From: Christian Brauner <brauner@kernel.org>
Date: Mon, 17 Nov 2025 09:34:00 +0000 (+0100)
Subject: ovl: port ovl_nlink_end() to cred guard
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9e5ec68f3a706515fe348b674e908edf80e70e63;p=thirdparty%2Fkernel%2Flinux.git

ovl: port ovl_nlink_end() to cred guard

Use the scoped ovl cred guard.

Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-29-b31603935724@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index e61eb758349ac..0d9487cac0e88 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -1211,11 +1211,8 @@ void ovl_nlink_end(struct dentry *dentry)
 	ovl_drop_write(dentry);
 
 	if (ovl_test_flag(OVL_INDEX, inode) && inode->i_nlink == 0) {
-		const struct cred *old_cred;
-
-		old_cred = ovl_override_creds(dentry->d_sb);
-		ovl_cleanup_index(dentry);
-		ovl_revert_creds(old_cred);
+		with_ovl_creds(dentry->d_sb)
+			ovl_cleanup_index(dentry);
 	}
 
 	ovl_inode_unlock(inode);