diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2857e5b..98bff01 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4221,7 +4221,7 @@
 		 struct kstat *stat)
 {
 	struct inode *inode;
-	unsigned long delalloc_blocks;
+	unsigned long long delalloc_blocks;
 
 	inode = dentry->d_inode;
 	generic_fillattr(inode, stat);
@@ -4238,7 +4238,7 @@
 	 */
 	delalloc_blocks = EXT4_I(inode)->i_reserved_data_blocks;
 
-	stat->blocks += (delalloc_blocks << inode->i_sb->s_blocksize_bits)>>9;
+	stat->blocks += delalloc_blocks << (inode->i_sb->s_blocksize_bits-9);
 	return 0;
 }