It is obvious that io merge can't be done between two different queues, so just try to run io merge in case of same queue. Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx> --- block/blk-merge.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index df69f4bb7717..893c1a60b701 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -1101,9 +1101,11 @@ bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio, * the same queue, there should be only one such rq in a queue */ *same_queue_rq = true; + + if (blk_attempt_bio_merge(q, rq, bio, nr_segs, false) == + BIO_MERGE_OK) + return true; } - if (blk_attempt_bio_merge(q, rq, bio, nr_segs, false) == BIO_MERGE_OK) - return true; return false; } -- 2.31.1
