tree 6a6ea7ad79a585375b16d1b50bb2236c33a9cf3c
parent b168fff72109a3627686578e31e745f778832f98
author Oleg Drokin <green@linuxhacker.ru> 1391200918 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1391207593 -0500

Fix mountpoint reference leakage in linkat

Recent changes to retry on ESTALE in linkat
(commit 442e31ca5a49e398351b2954b51f578353fdf210)
introduced a mountpoint reference leak and a small memory
leak in case a filesystem link operation returns ESTALE
which is pretty normal for distributed filesystems like
lustre, nfs and so on.
Free old_path in such a case.

[AV: there was another missing path_put() nearby - on the previous
goto retry]

Signed-off-by: Oleg Drokin: <green@linuxhacker.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>