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author | Ming Lei <ming.lei@redhat.com> | 2018-06-25 13:31:45 +0200 |
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committer | Jens Axboe <axboe@kernel.dk> | 2018-07-09 17:07:52 +0200 |
commit | 8ab6bb9ee8d04ba56b9eb19cc7e4f56d0a43ad1a (patch) | |
tree | e0c888c58dd540bcfc50154b70d22526efe9109e /block/blk-mq.c | |
parent | block, bfq: give a better name to bfq_bfqq_may_idle (diff) | |
download | linux-8ab6bb9ee8d04ba56b9eb19cc7e4f56d0a43ad1a.tar.xz linux-8ab6bb9ee8d04ba56b9eb19cc7e4f56d0a43ad1a.zip |
blk-mq: cleanup blk_mq_get_driver_tag()
We never pass 'wait' as true to blk_mq_get_driver_tag(), and hence
we never change '**hctx' as well. The last use of these went away
with the flush cleanup, commit 0c2a6fe4dc3e.
So cleanup the usage and remove the two extra parameters.
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
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>
Diffstat (limited to '')
-rw-r--r-- | block/blk-mq.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 95919268564b..ae8a6b2c7c22 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -964,17 +964,14 @@ static inline unsigned int queued_to_index(unsigned int queued) return min(BLK_MQ_MAX_DISPATCH_ORDER - 1, ilog2(queued) + 1); } -bool blk_mq_get_driver_tag(struct request *rq, struct blk_mq_hw_ctx **hctx, - bool wait) +bool blk_mq_get_driver_tag(struct request *rq) { struct blk_mq_alloc_data data = { .q = rq->q, .hctx = blk_mq_map_queue(rq->q, rq->mq_ctx->cpu), - .flags = wait ? 0 : BLK_MQ_REQ_NOWAIT, + .flags = BLK_MQ_REQ_NOWAIT, }; - might_sleep_if(wait); - if (rq->tag != -1) goto done; @@ -991,8 +988,6 @@ bool blk_mq_get_driver_tag(struct request *rq, struct blk_mq_hw_ctx **hctx, } done: - if (hctx) - *hctx = data.hctx; return rq->tag != -1; } @@ -1034,7 +1029,7 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx **hctx, * Don't clear RESTART here, someone else could have set it. * At most this will cost an extra queue run. */ - return blk_mq_get_driver_tag(rq, hctx, false); + return blk_mq_get_driver_tag(rq); } wait = &this_hctx->dispatch_wait; @@ -1055,7 +1050,7 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx **hctx, * allocation failure and adding the hardware queue to the wait * queue. */ - ret = blk_mq_get_driver_tag(rq, hctx, false); + ret = blk_mq_get_driver_tag(rq); if (!ret) { spin_unlock(&this_hctx->lock); return false; @@ -1105,7 +1100,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list, if (!got_budget && !blk_mq_get_dispatch_budget(hctx)) break; - if (!blk_mq_get_driver_tag(rq, NULL, false)) { + if (!blk_mq_get_driver_tag(rq)) { /* * The initial allocation attempt failed, so we need to * rerun the hardware queue when a tag is freed. The @@ -1137,7 +1132,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list, bd.last = true; else { nxt = list_first_entry(list, struct request, queuelist); - bd.last = !blk_mq_get_driver_tag(nxt, NULL, false); + bd.last = !blk_mq_get_driver_tag(nxt); } ret = q->mq_ops->queue_rq(hctx, &bd); @@ -1700,7 +1695,7 @@ static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx, if (!blk_mq_get_dispatch_budget(hctx)) goto insert; - if (!blk_mq_get_driver_tag(rq, NULL, false)) { + if (!blk_mq_get_driver_tag(rq)) { blk_mq_put_dispatch_budget(hctx); goto insert; } |