diff options
| author | Ming Lei <ming.lei@redhat.com> | 2018-06-25 19:31:46 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-07-09 09:07:52 -0600 |
| commit | 2278d69f030f6cb7fdacba6281a46fb9d637d2aa (patch) | |
| tree | dd28959bda9cdb33d9e959dc93f732a40d09ba5e | |
| parent | 8ab6bb9ee8d04ba56b9eb19cc7e4f56d0a43ad1a (diff) | |
blk-mq: don't pass **hctx to blk_mq_mark_tag_wait()
'hctx' won't be changed at all, so not necessary to pass
'**hctx' to blk_mq_mark_tag_wait().
Cc: Christoph Hellwig <hch@lst.de>
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Tested-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-mq.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index ae8a6b2c7c22..9eee896a3592 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1009,17 +1009,16 @@ static int blk_mq_dispatch_wake(wait_queue_entry_t *wait, unsigned mode, * restart. For both cases, take care to check the condition again after * marking us as waiting. */ -static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx **hctx, +static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx *hctx, struct request *rq) { - struct blk_mq_hw_ctx *this_hctx = *hctx; struct sbq_wait_state *ws; wait_queue_entry_t *wait; bool ret; - if (!(this_hctx->flags & BLK_MQ_F_TAG_SHARED)) { - if (!test_bit(BLK_MQ_S_SCHED_RESTART, &this_hctx->state)) - set_bit(BLK_MQ_S_SCHED_RESTART, &this_hctx->state); + if (!(hctx->flags & BLK_MQ_F_TAG_SHARED)) { + if (!test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state)) + set_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state); /* * It's possible that a tag was freed in the window between the @@ -1032,17 +1031,17 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx **hctx, return blk_mq_get_driver_tag(rq); } - wait = &this_hctx->dispatch_wait; + wait = &hctx->dispatch_wait; if (!list_empty_careful(&wait->entry)) return false; - spin_lock(&this_hctx->lock); + spin_lock(&hctx->lock); if (!list_empty(&wait->entry)) { - spin_unlock(&this_hctx->lock); + spin_unlock(&hctx->lock); return false; } - ws = bt_wait_ptr(&this_hctx->tags->bitmap_tags, this_hctx); + ws = bt_wait_ptr(&hctx->tags->bitmap_tags, hctx); add_wait_queue(&ws->wait, wait); /* @@ -1052,7 +1051,7 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx **hctx, */ ret = blk_mq_get_driver_tag(rq); if (!ret) { - spin_unlock(&this_hctx->lock); + spin_unlock(&hctx->lock); return false; } @@ -1063,7 +1062,7 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx **hctx, spin_lock_irq(&ws->wait.lock); list_del_init(&wait->entry); spin_unlock_irq(&ws->wait.lock); - spin_unlock(&this_hctx->lock); + spin_unlock(&hctx->lock); return true; } @@ -1108,7 +1107,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list, * before we add this entry back on the dispatch list, * we'll re-run it below. */ - if (!blk_mq_mark_tag_wait(&hctx, rq)) { + if (!blk_mq_mark_tag_wait(hctx, rq)) { blk_mq_put_dispatch_budget(hctx); /* * For non-shared tags, the RESTART check |