From: Hugh Dickins <hugh@veritas.com>
Date: Tue, 12 Aug 2008 22:08:41 +0000 (-0700)
Subject: memcg: fix oops in mem_cgroup_shrink_usage
X-Git-Tag: v2.6.27-rc3~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9623e078c1f4692a91531af2f639ec8aff8f0472;p=pandora-kernel.git

memcg: fix oops in mem_cgroup_shrink_usage

Got an oops in mem_cgroup_shrink_usage() when testing loop over tmpfs:
yes, of course, loop0 has no mm: other entry points check but this didn't.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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