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-rw-r--r--drivers/md/raid5.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 43f231a..ed859e0 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1411,6 +1411,11 @@ static int make_request (request_queue_t *q, struct bio * bi)
sector_t logical_sector, last_sector;
struct stripe_head *sh;
+ if (unlikely(bio_barrier(bi))) {
+ bio_endio(bi, bi->bi_size, -EOPNOTSUPP);
+ return 0;
+ }
+
md_write_start(mddev, bi);
if (bio_data_dir(bi)==WRITE) {
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