tree 438e817fdf7d224f9fda1186eb24b1bbc37a4b5c
parent 0b1b901b5a98bb36943d10820efc796f7cd45ff3
author Al Viro <viro@zeniv.linux.org.uk> 1395364251 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1396221531 -0400

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>