From 13aab428a73d3200b9283b61b7fdf5713181ac66 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 23 Feb 2011 17:54:08 -0500
Subject: [PATCH] separate -ESTALE/-ECHILD retries in do_filp_open() from real
 work

new helper: path_openat().  Does what do_filp_open() does, except
that it tries only the walk mode (RCU/normal/force revalidation)
it had been told to.

Both create and non-create branches are using path_lookupat() now.
Fixed the double audit_inode() in non-create branch.

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