ovl: use lockless_dereference() for upperdentry

Don't open code lockless_dereference() in ovl_upperdentry_dereference(). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
mariux64 · Nov 20, 2014 · 71d5092 · 71d5092
1 parent 91c7794
commit 71d5092
Showing 1 changed file with 1 addition and 6 deletions.
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
@@ -84,12 +84,7 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry)
 
 static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe)
 {
-	struct dentry *upperdentry = ACCESS_ONCE(oe->__upperdentry);
-	/*
-	 * Make sure to order reads to upperdentry wrt ovl_dentry_update()
-	 */
-	smp_read_barrier_depends();
-	return upperdentry;
+	return lockless_dereference(oe->__upperdentry);
 }
 
 void ovl_path_upper(struct dentry *dentry, struct path *path)