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authorBart Van Assche <bart.vanassche@wdc.com>2018-01-19 19:58:55 +0300
committerJens Axboe <axboe@kernel.dk>2018-01-19 22:52:01 +0300
commitae943d20624de0a6aac7dd0597616dce2c498029 (patch)
tree9fa3d4d76dbfce384e11f6119a44f16885c20fdb /block
parentc77ff7fd03ddca8face268c4cf093c0edf4bcf1f (diff)
downloadlinux-ae943d20624de0a6aac7dd0597616dce2c498029.tar.xz
blk-mq: Avoid that blk_mq_delay_run_hw_queue() introduces unintended delays
Make sure that calling blk_mq_run_hw_queue() or blk_mq_kick_requeue_list() triggers a queue run without delay even if blk_mq_delay_run_hw_queue() has been called recently and if its delay has not yet expired. Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/blk-mq.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 0fc6c95e5a29..43e7449723e0 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -785,7 +785,7 @@ EXPORT_SYMBOL(blk_mq_add_to_requeue_list);
void blk_mq_kick_requeue_list(struct request_queue *q)
{
- kblockd_schedule_delayed_work(&q->requeue_work, 0);
+ kblockd_mod_delayed_work_on(WORK_CPU_UNBOUND, &q->requeue_work, 0);
}
EXPORT_SYMBOL(blk_mq_kick_requeue_list);
@@ -1401,9 +1401,8 @@ static void __blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async,
put_cpu();
}
- kblockd_schedule_delayed_work_on(blk_mq_hctx_next_cpu(hctx),
- &hctx->run_work,
- msecs_to_jiffies(msecs));
+ kblockd_mod_delayed_work_on(blk_mq_hctx_next_cpu(hctx), &hctx->run_work,
+ msecs_to_jiffies(msecs));
}
void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs)