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-rw-r--r--block/blk-merge.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index ba99351c0f58..b3ac40aef46b 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -99,16 +99,17 @@ void blk_recount_segments(struct request_queue *q, struct bio *bio)
{
bool no_sg_merge = !!test_bit(QUEUE_FLAG_NO_SG_MERGE,
&q->queue_flags);
+ bool merge_not_need = bio->bi_vcnt < queue_max_segments(q);
if (no_sg_merge && !bio_flagged(bio, BIO_CLONED) &&
- bio->bi_vcnt < queue_max_segments(q))
+ merge_not_need)
bio->bi_phys_segments = bio->bi_vcnt;
else {
struct bio *nxt = bio->bi_next;
bio->bi_next = NULL;
bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio,
- no_sg_merge);
+ no_sg_merge && merge_not_need);
bio->bi_next = nxt;
}