From: Oleg Nesterov <oleg@redhat.com>
Date: Mon, 14 Mar 2011 19:05:30 +0000 (+0100)
Subject: oom: oom_kill_process: fix the child_points logic
X-Git-Tag: v2.6.38~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dc1b83ab08f1954335692cdcd499f78c94f4c42a;p=pandora-kernel.git

oom: oom_kill_process: fix the child_points logic

oom_kill_process() starts with victim_points == 0.  This means that
(most likely) any child has more points and can be killed erroneously.

Also, "children has a different mm" doesn't match the reality, we should
check child->mm != t->mm.  This check is not exactly correct if t->mm ==
NULL but this doesn't really matter, oom_kill_task() will kill them
anyway.

Note: "Kill all processes sharing p->mm" in oom_kill_task() is wrong
too.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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