From: Tejun Heo <tj@kernel.org>
Date: Wed, 11 Dec 2013 21:02:58 +0000 (-0500)
Subject: kernfs: update kernfs_rename_ns() to consider KERNFS_STATIC_NAME
X-Git-Tag: v3.14-rc1~151^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47a52e91f485dfd935042dbd2f66df1ac3fdfbb9;p=pandora-kernel.git

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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