make configfs_pin_fs() return root dentry on success
... and make configfs_mnt static
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 6c560e77..7e6c52d 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -1075,16 +1075,15 @@
* Pin the configfs filesystem. This means we can safely access
* the root of the configfs filesystem.
*/
- ret = configfs_pin_fs();
- if (ret)
- return ret;
+ root = configfs_pin_fs();
+ if (IS_ERR(root))
+ return PTR_ERR(root);
/*
* Next, lock the root directory. We're going to check that the
* subsystem is really registered, and so we need to lock out
* configfs_[un]register_subsystem().
*/
- root = configfs_mount->mnt_root;
mutex_lock(&root->d_inode->i_mutex);
root_sd = root->d_fsdata;
@@ -1673,14 +1672,13 @@
struct dentry *root;
struct configfs_dirent *sd;
- err = configfs_pin_fs();
- if (err)
- return err;
+ root = configfs_pin_fs();
+ if (IS_ERR(root))
+ return PTR_ERR(root);
if (!group->cg_item.ci_name)
group->cg_item.ci_name = group->cg_item.ci_namebuf;
- root = configfs_mount->mnt_root;
sd = root->d_fsdata;
link_group(to_config_group(sd->s_element), group);
