk_queue_max_discard_sectors(nullb->q, UINT_MAX >> 9);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, nullb->q);
}
static const struct block_device_operations null_bio_ops = {

34
drivers/block/pktcdvd.c
View File

@ -522,7 +522,7 @@ static struct packet_data *pkt_alloc_packet_data(int frames)
goto no_pkt;
pkt->frames = frames;
pkt->w_bio = bio_kmalloc(GFP_KERNEL, frames);
pkt->w_bio = bio_kmalloc(frames, GFP_KERNEL);
if (!pkt->w_bio)
goto no_bio;
@ -536,27 +536,21 @@ static struct packet_data *pkt_alloc_packet_data(int frames)
bio_list_init(&pkt->orig_bios);
for (i = 0; i < frames; i++) {
struct bio *bio = bio_kmalloc(GFP_KERNEL, 1);
if (!bio)
pkt->r_bios[i] = bio_kmalloc(1, GFP_KERNEL);
if (!pkt->r_bios[i])
goto no_rd_bio;
pkt->r_bios[i] = bio;
}
return pkt;
no_rd_bio:
for (i = 0; i < frames; i++) {
struct bio *bio = pkt->r_bios[i];
if (bio)
bio_put(bio);
}
for (i = 0; i < frames; i++)
kfree(pkt->r_bios[i]);
no_page:
for (i = 0; i < frames / FRAMES_PER_PAGE; i++)
if (pkt->pages[i])
__free_page(pkt->pages[i]);
bio_put(pkt->w_bio);
kfree(pkt->w_bio);
no_bio:
kfree(pkt);
no_pkt:
@ -570,14 +564,11 @@ static void pkt_free_packet_data(struct packet_data *pkt)
{
int i;
for (i = 0; i < pkt->frames; i++) {
struct bio *bio = pkt->r_bios[i];
if (bio)
bio_put(bio);
}
for (i = 0; i < pkt->frames; i++)
kfree(pkt->r_bios[i]);
for (i = 0; i < pkt->frames / FRAMES_PER_PAGE; i++)
__free_page(pkt->pages[i]);
bio_put(pkt->w_bio);
kfree(pkt->w_bio);
kfree(pkt);
}
@ -951,6 +942,7 @@ static void pkt_end_io_read(struct bio *bio)
if (bio->bi_status)
atomic_inc(&pkt->io_errors);
bio_uninit(bio);
if (atomic_dec_and_test(&pkt->io_wait)) {
atomic_inc(&pkt->run_sm);
wake_up(&pd->wqueue);
@ -968,6 +960,7 @@ static void pkt_end_io_packet_write(struct bio *bio)
pd->stats.pkt_ended++;
bio_uninit(bio);
pkt_bio_finished(pd);
atomic_dec(&pkt->io_wait);
atomic_inc(&pkt->run_sm);
@ -1022,7 +1015,7 @@ static void pkt_gather_data(struct pktcdvd_device *pd, struct packet_data *pkt)
continue;
bio = pkt->r_bios[f];
bio_reset(bio, pd->bdev, REQ_OP_READ);
bio_init(bio, pd->bdev, bio->bi_inline_vecs, 1, REQ_OP_READ);
bio->bi_iter.bi_sector = pkt->sector + f * (CD_FRAMESIZE >> 9);
bio->bi_end_io = pkt_end_io_read;
bio->bi_private = pkt;
@ -1235,7 +1228,8 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
{
int f;
bio_reset(pkt->w_bio, pd->bdev, REQ_OP_WRITE);
bio_init(pkt->w_bio, pd->bdev, pkt->w_bio->bi_inline_vecs, pkt->frames,
REQ_OP_WRITE);
pkt->w_bio->bi_iter.bi_sector = pkt->sector;
pkt->w_bio->bi_end_io = pkt_end_io_packet_write;
pkt->w_bio->bi_private = pkt;

1
drivers/block/rbd.c
View File

@ -4942,7 +4942,6 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
blk_queue_io_opt(q, rbd_dev->opts->alloc_size);
if (rbd_dev->opts->trim) {
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
q->limits.discard_granularity = rbd_dev->opts->alloc_size;
blk_queue_max_discard_sectors(q, objset_bytes >> SECTOR_SHIFT);
blk_queue_max_write_zeroes_sectors(q, objset_bytes >> SECTOR_SHIFT);

6
drivers/block/rnbd/rnbd-clt.c
View File

@ -1364,11 +1364,9 @@ static void setup_request_queue(struct rnbd_clt_dev *dev)
blk_queue_max_discard_sectors(dev->queue, dev->max_discard_sectors);
dev->queue->limits.discard_granularity = dev->discard_granularity;
dev->queue->limits.discard_alignment = dev->discard_alignment;
if (dev->max_discard_sectors)
blk_queue_flag_set(QUEUE_FLAG_DISCARD, dev->queue);
if (dev->secure_discard)
blk_queue_flag_set(QUEUE_FLAG_SECERASE, dev->queue);
blk_queue_max_secure_erase_sectors(dev->queue,
dev->max_discard_sectors);
blk_queue_flag_set(QUEUE_FLAG_SAME_COMP, dev->queue);
blk_queue_flag_set(QUEUE_FLAG_SAME_FORCE, dev->queue);
blk_queue_max_segments(dev->queue, dev->max_segments);

8
drivers/block/rnbd/rnbd-srv-dev.h
View File

@ -44,16 +44,12 @@ static inline int rnbd_dev_get_max_hw_sects(const struct rnbd_dev *dev)
static inline int rnbd_dev_get_secure_discard(const struct rnbd_dev *dev)
{
return blk_queue_secure_erase(bdev_get_queue(dev->bdev));
return bdev_max_secure_erase_sectors(dev->bdev);
}
static inline int rnbd_dev_get_max_discard_sects(const struct rnbd_dev *dev)
{
if (!blk_queue_discard(bdev_get_queue(dev->bdev)))
return 0;
return blk_queue_get_max_sectors(bdev_get_queue(dev->bdev),
REQ_OP_DISCARD);
return bdev_max_discard_sectors(dev->bdev);
}
static inline int rnbd_dev_get_discard_granularity(const struct rnbd_dev *dev)

5
drivers/block/rnbd/rnbd-srv.c
View File

@ -533,7 +533,6 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
struct rnbd_srv_sess_dev *sess_dev)
{
struct rnbd_dev *rnbd_dev = sess_dev->rnbd_dev;
struct request_queue *q = bdev_get_queue(rnbd_dev->bdev);
rsp->hdr.type = cpu_to_le16(RNBD_MSG_OPEN_RSP);
rsp->device_id =
@ -558,9 +557,9 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
rsp->secure_discard =
cpu_to_le16(rnbd_dev_get_secure_discard(rnbd_dev));
rsp->cache_policy = 0;
if (test_bit(QUEUE_FLAG_WC, &q->queue_flags))
if (bdev_write_cache(rnbd_dev->bdev))
rsp->cache_policy |= RNBD_WRITEBACK;
if (blk_queue_fua(q))
if (bdev_fua(rnbd_dev->bdev))
rsp->cache_policy |= RNBD_FUA;
}

2
drivers/block/virtio_blk.c
View File

@ -888,8 +888,6 @@ static int virtblk_probe(struct virtio_device *vdev)
v = sg_elems;
blk_queue_max_discard_segments(q,
min(v, MAX_DISCARD_SEGMENTS));
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
}
if (virtio_has_feature(vdev, VIRTIO_BLK_F_WRITE_ZEROES)) {

15
drivers/block/xen-blkback/blkback.c
View File

@ -970,7 +970,6 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
int status = BLKIF_RSP_OKAY;
struct xen_blkif *blkif = ring->blkif;
struct block_device *bdev = blkif->vbd.bdev;
unsigned long secure;
struct phys_req preq;
xen_blkif_get(blkif);
@ -987,13 +986,15 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
}
ring->st_ds_req++;
secure = (blkif->vbd.discard_secure &&
(req->u.discard.flag & BLKIF_DISCARD_SECURE)) ?
BLKDEV_DISCARD_SECURE : 0;
if (blkif->vbd.discard_secure &&
(req->u.discard.flag & BLKIF_DISCARD_SECURE))
err = blkdev_issue_secure_erase(bdev,
req->u.discard.sector_number,
req->u.discard.nr_sectors, GFP_KERNEL);
else
err = blkdev_issue_discard(bdev, req->u.discard.sector_number,
req->u.discard.nr_sectors, GFP_KERNEL);
err = blkdev_issue_discard(bdev, req->u.discard.sector_number,
req->u.discard.nr_sectors,
GFP_KERNEL, secure);
fail_response:
if (err == -EOPNOTSUPP) {
pr_debug("discard op failed, not supported\n");

9
drivers/block/xen-blkback/xenbus.c
View File

@ -484,7 +484,6 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
{
struct xen_vbd *vbd;
struct block_device *bdev;
struct request_queue *q;
vbd = &blkif->vbd;
vbd->handle = handle;
@ -516,11 +515,9 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE)
vbd->type |= VDISK_REMOVABLE;
q = bdev_get_queue(bdev);
if (q && test_bit(QUEUE_FLAG_WC, &q->queue_flags))
if (bdev_write_cache(bdev))
vbd->flush_support = true;
if (q && blk_queue_secure_erase(q))
if (bdev_max_secure_erase_sectors(bdev))
vbd->discard_secure = true;
vbd->feature_gnt_persistent = feature_persistent;
@ -583,7 +580,7 @@ static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info
if (!xenbus_read_unsigned(dev->nodename, "discard-enable", 1))
return;
if (blk_queue_discard(q)) {
if (bdev_max_discard_sectors(bdev)) {
err = xenbus_printf(xbt, dev->nodename,
"discard-granularity", "%u",
q->limits.discard_granularity);

8
drivers/block/xen-blkfront.c
View File

@ -944,13 +944,13 @@ static void blkif_set_queue_limits(struct blkfront_info *info)
blk_queue_flag_set(QUEUE_FLAG_VIRT, rq);
if (info->feature_discard) {
blk_queue_flag_set(QUEUE_FLAG_DISCARD, rq);
blk_queue_max_discard_sectors(rq, get_capacity(gd));
rq->limits.discard_granularity = info->discard_granularity ?:
info->physical_sector_size;
rq->limits.discard_alignment = info->discard_alignment;
if (info->feature_secdiscard)
blk_queue_flag_set(QUEUE_FLAG_SECERASE, rq);
blk_queue_max_secure_erase_sectors(rq,
get_capacity(gd));
}
/* Hard sector size and max sectors impersonate the equiv. hardware. */
@ -1606,8 +1606,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
blkif_req(req)->error = BLK_STS_NOTSUPP;
info->feature_discard = 0;
info->feature_secdiscard = 0;
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, rq);
blk_queue_flag_clear(QUEUE_FLAG_SECERASE, rq);
blk_queue_max_discard_sectors(rq, 0);
blk_queue_max_secure_erase_sectors(rq, 0);
}
break;
case BLKIF_OP_FLUSH_DISKCACHE:

6
drivers/block/zram/zram_drv.c
View File

@ -1675,9 +1675,10 @@ static int zram_rw_page(struct block_device *bdev, sector_t sector,
bv.bv_len = PAGE_SIZE;
bv.bv_offset = 0;
start_time = disk_start_io_acct(bdev->bd_disk, SECTORS_PER_PAGE, op);
start_time = bdev_start_io_acct(bdev->bd_disk->part0,
SECTORS_PER_PAGE, op, jiffies);
ret = zram_bvec_rw(zram, &bv, index, offset, op, NULL);
disk_end_io_acct(bdev->bd_disk, op, start_time);
bdev_end_io_acct(bdev->bd_disk->part0, op, start_time);
out:
/*
* If I/O fails, just return error(ie, non-zero) without
@ -1952,7 +1953,6 @@ static int zram_add(void)
blk_queue_io_opt(zram->disk->queue, PAGE_SIZE);
zram->disk->queue->limits.discard_granularity = PAGE_SIZE;
blk_queue_max_discard_sectors(zram->disk->queue, UINT_MAX);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, zram->disk->queue);
/*
* zram_bio_discard() will clear all logical blocks if logical block

2
drivers/md/bcache/alloc.c
View File

@ -336,7 +336,7 @@ static int bch_allocator_thread(void *arg)
mutex_unlock(&ca->set->bucket_lock);
blkdev_issue_discard(ca->bdev,
bucket_to_sector(ca->set, bucket),
ca->sb.bucket_size, GFP_KERNEL, 0);
ca->sb.bucket_size, GFP_KERNEL);
mutex_lock(&ca->set->bucket_lock);
}

10
drivers/md/bcache/debug.c
View File

@ -107,15 +107,16 @@ void bch_btree_verify(struct btree *b)
void bch_data_verify(struct cached_dev *dc, struct bio *bio)
{
unsigned int nr_segs = bio_segments(bio);
struct bio *check;
struct bio_vec bv, cbv;
struct bvec_iter iter, citer = { 0 };
check = bio_kmalloc(GFP_NOIO, bio_segments(bio));
check = bio_kmalloc(nr_segs, GFP_NOIO);
if (!check)
return;
bio_set_dev(check, bio->bi_bdev);
check->bi_opf = REQ_OP_READ;
bio_init(check, bio->bi_bdev, check->bi_inline_vecs, nr_segs,
REQ_OP_READ);
check->bi_iter.bi_sector = bio->bi_iter.bi_sector;
check->bi_iter.bi_size = bio->bi_iter.bi_size;
@ -146,7 +147,8 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
bio_free_pages(check);
out_put:
bio_put(check);
bio_uninit(check);
kfree(check);
}
#endif

4
drivers/md/bcache/request.c
View File

@ -1005,7 +1005,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
bio_get(s->iop.bio);
if (bio_op(bio) == REQ_OP_DISCARD &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
!bdev_max_discard_sectors(dc->bdev))
goto insert_data;
/* I/O request sent to backing device */
@ -1115,7 +1115,7 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio,
bio->bi_private = ddip;
if ((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
!bdev_max_discard_sectors(dc->bdev))
bio->bi_end_io(bio);
else
submit_bio_noacct(bio);

3
drivers/md/bcache/super.c
View File

@ -973,7 +973,6 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size,
blk_queue_flag_set(QUEUE_FLAG_NONROT, d->disk->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, d->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, d->disk->queue);
blk_queue_write_cache(q, true, true);
@ -2350,7 +2349,7 @@ static int register_cache(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
ca->bdev->bd_holder = ca;
ca->sb_disk = sb_disk;
if (blk_queue_discard(bdev_get_queue(bdev)))
if (bdev_max_discard_sectors((bdev)))
ca->discard = CACHE_DISCARD(&ca->sb);
ret = cache_alloc(ca);

2
drivers/md/bcache/sysfs.c
View File

@ -1151,7 +1151,7 @@ STORE(__bch_cache)
if (attr == &sysfs_discard) {
bool v = strtoul_or_return(buf);
if (blk_queue_discard(bdev_get_queue(ca->bdev)))
if (bdev_max_discard_sectors(ca->bdev))
ca->discard = v;
if (v != CACHE_DISCARD(&ca->sb)) {

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

@ -611,7 +611,8 @@ static void bio_complete(struct bio *bio)
{
struct dm_buffer *b = bio->bi_private;
blk_status_t status = bio->bi_status;
bio_put(bio);
bio_uninit(bio);
kfree(bio);
b->end_io(b, status);
}
@ -626,16 +627,14 @@ static void use_bio(struct dm_buffer *b, int rw, sector_t sector,
if (unlikely(b->c->sectors_per_block_bits < PAGE_SHIFT - SECTOR_SHIFT))
vec_size += 2;
bio = bio_kmalloc(GFP_NOWAIT | __GFP_NORETRY | __GFP_NOWARN, vec_size);
bio = bio_kmalloc(vec_size, GFP_NOWAIT | __GFP_NORETRY | __GFP_NOWARN);
if (!bio) {
dmio:
use_dmio(b, rw, sector, n_sectors, offset);
return;
}
bio_init(bio, b->c->bdev, bio->bi_inline_vecs, vec_size, rw);
bio->bi_iter.bi_sector = sector;
bio_set_dev(bio, b->c->bdev);
bio_set_op_attrs(bio, rw, 0);
bio->bi_end_io = bio_complete;
bio->bi_private = b;

9
drivers/md/dm-cache-target.c
View File

@ -3329,13 +3329,6 @@ static int cache_iterate_devices(struct dm_target *ti,
return r;
}
static bool origin_dev_supports_discard(struct block_device *origin_bdev)
{
struct request_queue *q = bdev_get_queue(origin_bdev);
return blk_queue_discard(q);
}
/*
* If discard_passdown was enabled verify that the origin device
* supports discards. Disable discard_passdown if not.
@ -3349,7 +3342,7 @@ static void disable_passdown_if_not_supported(struct cache *cache)
if (!cache->features.discard_passdown)
return;
if (!origin_dev_supports_discard(origin_bdev))
if (!bdev_max_discard_sectors(origin_bdev))
reason = "discard unsupported";
else if (origin_limits->max_discard_sectors < cache->sectors_per_block)

9
drivers/md/dm-clone-target.c
View File

@ -2016,13 +2016,6 @@ static void clone_resume(struct dm_target *ti)
do_waker(&clone->waker.work);
}
static bool bdev_supports_discards(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);
return (q && blk_queue_discard(q));
}
/*
* If discard_passdown was enabled verify that the destination device supports
* discards. Disable discard_passdown if not.
@ -2036,7 +2029,7 @@ static void disable_passdown_if_not_supported(struct clone *clone)
if (!test_bit(DM_CLONE_DISCARD_PASSDOWN, &clone->flags))
return;
if (!bdev_supports_discards(dest_dev))
if (!bdev_max_discard_sectors(dest_dev))
reason = "discard unsupported";
else if (dest_limits->max_discard_sectors < clone->region_size)
reason = "max discard sectors smaller than a region";

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

@ -311,7 +311,7 @@ static void do_region(int op, int op_flags, unsigned region,
* Reject unsupported discard and write same requests.
*/
if (op == REQ_OP_DISCARD)
special_cmd_max_sectors = q->limits.max_discard_sectors;
special_cmd_max_sectors = bdev_max_discard_sectors(where->bdev);
else if (op == REQ_OP_WRITE_ZEROES)
special_cmd_max_sectors = q->limits.max_write_zeroes_sectors;
if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_ZEROES) &&

3
drivers/md/dm-log-writes.c
View File

@ -866,9 +866,8 @@ static int log_writes_message(struct dm_target *ti, unsigned argc, char **argv,
static void log_writes_io_hints(struct dm_target *ti, struct queue_limits *limits)
{
struct log_writes_c *lc = ti->private;
struct request_queue *q = bdev_get_queue(lc->dev->bdev);
if (!q || !blk_queue_discard(q)) {
if (!bdev_max_discard_sectors(lc->dev->bdev)) {
lc->device_supports_discard = false;
limits->discard_granularity = lc->sectorsize;
limits->max_discard_sectors = (UINT_MAX >> SECTOR_SHIFT);

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

@ -2963,13 +2963,8 @@ static void configure_discard_support(struct raid_set *rs)
raid456 = rs_is_raid456(rs);
for (i = 0; i < rs->raid_disks; i++) {
struct request_queue *q;
if (!rs->dev[i].rdev.bdev)
continue;
q = bdev_get_queue(rs->dev[i].rdev.bdev);
if (!q || !blk_queue_discard(q))
if (!rs->dev[i].rdev.bdev ||
!bdev_max_discard_sectors(rs->dev[i].rdev.bdev))
return;
if (raid456) {

25
drivers/md/dm-table.c
View File

@ -1820,9 +1820,7 @@ static int device_dax_write_cache_enabled(struct dm_target *ti,
static int device_is_rotational(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
return !blk_queue_nonrot(q);
return !bdev_nonrot(dev->bdev);
}
static int device_is_not_random(struct dm_target *ti, struct dm_dev *dev,
@ -1890,9 +1888,7 @@ static bool dm_table_supports_nowait(struct dm_table *t)
static int device_not_discard_capable(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
return !blk_queue_discard(q);
return !bdev_max_discard_sectors(dev->bdev);
}
static bool dm_table_supports_discards(struct dm_table *t)
@ -1924,9 +1920,7 @@ static int device_not_secure_erase_capable(struct dm_target *ti,
struct dm_dev *dev, sector_t start,
sector_t len, void *data)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
return !blk_queue_secure_erase(q);
return !bdev_max_secure_erase_sectors(dev->bdev);
}
static bool dm_table_supports_secure_erase(struct dm_table *t)
@ -1952,9 +1946,7 @@ static int device_requires_stable_pages(struct dm_target *ti,
struct dm_dev *dev, sector_t start,
sector_t len, void *data)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
return blk_queue_stable_writes(q);
return bdev_stable_writes(dev->bdev);
}
int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
@ -1974,18 +1966,15 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
blk_queue_flag_clear(QUEUE_FLAG_NOWAIT, q);
if (!dm_table_supports_discards(t)) {
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
/* Must also clear discard limits... */
q->limits.max_discard_sectors = 0;
q->limits.max_hw_discard_sectors = 0;
q->limits.discard_granularity = 0;
q->limits.discard_alignment = 0;
q->limits.discard_misaligned = 0;
} else
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
}
if (dm_table_supports_secure_erase(t))
blk_queue_flag_set(QUEUE_FLAG_SECERASE, q);
if (!dm_table_supports_secure_erase(t))
q->limits.max_secure_erase_sectors = 0;
if (dm_table_supports_flush(t, (1UL << QUEUE_FLAG_WC))) {
wc = true;

15
drivers/md/dm-thin.c
View File

@ -398,8 +398,8 @@ static int issue_discard(struct discard_op *op, dm_block_t data_b, dm_block_t da
sector_t s = block_to_sectors(tc->pool, data_b);
sector_t len = block_to_sectors(tc->pool, data_e - data_b);
return __blkdev_issue_discard(tc->pool_dev->bdev, s, len,
GFP_NOWAIT, 0, &op->bio);
return __blkdev_issue_discard(tc->pool_dev->bdev, s, len, GFP_NOWAIT,
&op->bio);
}
static void end_discard(struct discard_op *op, int r)
@ -2802,13 +2802,6 @@ static void requeue_bios(struct pool *pool)
/*----------------------------------------------------------------
* Binding of control targets to a pool object
*--------------------------------------------------------------*/
static bool data_dev_supports_discard(struct pool_c *pt)
{
struct request_queue *q = bdev_get_queue(pt->data_dev->bdev);
return blk_queue_discard(q);
}
static bool is_factor(sector_t block_size, uint32_t n)
{
return !sector_div(block_size, n);
@ -2828,7 +2821,7 @@ static void disable_passdown_if_not_supported(struct pool_c *pt)
if (!pt->adjusted_pf.discard_passdown)
return;
if (!data_dev_supports_discard(pt))
if (!bdev_max_discard_sectors(pt->data_dev->bdev))
reason = "discard unsupported";
else if (data_limits->max_discard_sectors < pool->sectors_per_block)
@ -4057,8 +4050,6 @@ static void pool_io_hints(struct dm_target *ti, struct queue_limits *limits)
/*
* Must explicitly disallow stacking discard limits otherwise the
* block layer will stack them if pool's data device has support.
* QUEUE_FLAG_DISCARD wouldn't be set but there is no way for the
* user to see that, so make sure to set all discard limits to 0.
*/
limits->discard_granularity = 0;
return;

3
drivers/md/dm.c
View File

@ -955,7 +955,6 @@ void disable_discard(struct mapped_device *md)
/* device doesn't really support DISCARD, disable it */
limits->max_discard_sectors = 0;
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, md->queue);
}
void disable_write_zeroes(struct mapped_device *md)
@ -982,7 +981,7 @@ static void clone_endio(struct bio *bio)
if (unlikely(error == BLK_STS_TARGET)) {
if (bio_op(bio) == REQ_OP_DISCARD &&
!q->limits.max_discard_sectors)
!bdev_max_discard_sectors(bio->bi_bdev))
disable_discard(md);
else if (bio_op(bio) == REQ_OP_WRITE_ZEROES &&
!q->limits.max_write_zeroes_sectors)

11
drivers/md/md-linear.c
View File

@ -64,7 +64,6 @@ static struct linear_conf *linear_conf(struct mddev *mddev, int raid_disks)
struct linear_conf *conf;
struct md_rdev *rdev;
int i, cnt;
bool discard_supported = false;
conf = kzalloc(struct_size(conf, disks, raid_disks), GFP_KERNEL);
if (!conf)
@ -96,9 +95,6 @@ static struct linear_conf *linear_conf(struct mddev *mddev, int raid_disks)
conf->array_sectors += rdev->sectors;
cnt++;
if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
discard_supported = true;
}
if (cnt != raid_disks) {
pr_warn("md/linear:%s: not enough drives present. Aborting!\n",
@ -106,11 +102,6 @@ static struct linear_conf *linear_conf(struct mddev *mddev, int raid_disks)
goto out;
}
if (!discard_supported)
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, mddev->queue);
else
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
/*
* Here we calculate the device offsets.
*/
@ -252,7 +243,7 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio)
start_sector + data_offset;
if (unlikely((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bio->bi_bdev->bd_disk->queue))) {
!bdev_max_discard_sectors(bio->bi_bdev))) {
/* Just ignore it */
bio_endio(bio);
} else {

5
drivers/md/md.c
View File

@ -5991,8 +5991,7 @@ int md_run(struct mddev *mddev)
bool nonrot = true;
rdev_for_each(rdev, mddev) {
if (rdev->raid_disk >= 0 &&
!blk_queue_nonrot(bdev_get_queue(rdev->bdev))) {
if (rdev->raid_disk >= 0 && !bdev_nonrot(rdev->bdev)) {
nonrot = false;
break;
}
@ -8585,7 +8584,7 @@ void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
{
struct bio *discard_bio = NULL;
if (__blkdev_issue_discard(rdev->bdev, start, size, GFP_NOIO, 0,
if (__blkdev_issue_discard(rdev->bdev, start, size, GFP_NOIO,
&discard_bio) || !discard_bio)
return;

7
drivers/md/raid0.c
View File

@ -399,7 +399,6 @@ static int raid0_run(struct mddev *mddev)
conf = mddev->private;
if (mddev->queue) {
struct md_rdev *rdev;
bool discard_supported = false;
blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
blk_queue_max_write_zeroes_sectors(mddev->queue, mddev->chunk_sectors);
@ -412,13 +411,7 @@ static int raid0_run(struct mddev *mddev)
rdev_for_each(rdev, mddev) {
disk_stack_limits(mddev->gendisk, rdev->bdev,
rdev->data_offset << 9);
if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
discard_supported = true;
}
if (!discard_supported)
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, mddev->queue);
else
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
}
/* calculate array device size */

30
drivers/md/raid1.c
View File

@ -165,9 +165,10 @@ static void * r1buf_pool_alloc(gfp_t gfp_flags, void *data)
* Allocate bios : 1 for reading, n-1 for writing
*/
for (j = pi->raid_disks ; j-- ; ) {
bio = bio_kmalloc(gfp_flags, RESYNC_PAGES);
bio = bio_kmalloc(RESYNC_PAGES, gfp_flags);
if (!bio)
goto out_free_bio;
bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0);
r1_bio->bios[j] = bio;
}
/*
@ -206,8 +207,10 @@ out_free_pages:
resync_free_pages(&rps[j]);
out_free_bio:
while (++j < pi->raid_disks)
bio_put(r1_bio->bios[j]);
while (++j < pi->raid_disks) {
bio_uninit(r1_bio->bios[j]);
kfree(r1_bio->bios[j]);
}
kfree(rps);
out_free_r1bio:
@ -225,7 +228,8 @@ static void r1buf_pool_free(void *__r1_bio, void *data)
for (i = pi->raid_disks; i--; ) {
rp = get_resync_pages(r1bio->bios[i]);
resync_free_pages(rp);
bio_put(r1bio->bios[i]);
bio_uninit(r1bio->bios[i]);
kfree(r1bio->bios[i]);
}
/* resync pages array stored in the 1st bio's .bi_private */
@ -704,7 +708,7 @@ static int read_balance(struct r1conf *conf, struct r1bio *r1_bio, int *max_sect
/* At least two disks to choose from so failfast is OK */
set_bit(R1BIO_FailFast, &r1_bio->state);
nonrot = blk_queue_nonrot(bdev_get_queue(rdev->bdev));
nonrot = bdev_nonrot(rdev->bdev);
has_nonrot_disk |= nonrot;
pending = atomic_read(&rdev->nr_pending);
dist = abs(this_sector - conf->mirrors[disk].head_position);
@ -802,7 +806,7 @@ static void flush_bio_list(struct r1conf *conf, struct bio *bio)
if (test_bit(Faulty, &rdev->flags)) {
bio_io_error(bio);
} else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bio->bi_bdev->bd_disk->queue)))
!bdev_max_discard_sectors(bio->bi_bdev)))
/* Just ignore it */
bio_endio(bio);
else
@ -1826,8 +1830,6 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev)
break;
}
}
if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev)))
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
print_conf(conf);
return err;
}
@ -3106,7 +3108,6 @@ static int raid1_run(struct mddev *mddev)
int i;
struct md_rdev *rdev;
int ret;
bool discard_supported = false;
if (mddev->level != 1) {
pr_warn("md/raid1:%s: raid level not set to mirroring (%d)\n",
@ -3141,8 +3142,6 @@ static int raid1_run(struct mddev *mddev)
continue;
disk_stack_limits(mddev->gendisk, rdev->bdev,
rdev->data_offset << 9);
if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
discard_supported = true;
}
mddev->degraded = 0;
@ -3179,15 +3178,6 @@ static int raid1_run(struct mddev *mddev)
md_set_array_sectors(mddev, raid1_size(mddev, 0, 0));
if (mddev->queue) {
if (discard_supported)
blk_queue_flag_set(QUEUE_FLAG_DISCARD,
mddev->queue);
else
blk_queue_flag_clear(QUEUE_FLAG_DISCARD,
mddev->queue);
}
ret = md_integrity_register(mddev);
if (ret) {
md_unregister_thread(&mddev->thread);

41
drivers/md/raid10.c
View File

@ -145,15 +145,17 @@ static void * r10buf_pool_alloc(gfp_t gfp_flags, void *data)
* Allocate bios.
*/
for (j = nalloc ; j-- ; ) {
bio = bio_kmalloc(gfp_flags, RESYNC_PAGES);
bio = bio_kmalloc(RESYNC_PAGES, gfp_flags);
if (!bio)
goto out_free_bio;
bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0);
r10_bio->devs[j].bio = bio;
if (!conf->have_replacement)
continue;
bio = bio_kmalloc(gfp_flags, RESYNC_PAGES);
bio = bio_kmalloc(RESYNC_PAGES, gfp_flags);
if (!bio)
goto out_free_bio;
bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0);
r10_bio->devs[j].repl_bio = bio;
}
/*
@ -197,9 +199,11 @@ out_free_pages:
out_free_bio:
for ( ; j < nalloc; j++) {
if (r10_bio->devs[j].bio)
bio_put(r10_bio->devs[j].bio);
bio_uninit(r10_bio->devs[j].bio);
kfree(r10_bio->devs[j].bio);
if (r10_bio->devs[j].repl_bio)
bio_put(r10_bio->devs[j].repl_bio);
bio_uninit(r10_bio->devs[j].repl_bio);
kfree(r10_bio->devs[j].repl_bio);
}
kfree(rps);
out_free_r10bio:
@ -220,12 +224,15 @@ static void r10buf_pool_free(void *__r10_bio, void *data)
if (bio) {
rp = get_resync_pages(bio);
resync_free_pages(rp);
bio_put(bio);
bio_uninit(bio);
kfree(bio);
}
bio = r10bio->devs[j].repl_bio;
if (bio)
bio_put(bio);
if (bio) {
bio_uninit(bio);
kfree(bio);
}
}
/* resync pages array stored in the 1st bio's .bi_private */
@ -796,7 +803,7 @@ static struct md_rdev *read_balance(struct r10conf *conf,
if (!do_balance)
break;
nonrot = blk_queue_nonrot(bdev_get_queue(rdev->bdev));
nonrot = bdev_nonrot(rdev->bdev);
has_nonrot_disk |= nonrot;
pending = atomic_read(&rdev->nr_pending);
if (min_pending > pending && nonrot) {
@ -888,7 +895,7 @@ static void flush_pending_writes(struct r10conf *conf)
if (test_bit(Faulty, &rdev->flags)) {
bio_io_error(bio);
} else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bio->bi_bdev->bd_disk->queue)))
!bdev_max_discard_sectors(bio->bi_bdev)))
/* Just ignore it */
bio_endio(bio);
else
@ -1083,7 +1090,7 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule)
if (test_bit(Faulty, &rdev->flags)) {
bio_io_error(bio);
} else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bio->bi_bdev->bd_disk->queue)))
!bdev_max_discard_sectors(bio->bi_bdev)))
/* Just ignore it */
bio_endio(bio);
else
@ -2144,8 +2151,6 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
rcu_assign_pointer(p->rdev, rdev);
break;
}
if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev)))
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
print_conf(conf);
return err;
@ -4069,7 +4074,6 @@ static int raid10_run(struct mddev *mddev)
sector_t size;
sector_t min_offset_diff = 0;
int first = 1;
bool discard_supported = false;
if (mddev_init_writes_pending(mddev) < 0)
return -ENOMEM;
@ -4140,20 +4144,9 @@ static int raid10_run(struct mddev *mddev)
rdev->data_offset << 9);
disk->head_position = 0;
if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
discard_supported = true;
first = 0;
}
if (mddev->queue) {
if (discard_supported)
blk_queue_flag_set(QUEUE_FLAG_DISCARD,
mddev->queue);
else
blk_queue_flag_clear(QUEUE_FLAG_DISCARD,
mddev->queue);
}
/* need to check that every block has at least one working mirror */
if (!enough(conf, -1)) {
pr_err("md/raid10:%s: not enough operational mirrors.\n",

8
drivers/md/raid5-cache.c
View File

@ -1318,7 +1318,7 @@ static void r5l_write_super_and_discard_space(struct r5l_log *log,
r5l_write_super(log, end);
if (!blk_queue_discard(bdev_get_queue(bdev)))
if (!bdev_max_discard_sectors(bdev))
return;
mddev = log->rdev->mddev;
@ -1344,14 +1344,14 @@ static void r5l_write_super_and_discard_space(struct r5l_log *log,
if (log->last_checkpoint < end) {
blkdev_issue_discard(bdev,
log->last_checkpoint + log->rdev->data_offset,
end - log->last_checkpoint, GFP_NOIO, 0);
end - log->last_checkpoint, GFP_NOIO);
} else {
blkdev_issue_discard(bdev,
log->last_checkpoint + log->rdev->data_offset,
log->device_size - log->last_checkpoint,
GFP_NOIO, 0);
GFP_NOIO);
blkdev_issue_discard(bdev, log->rdev->data_offset, end,
GFP_NOIO, 0);
GFP_NOIO);
}
}

14
drivers/md/raid5.c
View File

@ -7242,7 +7242,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
rdev_for_each(rdev, mddev) {
if (test_bit(Journal, &rdev->flags))
continue;
if (blk_queue_nonrot(bdev_get_queue(rdev->bdev))) {
if (bdev_nonrot(rdev->bdev)) {
conf->batch_bio_dispatch = false;
break;
}
@ -7776,14 +7776,10 @@ static int raid5_run(struct mddev *mddev)
* A better idea might be to turn DISCARD into WRITE_ZEROES
* requests, as that is required to be safe.
*/
if (devices_handle_discard_safely &&
mddev->queue->limits.max_discard_sectors >= (stripe >> 9) &&
mddev->queue->limits.discard_granularity >= stripe)
blk_queue_flag_set(QUEUE_FLAG_DISCARD,
mddev->queue);
else
blk_queue_flag_clear(QUEUE_FLAG_DISCARD,
mddev->queue);
if (!devices_handle_discard_safely ||
mddev->queue->limits.max_discard_sectors < (stripe >> 9) ||
mddev->queue->limits.discard_granularity < stripe)
blk_queue_max_discard_sectors(mddev->queue, 0);
blk_queue_max_hw_sectors(mddev->queue, UINT_MAX);
}

3
drivers/mmc/core/queue.c
View File

@ -183,14 +183,13 @@ static void mmc_queue_setup_discard(struct request_queue *q,
if (!max_discard)
return;
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
blk_queue_max_discard_sectors(q, max_discard);
q->limits.discard_granularity = card->pref_erase << 9;
/* granularity must not be greater than max. discard */
if (card->pref_erase > max_discard)
q->limits.discard_granularity = SECTOR_SIZE;
if (mmc_can_secure_erase_trim(card))
blk_queue_flag_set(QUEUE_FLAG_SECERASE, q);
blk_queue_max_secure_erase_sectors(q, max_discard);
}
static unsigned short mmc_get_max_segments(struct mmc_host *host)

1
drivers/mtd/mtd_blkdevs.c
View File

@ -377,7 +377,6 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, new->rq);
if (tr->discard) {
blk_queue_flag_set(QUEUE_FLAG_DISCARD, new->rq);
blk_queue_max_discard_sectors(new->rq, UINT_MAX);
new->rq->limits.discard_granularity = tr->blksize;
}

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

@ -1621,7 +1621,7 @@ static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
u32 size = queue_logical_block_size(queue);
if (ctrl->max_discard_sectors == 0) {
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, queue);
blk_queue_max_discard_sectors(queue, 0);
return;
}
@ -1632,7 +1632,7 @@ static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
queue->limits.discard_granularity = size;
/* If discard is already enabled, don't reset queue limits */
if (blk_queue_flag_test_and_set(QUEUE_FLAG_DISCARD, queue))
if (queue->limits.max_discard_sectors)
return;
blk_queue_max_discard_sectors(queue, ctrl->max_discard_sectors);

26
drivers/nvme/host/fc.c
View File

@ -3831,6 +3831,9 @@ process_local_list:
return count;
}
static DEVICE_ATTR(nvme_discovery, 0200, NULL, nvme_fc_nvme_discovery_store);
#ifdef CONFIG_BLK_CGROUP_FC_APPID
/* Parse the cgroup id from a buf and return the length of cgrpid */
static int fc_parse_cgrpid(const char *buf, u64 *id)
{
@ -3854,12 +3857,10 @@ static int fc_parse_cgrpid(const char *buf, u64 *id)
}
/*
* fc_update_appid: Parse and update the appid in the blkcg associated with
* cgroupid.
* @buf: buf contains both cgrpid and appid info
* @count: size of the buffer
* Parse and update the appid in the blkcg associated with the cgroupid.
*/
static int fc_update_appid(const char *buf, size_t count)
static ssize_t fc_appid_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
u64 cgrp_id;
int appid_len = 0;
@ -3887,23 +3888,14 @@ static int fc_update_appid(const char *buf, size_t count)
return ret;
return count;
}
static ssize_t fc_appid_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int ret = 0;
ret = fc_update_appid(buf, count);
if (ret < 0)
return -EINVAL;
return count;
}
static DEVICE_ATTR(nvme_discovery, 0200, NULL, nvme_fc_nvme_discovery_store);
static DEVICE_ATTR(appid_store, 0200, NULL, fc_appid_store);
#endif /* CONFIG_BLK_CGROUP_FC_APPID */
static struct attribute *nvme_fc_attrs[] = {
&dev_attr_nvme_discovery.attr,
#ifdef CONFIG_BLK_CGROUP_FC_APPID
&dev_attr_appid_store.attr,
#endif
NULL
};

2
drivers/nvme/target/io-cmd-bdev.c
View File

@ -360,7 +360,7 @@ static u16 nvmet_bdev_discard_range(struct nvmet_req *req,
ret = __blkdev_issue_discard(ns->bdev,
nvmet_lba_to_sect(ns, range->slba),
le32_to_cpu(range->nlb) << (ns->blksize_shift - 9),
GFP_KERNEL, 0, bio);
GFP_KERNEL, bio);
if (ret && ret != -EOPNOTSUPP) {
req->error_slba = le64_to_cpu(range->slba);
return errno_to_nvme_status(req, ret);

3
drivers/nvme/target/zns.c
View File

@ -34,8 +34,7 @@ static int validate_conv_zones_cb(struct blk_zone *z,
bool nvmet_bdev_zns_enable(struct nvmet_ns *ns)
{
struct request_queue *q = ns->bdev->bd_disk->queue;
u8 zasl = nvmet_zasl(queue_max_zone_append_sectors(q));
u8 zasl = nvmet_zasl(bdev_max_zone_append_sectors(ns->bdev));
struct gendisk *bd_disk = ns->bdev->bd_disk;
int ret;

1
drivers/s390/block/dasd_fba.c
View File

@ -791,7 +791,6 @@ static void dasd_fba_setup_blk_queue(struct dasd_block *block)
blk_queue_max_discard_sectors(q, max_discard_sectors);
blk_queue_max_write_zeroes_sectors(q, max_discard_sectors);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
}
static int dasd_fba_pe_handler(struct dasd_device *device,

4
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -5528,7 +5528,9 @@ static char *lpfc_is_command_vm_io(struct scsi_cmnd *cmd)
{
struct bio *bio = scsi_cmd_to_rq(cmd)->bio;
return bio ? blkcg_get_fc_appid(bio) : NULL;
if (!IS_ENABLED(CONFIG_BLK_CGROUP_FC_APPID) || !bio)
return NULL;
return blkcg_get_fc_appid(bio);
}
/**

2
drivers/scsi/sd.c
View File

@ -797,7 +797,6 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode)
case SD_LBP_FULL:
case SD_LBP_DISABLE:
blk_queue_max_discard_sectors(q, 0);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
return;
case SD_LBP_UNMAP:
@ -830,7 +829,6 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode)
}
blk_queue_max_discard_sectors(q, max_blocks * (logical_block_size >> 9));
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
}
static blk_status_t sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)

20
drivers/target/target_core_device.c
View File

@ -829,28 +829,26 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
}
/*
* Check if the underlying struct block_device request_queue supports
* the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM
* in ATA and we need to set TPE=1
* Check if the underlying struct block_device supports discard and if yes
* configure the UNMAP parameters.
*/
bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
struct request_queue *q)
struct block_device *bdev)
{
int block_size = queue_logical_block_size(q);
int block_size = bdev_logical_block_size(bdev);
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(bdev))
return false;
attrib->max_unmap_lba_count =
q->limits.max_discard_sectors >> (ilog2(block_size) - 9);
bdev_max_discard_sectors(bdev) >> (ilog2(block_size) - 9);
/*
* Currently hardcoded to 1 in Linux/SCSI code..
*/
attrib->max_unmap_block_desc_count = 1;
attrib->unmap_granularity = q->limits.discard_granularity / block_size;
attrib->unmap_granularity_alignment = q->limits.discard_alignment /
block_size;
attrib->unmap_zeroes_data = !!(q->limits.max_write_zeroes_sectors);
attrib->unmap_granularity = bdev_discard_granularity(bdev) / block_size;
attrib->unmap_granularity_alignment =
bdev_discard_alignment(bdev) / block_size;
return true;
}
EXPORT_SYMBOL(target_configure_unmap_from_queue);

10
drivers/target/target_core_file.c
View File

@ -134,10 +134,10 @@ static int fd_configure_device(struct se_device *dev)
*/
inode = file->f_mapping->host;
if (S_ISBLK(inode->i_mode)) {
struct request_queue *q = bdev_get_queue(I_BDEV(inode));
struct block_device *bdev = I_BDEV(inode);
unsigned long long dev_size;
fd_dev->fd_block_size = bdev_logical_block_size(I_BDEV(inode));
fd_dev->fd_block_size = bdev_logical_block_size(bdev);
/*
* Determine the number of bytes from i_size_read() minus
* one (1) logical sector from underlying struct block_device
@ -150,7 +150,7 @@ static int fd_configure_device(struct se_device *dev)
dev_size, div_u64(dev_size, fd_dev->fd_block_size),
fd_dev->fd_block_size);
if (target_configure_unmap_from_queue(&dev->dev_attrib, q))
if (target_configure_unmap_from_queue(&dev->dev_attrib, bdev))
pr_debug("IFILE: BLOCK Discard support available,"
" disabled by default\n");
/*
@ -159,7 +159,7 @@ static int fd_configure_device(struct se_device *dev)
*/
dev->dev_attrib.max_write_same_len = 0xFFFF;
if (blk_queue_nonrot(q))
if (bdev_nonrot(bdev))
dev->dev_attrib.is_nonrot = 1;
} else {
if (!(fd_dev->fbd_flags & FBDF_HAS_SIZE)) {
@ -558,7 +558,7 @@ fd_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb)
ret = blkdev_issue_discard(bdev,
target_to_linux_sector(dev, lba),
target_to_linux_sector(dev, nolb),
GFP_KERNEL, 0);
GFP_KERNEL);
if (ret < 0) {
pr_warn("FILEIO: blkdev_issue_discard() failed: %d\n",
ret);

17
drivers/target/target_core_iblock.c
View File

@ -119,7 +119,7 @@ static int iblock_configure_device(struct se_device *dev)
dev->dev_attrib.hw_max_sectors = queue_max_hw_sectors(q);
dev->dev_attrib.hw_queue_depth = q->nr_requests;
if (target_configure_unmap_from_queue(&dev->dev_attrib, q))
if (target_configure_unmap_from_queue(&dev->dev_attrib, bd))
pr_debug("IBLOCK: BLOCK Discard support available,"
" disabled by default\n");
@ -133,7 +133,7 @@ static int iblock_configure_device(struct se_device *dev)
else
dev->dev_attrib.max_write_same_len = 0xFFFF;
if (blk_queue_nonrot(q))
if (bdev_nonrot(bd))
dev->dev_attrib.is_nonrot = 1;
bi = bdev_get_integrity(bd);
@ -434,7 +434,7 @@ iblock_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb)
ret = blkdev_issue_discard(bdev,
target_to_linux_sector(dev, lba),
target_to_linux_sector(dev, nolb),
GFP_KERNEL, 0);
GFP_KERNEL);
if (ret < 0) {
pr_err("blkdev_issue_discard() failed: %d\n", ret);
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
@ -727,17 +727,16 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
if (data_direction == DMA_TO_DEVICE) {
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct request_queue *q = bdev_get_queue(ib_dev->ibd_bd);
/*
* Force writethrough using REQ_FUA if a volatile write cache
* is not enabled, or if initiator set the Force Unit Access bit.
*/
opf = REQ_OP_WRITE;
miter_dir = SG_MITER_TO_SG;
if (test_bit(QUEUE_FLAG_FUA, &q->queue_flags)) {
if (bdev_fua(ib_dev->ibd_bd)) {
if (cmd->se_cmd_flags & SCF_FUA)
opf |= REQ_FUA;
else if (!test_bit(QUEUE_FLAG_WC, &q->queue_flags))
else if (!bdev_write_cache(ib_dev->ibd_bd))
opf |= REQ_FUA;
}
} else {
@ -886,11 +885,7 @@ iblock_parse_cdb(struct se_cmd *cmd)
static bool iblock_get_write_cache(struct se_device *dev)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct block_device *bd = ib_dev->ibd_bd;
struct request_queue *q = bdev_get_queue(bd);
return test_bit(QUEUE_FLAG_WC, &q->queue_flags);
return bdev_write_cache(IBLOCK_DEV(dev)->ibd_bd);
}
static const struct target_backend_ops iblock_ops = {

36
drivers/target/target_core_pscsi.c
View File

@ -818,24 +818,8 @@ static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b)
static void pscsi_bi_endio(struct bio *bio)
{
bio_put(bio);
}
static inline struct bio *pscsi_get_bio(int nr_vecs)
{
struct bio *bio;
/*
* Use bio_malloc() following the comment in for bio -> struct request
* in block/blk-core.c:blk_make_request()
*/
bio = bio_kmalloc(GFP_KERNEL, nr_vecs);
if (!bio) {
pr_err("PSCSI: bio_kmalloc() failed\n");
return NULL;
}
bio->bi_end_io = pscsi_bi_endio;
return bio;
bio_uninit(bio);
kfree(bio);
}
static sense_reason_t
@ -878,15 +862,12 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
if (!bio) {
new_bio:
nr_vecs = bio_max_segs(nr_pages);
/*
* Calls bio_kmalloc() and sets bio->bi_end_io()
*/
bio = pscsi_get_bio(nr_vecs);
bio = bio_kmalloc(nr_vecs, GFP_KERNEL);
if (!bio)
goto fail;
if (rw)
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
bio_init(bio, NULL, bio->bi_inline_vecs, nr_vecs,
rw ? REQ_OP_WRITE : REQ_OP_READ);
bio->bi_end_io = pscsi_bi_endio;
pr_debug("PSCSI: Allocated bio: %p,"
" dir: %s nr_vecs: %d\n", bio,
@ -912,11 +893,6 @@ new_bio:
goto fail;
}
/*
* Clear the pointer so that another bio will
* be allocated with pscsi_get_bio() above.
*/
bio = NULL;
goto new_bio;
}

11
fs/btrfs/disk-io.c
View File

@ -4238,6 +4238,7 @@ static int wait_dev_supers(struct btrfs_device *device, int max_mirrors)
*/
static void btrfs_end_empty_barrier(struct bio *bio)
{
bio_uninit(bio);
complete(bio->bi_private);
}
@ -4247,7 +4248,7 @@ static void btrfs_end_empty_barrier(struct bio *bio)
*/
static void write_dev_flush(struct btrfs_device *device)
{
struct bio *bio = device->flush_bio;
struct bio *bio = &device->flush_bio;
#ifndef CONFIG_BTRFS_FS_CHECK_INTEGRITY
/*
@ -4260,12 +4261,12 @@ static void write_dev_flush(struct btrfs_device *device)
* of simplicity, since this is a debug tool and not meant for use in
* non-debug builds.
*/
struct request_queue *q = bdev_get_queue(device->bdev);
if (!test_bit(QUEUE_FLAG_WC, &q->queue_flags))
if (!bdev_write_cache(device->bdev))
return;
#endif
bio_reset(bio, device->bdev, REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH);
bio_init(bio, device->bdev, NULL, 0,
REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH);
bio->bi_end_io = btrfs_end_empty_barrier;
init_completion(&device->flush_wait);
bio->bi_private = &device->flush_wait;
@ -4279,7 +4280,7 @@ static void write_dev_flush(struct btrfs_device *device)
*/
static blk_status_t wait_dev_flush(struct btrfs_device *device)
{
struct bio *bio = device->flush_bio;
struct bio *bio = &device->flush_bio;
if (!test_bit(BTRFS_DEV_STATE_FLUSH_SENT, &device->dev_state))
return BLK_STS_OK;

8
fs/btrfs/extent-tree.c
View File

@ -1239,7 +1239,7 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len,
if (size) {
ret = blkdev_issue_discard(bdev, start >> 9, size >> 9,
GFP_NOFS, 0);
GFP_NOFS);
if (!ret)
*discarded_bytes += size;
else if (ret != -EOPNOTSUPP)
@ -1256,7 +1256,7 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len,
if (bytes_left) {
ret = blkdev_issue_discard(bdev, start >> 9, bytes_left >> 9,
GFP_NOFS, 0);
GFP_NOFS);
if (!ret)
*discarded_bytes += bytes_left;
}
@ -1291,7 +1291,7 @@ static int do_discard_extent(struct btrfs_io_stripe *stripe, u64 *bytes)
ret = btrfs_reset_device_zone(dev_replace->tgtdev, phys, len,
&discarded);
discarded += src_disc;
} else if (blk_queue_discard(bdev_get_queue(stripe->dev->bdev))) {
} else if (bdev_max_discard_sectors(stripe->dev->bdev)) {
ret = btrfs_issue_discard(dev->bdev, phys, len, &discarded);
} else {
ret = 0;
@ -5987,7 +5987,7 @@ static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed)
*trimmed = 0;
/* Discard not supported = nothing to do. */
if (!blk_queue_discard(bdev_get_queue(device->bdev)))
if (!bdev_max_discard_sectors(device->bdev))
return 0;
/* Not writable = nothing to do. */

12
fs/btrfs/ioctl.c
View File

@ -468,7 +468,6 @@ static noinline int btrfs_ioctl_fitrim(struct btrfs_fs_info *fs_info,
void __user *arg)
{
struct btrfs_device *device;
struct request_queue *q;
struct fstrim_range range;
u64 minlen = ULLONG_MAX;
u64 num_devices = 0;
@ -498,14 +497,11 @@ static noinline int btrfs_ioctl_fitrim(struct btrfs_fs_info *fs_info,
rcu_read_lock();
list_for_each_entry_rcu(device, &fs_info->fs_devices->devices,
dev_list) {
if (!device->bdev)
if (!device->bdev || !bdev_max_discard_sectors(device->bdev))
continue;
q = bdev_get_queue(device->bdev);
if (blk_queue_discard(q)) {
num_devices++;
minlen = min_t(u64, q->limits.discard_granularity,
minlen);
}
num_devices++;
minlen = min_t(u64, bdev_discard_granularity(device->bdev),
minlen);
}
rcu_read_unlock();

15
fs/btrfs/volumes.c
View File

@ -405,7 +405,6 @@ void btrfs_free_device(struct btrfs_device *device)
WARN_ON(!list_empty(&device->post_commit_list));
rcu_string_free(device->name);
extent_io_tree_release(&device->alloc_state);
bio_put(device->flush_bio);
btrfs_destroy_dev_zone_info(device);
kfree(device);
}
@ -643,7 +642,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
}
if (!blk_queue_nonrot(bdev_get_queue(bdev)))
if (!bdev_nonrot(bdev))
fs_devices->rotating = true;
device->bdev = bdev;
@ -2706,7 +2705,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
atomic64_add(device->total_bytes, &fs_info->free_chunk_space);
if (!blk_queue_nonrot(bdev_get_queue(bdev)))
if (!bdev_nonrot(bdev))
fs_devices->rotating = true;
orig_super_total_bytes = btrfs_super_total_bytes(fs_info->super_copy);
@ -6949,16 +6948,6 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
if (!dev)
return ERR_PTR(-ENOMEM);
/*
* Preallocate a bio that's always going to be used for flushing device
* barriers and matches the device lifespan
*/
dev->flush_bio = bio_kmalloc(GFP_KERNEL, 0);
if (!dev->flush_bio) {
kfree(dev);
return ERR_PTR(-ENOMEM);
}
INIT_LIST_HEAD(&dev->dev_list);
INIT_LIST_HEAD(&dev->dev_alloc_list);
INIT_LIST_HEAD(&dev->post_commit_list);

4
fs/btrfs/volumes.h
View File

@ -121,8 +121,8 @@ struct btrfs_device {
/* bytes used on the current transaction */
u64 commit_bytes_used;
/* for sending down flush barriers */
struct bio *flush_bio;
/* Bio used for flushing device barriers */
struct bio flush_bio;
struct completion flush_wait;
/* per-device scrub information */

3
fs/btrfs/zoned.c
View File

@ -350,7 +350,6 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache)
struct btrfs_fs_info *fs_info = device->fs_info;
struct btrfs_zoned_device_info *zone_info = NULL;
struct block_device *bdev = device->bdev;
struct request_queue *queue = bdev_get_queue(bdev);
unsigned int max_active_zones;
unsigned int nactive;
sector_t nr_sectors;
@ -410,7 +409,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache)
if (!IS_ALIGNED(nr_sectors, zone_sectors))
zone_info->nr_zones++;
max_active_zones = queue_max_active_zones(queue);
max_active_zones = bdev_max_active_zones(bdev);
if (max_active_zones && max_active_zones < BTRFS_MIN_ACTIVE_ZONES) {
btrfs_err_in_rcu(fs_info,
"zoned: %s: max active zones %u is too small, need at least %u active zones",

32
fs/direct-io.c
View File

@ -1115,11 +1115,10 @@ static inline int drop_refcount(struct dio *dio)
* individual fields and will generate much worse code. This is important
* for the whole file.
*/
static inline ssize_t
do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, struct iov_iter *iter,
get_block_t get_block, dio_iodone_t end_io,
dio_submit_t submit_io, int flags)
ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, struct iov_iter *iter,
get_block_t get_block, dio_iodone_t end_io,
dio_submit_t submit_io, int flags)
{
unsigned i_blkbits = READ_ONCE(inode->i_blkbits);
unsigned blkbits = i_blkbits;
@ -1334,29 +1333,6 @@ fail_dio:
kmem_cache_free(dio_cache, dio);
return retval;
}
ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, struct iov_iter *iter,
get_block_t get_block,
dio_iodone_t end_io, dio_submit_t submit_io,
int flags)
{
/*
* The block device state is needed in the end to finally
* submit everything. Since it's likely to be cache cold
* prefetch it here as first thing to hide some of the
* latency.
*
* Attempt to prefetch the pieces we likely need later.
*/
prefetch(&bdev->bd_disk->part_tbl);
prefetch(bdev->bd_disk->queue);
prefetch((char *)bdev->bd_disk->queue + SMP_CACHE_BYTES);
return do_blockdev_direct_IO(iocb, inode, bdev, iter, get_block,
end_io, submit_io, flags);
}
EXPORT_SYMBOL(__blockdev_direct_IO);
static __init int dio_init(void)

5
fs/exfat/file.c
View File

@ -351,21 +351,20 @@ out:
static int exfat_ioctl_fitrim(struct inode *inode, unsigned long arg)
{
struct request_queue *q = bdev_get_queue(inode->i_sb->s_bdev);
struct fstrim_range range;
int ret = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(inode->i_sb->s_bdev))
return -EOPNOTSUPP;
if (copy_from_user(&range, (struct fstrim_range __user *)arg, sizeof(range)))
return -EFAULT;
range.minlen = max_t(unsigned int, range.minlen,
q->limits.discard_granularity);
bdev_discard_granularity(inode->i_sb->s_bdev));
ret = exfat_trim_fs(inode, &range);
if (ret < 0)

10
fs/exfat/super.c
View File

@ -627,13 +627,9 @@ static int exfat_fill_super(struct super_block *sb, struct fs_context *fc)
if (opts->allow_utime == (unsigned short)-1)
opts->allow_utime = ~opts->fs_dmask & 0022;
if (opts->discard) {
struct request_queue *q = bdev_get_queue(sb->s_bdev);
if (!blk_queue_discard(q)) {
exfat_warn(sb, "mounting with \"discard\" option, but the device does not support discard");
opts->discard = 0;
}
if (opts->discard && !bdev_max_discard_sectors(sb->s_bdev)) {
exfat_warn(sb, "mounting with \"discard\" option, but the device does not support discard");
opts->discard = 0;
}
sb->s_flags |= SB_NODIRATIME;

10
fs/ext4/ioctl.c
View File

@ -1044,7 +1044,6 @@ static int ext4_ioctl_checkpoint(struct file *filp, unsigned long arg)
__u32 flags = 0;
unsigned int flush_flags = 0;
struct super_block *sb = file_inode(filp)->i_sb;
struct request_queue *q;
if (copy_from_user(&flags, (__u32 __user *)arg,
sizeof(__u32)))
@ -1065,10 +1064,8 @@ static int ext4_ioctl_checkpoint(struct file *filp, unsigned long arg)
if (flags & ~EXT4_IOC_CHECKPOINT_FLAG_VALID)
return -EINVAL;
q = bdev_get_queue(EXT4_SB(sb)->s_journal->j_dev);
if (!q)
return -ENXIO;
if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && !blk_queue_discard(q))
if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) &&
!bdev_max_discard_sectors(EXT4_SB(sb)->s_journal->j_dev))
return -EOPNOTSUPP;
if (flags & EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN)
@ -1393,14 +1390,13 @@ resizefs_out:
case FITRIM:
{
struct request_queue *q = bdev_get_queue(sb->s_bdev);
struct fstrim_range range;
int ret = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(sb->s_bdev))
return -EOPNOTSUPP;
/*

10
fs/ext4/mballoc.c
View File

@ -3498,7 +3498,7 @@ int ext4_mb_init(struct super_block *sb)
spin_lock_init(&lg->lg_prealloc_lock);
}
if (blk_queue_nonrot(bdev_get_queue(sb->s_bdev)))
if (bdev_nonrot(sb->s_bdev))
sbi->s_mb_max_linear_groups = 0;
else
sbi->s_mb_max_linear_groups = MB_DEFAULT_LINEAR_LIMIT;
@ -3629,7 +3629,7 @@ static inline int ext4_issue_discard(struct super_block *sb,
return __blkdev_issue_discard(sb->s_bdev,
(sector_t)discard_block << (sb->s_blocksize_bits - 9),
(sector_t)count << (sb->s_blocksize_bits - 9),
GFP_NOFS, 0, biop);
GFP_NOFS, biop);
} else
return sb_issue_discard(sb, discard_block, count, GFP_NOFS, 0);
}
@ -6455,7 +6455,7 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
*/
int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
{
struct request_queue *q = bdev_get_queue(sb->s_bdev);
unsigned int discard_granularity = bdev_discard_granularity(sb->s_bdev);
struct ext4_group_info *grp;
ext4_group_t group, first_group, last_group;
ext4_grpblk_t cnt = 0, first_cluster, last_cluster;
@ -6475,9 +6475,9 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
range->len < sb->s_blocksize)
return -EINVAL;
/* No point to try to trim less than discard granularity */
if (range->minlen < q->limits.discard_granularity) {
if (range->minlen < discard_granularity) {
minlen = EXT4_NUM_B2C(EXT4_SB(sb),
q->limits.discard_granularity >> sb->s_blocksize_bits);
discard_granularity >> sb->s_blocksize_bits);
if (minlen > EXT4_CLUSTERS_PER_GROUP(sb))
goto out;
}

10
fs/ext4/super.c
View File

@ -5474,13 +5474,9 @@ no_journal:
goto failed_mount9;
}
if (test_opt(sb, DISCARD)) {
struct request_queue *q = bdev_get_queue(sb->s_bdev);
if (!blk_queue_discard(q))
ext4_msg(sb, KERN_WARNING,
"mounting with \"discard\" option, but "
"the device does not support discard");
}
if (test_opt(sb, DISCARD) && !bdev_max_discard_sectors(sb->s_bdev))
ext4_msg(sb, KERN_WARNING,
"mounting with \"discard\" option, but the device does not support discard");
if (es->s_error_count)
mod_timer(&sbi->s_err_report, jiffies + 300*HZ); /* 5 minutes */

3
fs/f2fs/f2fs.h
View File

@ -4372,8 +4372,7 @@ static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
{
return blk_queue_discard(bdev_get_queue(bdev)) ||
bdev_is_zoned(bdev);
return bdev_max_discard_sectors(bdev) || bdev_is_zoned(bdev);
}
static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)

19
fs/f2fs/file.c
View File

@ -2285,7 +2285,6 @@ static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
struct super_block *sb = inode->i_sb;
struct request_queue *q = bdev_get_queue(sb->s_bdev);
struct fstrim_range range;
int ret;
@ -2304,7 +2303,7 @@ static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
return ret;
range.minlen = max((unsigned int)range.minlen,
q->limits.discard_granularity);
bdev_discard_granularity(sb->s_bdev));
ret = f2fs_trim_fs(F2FS_SB(sb), &range);
mnt_drop_write_file(filp);
if (ret < 0)
@ -3686,18 +3685,18 @@ out:
static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
pgoff_t off, block_t block, block_t len, u32 flags)
{
struct request_queue *q = bdev_get_queue(bdev);
sector_t sector = SECTOR_FROM_BLOCK(block);
sector_t nr_sects = SECTOR_FROM_BLOCK(len);
int ret = 0;
if (!q)
return -ENXIO;
if (flags & F2FS_TRIM_FILE_DISCARD)
ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
blk_queue_secure_erase(q) ?
BLKDEV_DISCARD_SECURE : 0);
if (flags & F2FS_TRIM_FILE_DISCARD) {
if (bdev_max_secure_erase_sectors(bdev))
ret = blkdev_issue_secure_erase(bdev, sector, nr_sects,
GFP_NOFS);
else
ret = blkdev_issue_discard(bdev, sector, nr_sects,
GFP_NOFS);
}
if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
if (IS_ENCRYPTED(inode))

8
fs/f2fs/segment.c
View File

@ -1196,9 +1196,8 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
unsigned int *issued)
{
struct block_device *bdev = dc->bdev;
struct request_queue *q = bdev_get_queue(bdev);
unsigned int max_discard_blocks =
SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
SECTOR_TO_BLOCK(bdev_max_discard_sectors(bdev));
struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
&(dcc->fstrim_list) : &(dcc->wait_list);
@ -1245,7 +1244,7 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
err = __blkdev_issue_discard(bdev,
SECTOR_FROM_BLOCK(start),
SECTOR_FROM_BLOCK(len),
GFP_NOFS, 0, &bio);
GFP_NOFS, &bio);
submit:
if (err) {
spin_lock_irqsave(&dc->lock, flags);
@ -1375,9 +1374,8 @@ static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
struct discard_cmd *dc;
struct discard_info di = {0};
struct rb_node **insert_p = NULL, *insert_parent = NULL;
struct request_queue *q = bdev_get_queue(bdev);
unsigned int max_discard_blocks =
SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
SECTOR_TO_BLOCK(bdev_max_discard_sectors(bdev));
block_t end = lstart + len;
dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,

5
fs/fat/file.c
View File

@ -127,13 +127,12 @@ static int fat_ioctl_fitrim(struct inode *inode, unsigned long arg)
struct super_block *sb = inode->i_sb;
struct fstrim_range __user *user_range;
struct fstrim_range range;
struct request_queue *q = bdev_get_queue(sb->s_bdev);
int err;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(sb->s_bdev))
return -EOPNOTSUPP;
user_range = (struct fstrim_range __user *)arg;
@ -141,7 +140,7 @@ static int fat_ioctl_fitrim(struct inode *inode, unsigned long arg)
return -EFAULT;
range.minlen = max_t(unsigned int, range.minlen,
q->limits.discard_granularity);
bdev_discard_granularity(sb->s_bdev));
err = fat_trim_fs(inode, &range);
if (err < 0)

10
fs/fat/inode.c
View File

@ -1872,13 +1872,9 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,
goto out_fail;
}
if (sbi->options.discard) {
struct request_queue *q = bdev_get_queue(sb->s_bdev);
if (!blk_queue_discard(q))
fat_msg(sb, KERN_WARNING,
"mounting with \"discard\" option, but "
"the device does not support discard");
}
if (sbi->options.discard && !bdev_max_discard_sectors(sb->s_bdev))
fat_msg(sb, KERN_WARNING,
"mounting with \"discard\" option, but the device does not support discard");
fat_set_state(sb, 1, 0);
return 0;

7
fs/gfs2/rgrp.c
View File

@ -1386,7 +1386,7 @@ int gfs2_fitrim(struct file *filp, void __user *argp)
{
struct inode *inode = file_inode(filp);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct request_queue *q = bdev_get_queue(sdp->sd_vfs->s_bdev);
struct block_device *bdev = sdp->sd_vfs->s_bdev;
struct buffer_head *bh;
struct gfs2_rgrpd *rgd;
struct gfs2_rgrpd *rgd_end;
@ -1405,7 +1405,7 @@ int gfs2_fitrim(struct file *filp, void __user *argp)
if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))
return -EROFS;
if (!blk_queue_discard(q))
if (!bdev_max_discard_sectors(bdev))
return -EOPNOTSUPP;
if (copy_from_user(&r, argp, sizeof(r)))
@ -1418,8 +1418,7 @@ int gfs2_fitrim(struct file *filp, void __user *argp)
start = r.start >> bs_shift;
end = start + (r.len >> bs_shift);
minlen = max_t(u64, r.minlen, sdp->sd_sb.sb_bsize);
minlen = max_t(u64, minlen,
q->limits.discard_granularity) >> bs_shift;
minlen = max_t(u64, minlen, bdev_discard_granularity(bdev)) >> bs_shift;
if (end <= start || minlen > sdp->sd_max_rg_data)
return -EINVAL;

10
fs/iomap/direct-io.c
View File

@ -56,7 +56,8 @@ static void iomap_dio_submit_bio(const struct iomap_iter *iter,
{
atomic_inc(&dio->ref);
if (dio->iocb->ki_flags & IOCB_HIPRI) {
/* Sync dio can't be polled reliably */
if ((dio->iocb->ki_flags & IOCB_HIPRI) && !is_sync_kiocb(dio->iocb)) {
bio_set_polled(bio, dio->iocb);
dio->submit.poll_bio = bio;
}
@ -265,8 +266,7 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter,
* cache flushes on IO completion.
*/
if (!(iomap->flags & (IOMAP_F_SHARED|IOMAP_F_DIRTY)) &&
(dio->flags & IOMAP_DIO_WRITE_FUA) &&
blk_queue_fua(bdev_get_queue(iomap->bdev)))
(dio->flags & IOMAP_DIO_WRITE_FUA) && bdev_fua(iomap->bdev))
use_fua = true;
}
@ -654,9 +654,7 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
if (!READ_ONCE(dio->submit.waiter))
break;
if (!dio->submit.poll_bio ||
!bio_poll(dio->submit.poll_bio, NULL, 0))
blk_io_schedule();
blk_io_schedule();
}
__set_current_state(TASK_RUNNING);
}

9
fs/jbd2/journal.c
View File

@ -1762,7 +1762,6 @@ static int __jbd2_journal_erase(journal_t *journal, unsigned int flags)
unsigned long block, log_offset; /* logical */
unsigned long long phys_block, block_start, block_stop; /* physical */
loff_t byte_start, byte_stop, byte_count;
struct request_queue *q = bdev_get_queue(journal->j_dev);
/* flags must be set to either discard or zeroout */
if ((flags & ~JBD2_JOURNAL_FLUSH_VALID) || !flags ||
@ -1770,10 +1769,8 @@ static int __jbd2_journal_erase(journal_t *journal, unsigned int flags)
(flags & JBD2_JOURNAL_FLUSH_ZEROOUT)))
return -EINVAL;
if (!q)
return -ENXIO;
if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && !blk_queue_discard(q))
if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) &&
!bdev_max_discard_sectors(journal->j_dev))
return -EOPNOTSUPP;
/*
@ -1828,7 +1825,7 @@ static int __jbd2_journal_erase(journal_t *journal, unsigned int flags)
err = blkdev_issue_discard(journal->j_dev,
byte_start >> SECTOR_SHIFT,
byte_count >> SECTOR_SHIFT,
GFP_NOFS, 0);
GFP_NOFS);
} else if (flags & JBD2_JOURNAL_FLUSH_ZEROOUT) {
err = blkdev_issue_zeroout(journal->j_dev,
byte_start >> SECTOR_SHIFT,

5
fs/jfs/ioctl.c
View File

@ -110,14 +110,13 @@ long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case FITRIM:
{
struct super_block *sb = inode->i_sb;
struct request_queue *q = bdev_get_queue(sb->s_bdev);
struct fstrim_range range;
s64 ret = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (!blk_queue_discard(q)) {
if (!bdev_max_discard_sectors(sb->s_bdev)) {
jfs_warn("FITRIM not supported on device");
return -EOPNOTSUPP;
}
@ -127,7 +126,7 @@ long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return -EFAULT;
range.minlen = max_t(unsigned int, range.minlen,
q->limits.discard_granularity);
bdev_discard_granularity(sb->s_bdev));
ret = jfs_ioc_trim(inode, &range);
if (ret < 0)

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