From: Christian Brauner <brauner@kernel.org>
Date: Mon, 17 Nov 2025 09:33:47 +0000 (+0100)
Subject: ovl: port ovl_get_link() to cred guard
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=47eba7f7fd1543dd1a677e6f971b11925e8b9b9b;p=thirdparty%2Fkernel%2Flinux.git

ovl: port ovl_get_link() to cred guard

Use the scoped ovl cred guard.

Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-16-b31603935724@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 7dbf6cf2252df..31e4fb14ac13f 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -325,16 +325,11 @@ static const char *ovl_get_link(struct dentry *dentry,
 				struct inode *inode,
 				struct delayed_call *done)
 {
-	const struct cred *old_cred;
-	const char *p;
-
 	if (!dentry)
 		return ERR_PTR(-ECHILD);
 
-	old_cred = ovl_override_creds(dentry->d_sb);
-	p = vfs_get_link(ovl_dentry_real(dentry), done);
-	ovl_revert_creds(old_cred);
-	return p;
+	with_ovl_creds(dentry->d_sb)
+		return vfs_get_link(ovl_dentry_real(dentry), done);
 }
 
 #ifdef CONFIG_FS_POSIX_ACL