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| author | Jens Axboe <axboe@fb.com> | 2014-05-23 22:14:57 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-05-23 22:14:57 +0200 |
| commit | c22d9d8a60646a1521ae12a2176f58da19afa186 (patch) | |
| tree | a775af0fa69f0eb8f81ce258fbfbab52d6ae86e4 /block | |
| parent | blk-mq: export blk_mq_tag_busy_iter (diff) | |
| download | linux-c22d9d8a60646a1521ae12a2176f58da19afa186.tar.xz linux-c22d9d8a60646a1521ae12a2176f58da19afa186.zip | |
blk-mq: allow setting of per-request timeouts
Currently blk-mq uses the queue timeout for all requests. But
for some commands, drivers may want to set a specific timeout
for special requests. Allow this to be passed in through
request->timeout, and use it if set.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 54e78863c083..9bc075335d06 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -454,9 +454,13 @@ static void blk_mq_start_request(struct request *rq, bool last) /* * Just mark start time and set the started bit. Due to memory * ordering, we know we'll see the correct deadline as long as - * REQ_ATOMIC_STARTED is seen. + * REQ_ATOMIC_STARTED is seen. Use the default queue timeout, + * unless one has been set in the request. */ - rq->deadline = jiffies + q->rq_timeout; + if (!rq->timeout) + rq->deadline = jiffies + q->rq_timeout; + else + rq->deadline = jiffies + rq->timeout; /* * Mark us as started and clear complete. Complete might have been |