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| author | Ming Lei <tom.leiming@gmail.com> | 2014-01-03 10:00:08 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2014-01-03 10:00:08 -0700 |
| commit | 0fec08b4ecfc36fd8a64432343b2964fb86d2675 (patch) | |
| tree | 4037e52bedcd991c89f789a99d8723638aed80e6 /block | |
| parent | 3edcc0ce85c59d45d6dfc6a36a6b3f8b31ba9887 (diff) | |
| download | linux-0fec08b4ecfc36fd8a64432343b2964fb86d2675.tar.gz linux-0fec08b4ecfc36fd8a64432343b2964fb86d2675.tar.bz2 linux-0fec08b4ecfc36fd8a64432343b2964fb86d2675.zip | |
blk-mq: fix initializing request's start time
blk_rq_init() is called in req's complete handler to initialize
the request, so the members of start_time and start_time_ns might
become inaccurate when it is allocated in future.
The patch initializes the two members in blk_mq_rq_ctx_init() to
fix the problem.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 6914f9bd470a..473ce4039060 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -190,6 +190,8 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx, rq->mq_ctx = ctx; rq->cmd_flags = rw_flags; + rq->start_time = jiffies; + set_start_time_ns(rq); ctx->rq_dispatched[rw_is_sync(rw_flags)]++; } |