kernfs: use lookup_one_len_unlocked()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 3 deletions

diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index f73541fbe7af..b5b5f079a7f7 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -120,9 +120,8 @@ struct dentry *kernfs_node_dentry(struct kernfs_node *kn,
                 kntmp = find_next_ancestor(kn, knparent);
                 if (WARN_ON(!kntmp))
                         return ERR_PTR(-EINVAL);
-                mutex_lock(&d_inode(dentry)->i_mutex);
-                dtmp = lookup_one_len(kntmp->name, dentry, strlen(kntmp->name));
-                mutex_unlock(&d_inode(dentry)->i_mutex);
+                dtmp = lookup_one_len_unlocked(kntmp->name, dentry,
+                                               strlen(kntmp->name));
                 dput(dentry);
                 if (IS_ERR(dtmp))
                         return dtmp;