3.13.11.7 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Ming Lei <tom.leiming@xxxxxxxxx> commit 0fec08b4ecfc36fd8a64432343b2964fb86d2675 upstream. 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@xxxxxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Cc: Chris J Arges <chris.j.arges@xxxxxxxxxxxxx> Cc: Tim Gardner <tim.gardner@xxxxxxxxxxxxx> Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx> --- block/blk-mq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index 7f9b1f6..2192cf4 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -179,6 +179,8 @@ 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)]++; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html