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| author | Ming Lei <tom.leiming@gmail.com> | 2013-12-26 21:31:35 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-12-31 09:53:05 -0700 |
| commit | 43a5e4e21964a6efb4d14a34644ec7109d0ae891 (patch) | |
| tree | 9ff635ec990583c0877d4056841d35e6018825a1 /block/blk-core.c | |
| parent | b28bc9b38c52f63f43e3fd875af982f2240a2859 (diff) | |
| download | linux-0-day-43a5e4e21964a6efb4d14a34644ec7109d0ae891.tar.gz linux-0-day-43a5e4e21964a6efb4d14a34644ec7109d0ae891.tar.xz | |
block: blk-mq: support draining mq queue
blk_mq_drain_queue() is introduced so that we can drain
mq queue inside blk_cleanup_queue().
Also don't accept new requests any more if queue is marked
as dying.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 5da8e900d3b18..accb7fc6ec944 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -38,6 +38,7 @@ #include "blk.h" #include "blk-cgroup.h" +#include "blk-mq.h" EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_remap); EXPORT_TRACEPOINT_SYMBOL_GPL(block_rq_remap); @@ -497,8 +498,13 @@ void blk_cleanup_queue(struct request_queue *q) * Drain all requests queued before DYING marking. Set DEAD flag to * prevent that q->request_fn() gets invoked after draining finished. */ - spin_lock_irq(lock); - __blk_drain_queue(q, true); + if (q->mq_ops) { + blk_mq_drain_queue(q); + spin_lock_irq(lock); + } else { + spin_lock_irq(lock); + __blk_drain_queue(q, true); + } queue_flag_set(QUEUE_FLAG_DEAD, q); spin_unlock_irq(lock); |