1 files changed, 3 insertions, 0 deletions

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 22293fdf6514..de5716d8e525 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -139,6 +139,9 @@ void blk_queue_split(struct request_queue *q, struct bio **bio,
         bio_set_flag(res, BIO_SEG_VALID);
 
         if (split) {
+                /* there isn't chance to merge the splitted bio */
+                split->bi_rw |= REQ_NOMERGE;
+
                 bio_chain(split, *bio);
                 generic_make_request(*bio);
                 *bio = split;