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| author | Bart Van Assche <bvanassche@acm.org> | 2018-09-26 23:01:06 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-09-26 23:11:28 +0200 |
| commit | 0d25bd072b494a0290a7855a2e0286c4a0c92041 (patch) | |
| tree | ee836fe1c5c5546c453b9ea8faca2ff541278f0d /block/blk-core.c | |
| parent | block: Split blk_pm_add_request() and blk_pm_put_request() (diff) | |
| download | linux-0d25bd072b494a0290a7855a2e0286c4a0c92041.tar.xz linux-0d25bd072b494a0290a7855a2e0286c4a0c92041.zip | |
block: Schedule runtime resume earlier
Instead of scheduling runtime resume of a request queue after a
request has been queued, schedule asynchronous resume during request
allocation. The new pm_request_resume() calls occur after
blk_queue_enter() has increased the q_usage_counter request queue
member. This change is needed for a later patch that will make request
allocation block while the queue status is not RPM_ACTIVE.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index fd91e9bf2893..fec135ae52cf 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -956,7 +956,8 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) wait_event(q->mq_freeze_wq, (atomic_read(&q->mq_freeze_depth) == 0 && - (pm || !blk_queue_pm_only(q))) || + (pm || (blk_pm_request_resume(q), + !blk_queue_pm_only(q)))) || blk_queue_dying(q)); if (blk_queue_dying(q)) return -ENODEV; |