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| author |   Ming Lei <ming.lei@redhat.com> | 2017-06-06 23:22:10 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2017-06-18 14:24:48 -0600 |
| commit | 641a9ed60f3620936921a58fb21d9f3aa891f3a4 (patch) | |
| tree | 36421200c74e648854f95f0d417910194ef2c056 /block | |
| parent | blk-mq: clarify dispatch may not be drained/blocked by stopping queue (diff) | |
| download | wireguard-linux-641a9ed60f3620936921a58fb21d9f3aa891f3a4.tar.xz wireguard-linux-641a9ed60f3620936921a58fb21d9f3aa891f3a4.zip | |
Revert "blk-mq: don't use sync workqueue flushing from drivers"
This patch reverts commit 2719aa217e0d02(blk-mq: don't use
sync workqueue flushing from drivers) because only
blk_mq_quiesce_queue() need the sync flush, and now
we don't need to stop queue any more, so revert it.
Also changes to cancel_delayed_work() in blk_mq_stop_hw_queue().
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 30 |
1 files changed, 8 insertions, 22 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 89cbd022b1eb..dd276a9e138e 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -42,7 +42,6 @@ static LIST_HEAD(all_q_list); static void blk_mq_poll_stats_start(struct request_queue *q); static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb); -static void __blk_mq_stop_hw_queues(struct request_queue *q, bool sync); static int blk_mq_poll_stats_bkt(const struct request *rq) { @@ -1194,16 +1193,6 @@ bool blk_mq_queue_stopped(struct request_queue *q) } EXPORT_SYMBOL(blk_mq_queue_stopped); -static void __blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx, bool sync) -{ - if (sync) - cancel_delayed_work_sync(&hctx->run_work); - else - cancel_delayed_work(&hctx->run_work); - - set_bit(BLK_MQ_S_STOPPED, &hctx->state); -} - /* * This function is often used for pausing .queue_rq() by driver when * there isn't enough resource or some conditions aren't satisfied, and @@ -1215,18 +1204,11 @@ static void __blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx, bool sync) */ void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx) { - __blk_mq_stop_hw_queue(hctx, false); -} -EXPORT_SYMBOL(blk_mq_stop_hw_queue); + cancel_delayed_work(&hctx->run_work); -static void __blk_mq_stop_hw_queues(struct request_queue *q, bool sync) -{ - struct blk_mq_hw_ctx *hctx; - int i; - - queue_for_each_hw_ctx(q, hctx, i) - __blk_mq_stop_hw_queue(hctx, sync); + set_bit(BLK_MQ_S_STOPPED, &hctx->state); } +EXPORT_SYMBOL(blk_mq_stop_hw_queue); /* * This function is often used for pausing .queue_rq() by driver when @@ -1239,7 +1221,11 @@ static void __blk_mq_stop_hw_queues(struct request_queue *q, bool sync) */ void blk_mq_stop_hw_queues(struct request_queue *q) { - __blk_mq_stop_hw_queues(q, false); + struct blk_mq_hw_ctx *hctx; + int i; + + queue_for_each_hw_ctx(q, hctx, i) + blk_mq_stop_hw_queue(hctx); } EXPORT_SYMBOL(blk_mq_stop_hw_queues); |