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-rw-r--r--fs/configfs/dir.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 8a3b6a1..c398861 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -93,8 +93,8 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
*
* called with parent inode's i_mutex held
*/
-int configfs_dirent_exists(struct configfs_dirent *parent_sd,
- const unsigned char *new)
+static int configfs_dirent_exists(struct configfs_dirent *parent_sd,
+ const unsigned char *new)
{
struct configfs_dirent * sd;
@@ -1176,8 +1176,9 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
return;
}
- mutex_lock(&configfs_sb->s_root->d_inode->i_mutex);
- mutex_lock(&dentry->d_inode->i_mutex);
+ mutex_lock_nested(&configfs_sb->s_root->d_inode->i_mutex,
+ I_MUTEX_PARENT);
+ mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
if (configfs_detach_prep(dentry)) {
printk(KERN_ERR "configfs: Tried to unregister non-empty subsystem!\n");
}
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