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block: also check RQF_STATS in blk_mq_need_time_stamp() 

In __blk_mq_end_request() if block stats needs update, we should
ensure now is valid instead of 0 even when iostat is disabled.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
alistair/sunxi64-5.4-dsi
Hou Tao 2019-05-21 15:59:04 +08:00 committed by Jens Axboe
parent 3d24430694
commit 9a91b05bba
1 changed files with 3 additions and 3 deletions
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6
block/blk-mq.c
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@ -282,12 +282,12 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
EXPORT_SYMBOL(blk_mq_can_queue);
/*
* Only need start/end time stamping if we have stats enabled, or using
* an IO scheduler.
* Only need start/end time stamping if we have iostat or
* blk stats enabled, or using an IO scheduler.
*/
static inline bool blk_mq_need_time_stamp(struct request *rq)
{
return (rq->rq_flags & RQF_IO_STAT) || rq->q->elevator;
return (rq->rq_flags & (RQF_IO_STAT | RQF_STATS)) || rq->q->elevator;
}
static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data,