1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 464f068f8b16..fb7e9b7ccbe3 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -280,6 +280,7 @@ map_bh(struct buffer_head *bh, struct super_block *sb, sector_t block)
         set_buffer_mapped(bh);
         bh->b_bdev = sb->s_bdev;
         bh->b_blocknr = block;
+        bh->b_size = sb->s_blocksize;
 }
 
 /*