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| author | Mike Snitzer <snitzer@redhat.com> | 2015-02-24 20:49:18 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-02-24 20:49:18 -0500 |
| commit | 489ab49e738667ba9d40b6d2b0b47910b5194208 (patch) | |
| tree | b7576638e97f8998aa63404521231357a418ed92 | |
| parent | 9068f2f15d5fc7a5c9dc6e6963913216ede0c745 (diff) | |
| download | linux-dm-489ab49e738667ba9d40b6d2b0b47910b5194208.tar.gz | |
dm: don't schedule delayed run of the queue if nothing to do
Notice: this object is not reachable from any branch.
In request-based DM's dm_request_fn(), if blk_peek_request() returns
NULL just return. Avoids unnecessary blk_delay_queue().
Reported-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Notice: this object is not reachable from any branch.
| -rw-r--r-- | drivers/md/dm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 6ffed8004b27c..52d995c511829 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1960,7 +1960,7 @@ static void dm_request_fn(struct request_queue *q) while (!blk_queue_stopped(q)) { rq = blk_peek_request(q); if (!rq) - goto delay_and_out; + goto out; /* always use block 0 to find the target for flushes for now */ pos = 0; |