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make configfs_pin_fs() return root dentry on success

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... and make configfs_mnt static

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-03-17 16:53:29 -04:00
parent 0dd6c08a00
commit 2a152ad3a5
3 changed files with 11 additions and 13 deletions
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14
fs/configfs/dir.c
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@@ -1075,16 +1075,15 @@ int configfs_depend_item(struct configfs_subsystem *subsys,
* 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 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
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);