cgroup: we can use simple_lookup() now

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

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index e5583d10a325657620add60075ae0c9eead92617..0e0b20b8c5db172e8dc07fe4de10358c19939d60 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -802,7 +802,6 @@ static struct cgroup *task_cgroup_from_root(struct task_struct *task,
  */
 
 static int cgroup_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
-static struct dentry *cgroup_lookup(struct inode *, struct dentry *, unsigned int);
 static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry);
 static int cgroup_populate_dir(struct cgroup *cgrp, bool base_files,
                               unsigned long subsys_mask);
@@ -2642,7 +2641,7 @@ static const struct inode_operations cgroup_file_inode_operations = {
 };
 
 static const struct inode_operations cgroup_dir_inode_operations = {
-       .lookup = cgroup_lookup,
+       .lookup = simple_lookup,
        .mkdir = cgroup_mkdir,
        .rmdir = cgroup_rmdir,
        .rename = cgroup_rename,
@@ -2652,14 +2651,6 @@ static const struct inode_operations cgroup_dir_inode_operations = {
        .removexattr = cgroup_removexattr,
 };
 
-static struct dentry *cgroup_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
-{
-       if (dentry->d_name.len > NAME_MAX)
-               return ERR_PTR(-ENAMETOOLONG);
-       d_add(dentry, NULL);
-       return NULL;
-}
-
 /*
  * Check if a file is a control file
  */