1 files changed, 6 insertions, 3 deletions

diff --git a/fs/bio.c b/fs/bio.c
index 13e956779e1..f855e0e1869 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -1487,9 +1487,12 @@ struct bio_pair *bio_split(struct bio *bi, int first_sectors)
 
         bp->bv1 = bi->bi_io_vec[0];
         bp->bv2 = bi->bi_io_vec[0];
-        bp->bv2.bv_offset += first_sectors << 9;
-        bp->bv2.bv_len -= first_sectors << 9;
-        bp->bv1.bv_len = first_sectors << 9;
+
+        if (bio_is_rw(bi)) {
+                bp->bv2.bv_offset += first_sectors << 9;
+                bp->bv2.bv_len -= first_sectors << 9;
+                bp->bv1.bv_len = first_sectors << 9;
+        }
 
         bp->bio1.bi_io_vec = &bp->bv1;
         bp->bio2.bi_io_vec = &bp->bv2;