From 7473534130c3156d199512c99ff1b796233e8547 Mon Sep 17 00:00:00 2001
From: Tristan Schmelcher <tschmelcher@google.com>
Date: Mon, 8 Jul 2013 16:19:49 -0400
Subject: [PATCH] uml: Fix which_tmpdir failure when /dev/shm is a symlink, and
 in other edge cases

which_tmpdir did the wrong thing if /dev/shm was a symlink (e.g., to /run/shm),
if there were multiple mounts on top of each other, if the mount(s) were
obscured by a later mount, or if /dev/shm was a prefix of another mount point.
This fixes these cases. Applies to 3.9.6.

Signed-off-by: Tristan Schmelcher <tschmelcher@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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