From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 8 Mar 2018 11:01:22 -0500
Subject: debugfs_lookup(): switch to lookup_one_len_unlocked()
Patch-mainline: v4.17-rc1
Git-commit: cd1c0c9321999737073dcfc3364e194e02604bce
References: bsc#1171979

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 fs/debugfs/inode.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -276,10 +276,7 @@ struct dentry *debugfs_lookup(const char
 	if (!parent)
 		parent = debugfs_mount->mnt_root;
 
-	inode_lock(d_inode(parent));
-	dentry = lookup_one_len(name, parent, strlen(name));
-	inode_unlock(d_inode(parent));
-
+	dentry = lookup_one_len_unlocked(name, parent, strlen(name));
 	if (IS_ERR(dentry))
 		return NULL;
 	if (!d_really_is_positive(dentry)) {