add comment for ext4_dir_entry_2 file_type member

Signed-off-by: Jonathan Grant <[email protected]>
Reviewed-by: Andreas Dilger <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Theodore Ts'o <[email protected]>

Author: jonnygrant

fs/ext4/ext4.h

@@ -2061,7 +2061,7 @@ struct ext4_dir_entry_2 {
 	__le32	inode;			/* Inode number */
 	__le16	rec_len;		/* Directory entry length */
 	__u8	name_len;		/* Name length */
-	__u8	file_type;
+	__u8	file_type;		/* See file type macros EXT4_FT_* below */
 	char	name[EXT4_NAME_LEN];	/* File name */
 };