From 47a52e91f485dfd935042dbd2f66df1ac3fdfbb9 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Wed, 11 Dec 2013 16:02:58 -0500
Subject: [PATCH] kernfs: update kernfs_rename_ns() to consider
 KERNFS_STATIC_NAME

kernfs_rename_ns() currently assumes that the target sysfs_dirent has
a copied name.  This has been okay because sysfs supports rename only
for directories which always have copied names; however, there's
nothing in kernfs interface which calls for such restriction and
currently invoking kernfs_rename_ns() on a regular file leads to oops
because it ends up trying to kfree() a static name.

This patch updates kernfs_rename_ns() so that it skips kfree() of the
old name if it's static.  This allows it to be used for all node
types.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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