Messages in this thread Patch in this message | | | From | Ming Lei <> | Subject | [PATCH v1 19/27] dm: dm.c: replace 'bio->bi_vcnt == 1' with !bio_multiple_segments | Date | Thu, 14 Apr 2016 20:02:37 +0800 |
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Signed-off-by: Ming Lei <tom.leiming@gmail.com> --- drivers/md/dm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index be49057..4c34f88 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2172,7 +2172,8 @@ static void dm_request_fn(struct request_queue *q) pos = blk_rq_pos(rq); if ((dm_request_peeked_before_merge_deadline(md) && - md_in_flight(md) && rq->bio && rq->bio->bi_vcnt == 1 && + md_in_flight(md) && rq->bio && + !bio_multiple_segments(rq->bio) && md->last_rq_pos == pos && md->last_rq_rw == rq_data_dir(rq)) || (ti->type->busy && ti->type->busy(ti))) { blk_delay_queue(q, HZ / 100); -- 1.9.1
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