1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index c2fbbc35c1e..f9a12f6243a 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -363,6 +363,9 @@ typedef __le32	f2fs_hash_t;
 
 /* One directory entry slot covers 8bytes-long file name */
 #define F2FS_NAME_LEN           8
+#define F2FS_NAME_LEN_BITS      3
+
+#define GET_DENTRY_SLOTS(x)     ((x + F2FS_NAME_LEN - 1) >> F2FS_NAME_LEN_BITS)
 
 /* the number of dentry in a block */
 #define NR_DENTRY_IN_BLOCK      214