From 368ee9ba565d6e13912791b05f3cc1dfa945a62a Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 8 May 2015 17:19:59 -0400
Subject: [PATCH] namei: path_init() calling conventions change

* lift link_path_walk() into callers; moving it down into path_init()
had been a mistake.  Stack footprint, among other things...
* do _not_ call path_cleanup() after path_init() failure; on all failure
exits out of it we have nothing for path_cleanup() to do
* have path_init() return pathname or ERR_PTR(-E...)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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