1 files changed, 2 insertions, 1 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 9a451a9ffad4..5983d42df015 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -131,9 +131,10 @@ blkdev_get_block(struct inode *inode, sector_t iblock,
 
 static int
 blkdev_get_blocks(struct inode *inode, sector_t iblock,
-                unsigned long max_blocks, struct buffer_head *bh, int create)
+                struct buffer_head *bh, int create)
 {
         sector_t end_block = max_block(I_BDEV(inode));
+        unsigned long max_blocks = bh->b_size >> inode->i_blkbits;
 
         if ((iblock + max_blocks) > end_block) {
                 max_blocks = end_block - iblock;