1 files changed, 17 insertions, 0 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index d4700d101ea7..2cbfc0b04d37 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -246,6 +246,23 @@ struct flex_groups {
                            EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
                            EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL)
 
+/* Flags that are appropriate for regular files (all but dir-specific ones). */
+#define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL))
+
+/* Flags that are appropriate for non-directories/regular files. */
+#define EXT4_OTHER_FLMASK (EXT4_NODUMP_FL | EXT4_NOATIME_FL)
+
+/* Mask out flags that are inappropriate for the given type of inode. */
+static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
+{
+        if (S_ISDIR(mode))
+                return flags;
+        else if (S_ISREG(mode))
+                return flags & EXT4_REG_FLMASK;
+        else
+                return flags & EXT4_OTHER_FLMASK;
+}
+
 /*
  * Inode dynamic state flags
  */