summaryrefslogtreecommitdiff
path: root/fs/overlayfs/util.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/overlayfs/util.c')
-rw-r--r--fs/overlayfs/util.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index 4035e640f402..f5678a3f8350 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2011 Novell Inc.
* Copyright (C) 2016 Red Hat, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
*/
#include <linux/fs.h>
@@ -652,6 +649,18 @@ void ovl_inuse_unlock(struct dentry *dentry)
}
}
+bool ovl_is_inuse(struct dentry *dentry)
+{
+ struct inode *inode = d_inode(dentry);
+ bool inuse;
+
+ spin_lock(&inode->i_lock);
+ inuse = (inode->i_state & I_OVL_INUSE);
+ spin_unlock(&inode->i_lock);
+
+ return inuse;
+}
+
/*
* Does this overlay dentry need to be indexed on copy up?
*/