Merge tag 'mailbox-v5.15' of git://git.linaro.org/landing-teams/working/fujitsu/integ...

[linux-2.6-microblaze.git] / block / elevator.c

diff --git a/block/elevator.c b/block/elevator.c
index 9beaafd..ff45d83 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -336,6 +336,9 @@ enum elv_merge elv_merge(struct request_queue *q, struct request **req,
        __rq = elv_rqhash_find(q, bio->bi_iter.bi_sector);
        if (__rq && elv_bio_merge_ok(__rq, bio)) {
                *req = __rq;
+
+               if (blk_discard_mergable(__rq))
+                       return ELEVATOR_DISCARD_MERGE;
                return ELEVATOR_BACK_MERGE;
        }