From 197df04c749a07616621b762e699b1fff4102fac Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 8 Sep 2013 14:03:27 -0400
Subject: [PATCH] rename user_path_umountat() to user_path_mountpoint_at()

... and move the extern from linux/namei.h to fs/internal.h,
along with that of vfs_path_lookup().

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