From: David Rientjes <rientjes@google.com>
Date: Wed, 20 Jun 2012 19:52:58 +0000 (-0700)
Subject: mm, oom: fix and cleanup oom score calculations
X-Git-Tag: v3.5-rc4~20^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61eafb00d55dfbccdfce543c6b60e369ff4f8f18;p=pandora-kernel.git

mm, oom: fix and cleanup oom score calculations

The divide in p->signal->oom_score_adj * totalpages / 1000 within
oom_badness() was causing an overflow of the signed long data type.

This adds both the root bias and p->signal->oom_score_adj before doing the
normalization which fixes the issue and also cleans up the calculation.

Tested-by: Dave Jones <davej@redhat.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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