linux-kernel - [PATCH] allow oom_adj of saintly processes

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Date:	Wed, 21 Feb 2007 18:36:00 +0530
From:	Joshua N Pritikin <jpritikin@...ox.com>
To:	linux-kernel@...r.kernel.org
Cc:	trivial@...nel.org
Subject: [PATCH] allow oom_adj of saintly processes

If the badness of a process is zero then oom_adj>0 has no effect. This 
patch makes sure that the oom_adj shift actually increases badness 
points appropriately.

I am not subscribed. Please CC me with any comments. Thanks.

Signed-off-by: Joshua N. Pritikin <jpritikin@...ox.com>

--- linux/mm/oom_kill.c.orig	2007-02-18 14:58:35.000000000 +0530
+++ linux/mm/oom_kill.c	2007-02-18 14:57:52.000000000 +0530
@@ -147,9 +147,11 @@ unsigned long badness(struct task_struct
 	 * Adjust the score by oomkilladj.
 	 */
 	if (p->oomkilladj) {
-		if (p->oomkilladj > 0)
+		if (p->oomkilladj > 0) {
+			if (!points)
+				points = 1;
 			points <<= p->oomkilladj;
-		else
+		} else
 			points >>= -(p->oomkilladj);
 	}
 
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