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-rw-r--r--fs/overlayfs/overlayfs.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 008420e834d8..25cf26e57cdb 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -350,6 +350,13 @@ static inline void ovl_copyattr(struct inode *from, struct inode *to)
 	to->i_ctime = from->i_ctime;
 }
 
+static inline void ovl_copyflags(struct inode *from, struct inode *to)
+{
+	unsigned int mask = S_SYNC | S_IMMUTABLE | S_APPEND | S_NOATIME;
+
+	inode_set_flags(to, from->i_flags & mask, mask);
+}
+
 /* dir.c */
 extern const struct inode_operations ovl_dir_inode_operations;
 int ovl_cleanup_and_whiteout(struct dentry *workdir, struct inode *dir,