From a7472baba22dd5d68580f528374f93421b33667e Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 4 Mar 2011 14:39:30 -0500
Subject: [PATCH] make nameidata_dentry_drop_rcu_maybe() always leave RCU mode

Now we have do_follow_link() guaranteed to leave without dangling RCU
and the next step will get LOOKUP_RCU logics completely out of
link_path_walk().

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