From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 21 Mar 2014 01:10:51 +0000 (-0400)
Subject: switch mnt_hash to hlist
X-Git-Tag: v3.14~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38129a13e6e7;p=pandora-kernel.git

switch mnt_hash to hlist

fixes RCU bug - walking through hlist is safe in face of element moves,
since it's self-terminating.  Cyclic lists are not - if we end up jumping
to another hash chain, we'll loop infinitely without ever hitting the
original list head.

[fix for dumb braino folded]

Spotted by: Max Kellermann <mk@cm4all.com>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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