diff options
| author | Christoph Hellwig <hch@lst.de> | 2023-05-19 06:40:46 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-05-19 19:52:29 -0600 |
| commit | 360f264834e34d08530c2fb9b67e3ffa65318761 (patch) | |
| tree | cc9a3f142802d97d9598aa8b531d7ed07f682311 /block/blk-mq.c | |
| parent | c1075e548ce6e6b5c7b71f2b05d344164ebc52bb (diff) | |
blk-mq: defer to the normal submission path for non-flush flush commands
If blk_insert_flush decides that a command does not need to use the
flush state machine, return false and let blk_mq_submit_bio handle
it the normal way (including using an I/O scheduler) instead of doing
a bypass insert.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230519044050.107790-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index e021740154fe..c0b394096b6b 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -45,6 +45,8 @@ static DEFINE_PER_CPU(struct llist_head, blk_cpu_done); static void blk_mq_insert_request(struct request *rq, blk_insert_t flags); +static void blk_mq_request_bypass_insert(struct request *rq, + blk_insert_t flags); static void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx, struct list_head *list); @@ -2430,7 +2432,7 @@ static void blk_mq_run_work_fn(struct work_struct *work) * Should only be used carefully, when the caller knows we want to * bypass a potential IO scheduler on the target device. */ -void blk_mq_request_bypass_insert(struct request *rq, blk_insert_t flags) +static void blk_mq_request_bypass_insert(struct request *rq, blk_insert_t flags) { struct blk_mq_hw_ctx *hctx = rq->mq_hctx; @@ -2977,10 +2979,8 @@ void blk_mq_submit_bio(struct bio *bio) return; } - if (op_is_flush(bio->bi_opf)) { - blk_insert_flush(rq); + if (op_is_flush(bio->bi_opf) && blk_insert_flush(rq)) return; - } if (plug) { blk_add_rq_to_plug(plug, rq); |