linux-kernel - [PATCH rh6] mm: skip zombie in OOM-killer

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Message-Id: <1299274256-2122-1-git-send-email-avagin@openvz.org>
Date:	Sat,  5 Mar 2011 00:30:56 +0300
From:	Andrey Vagin <avagin@...nvz.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Rientjes <rientjes@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	avagin@...nvz.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH rh6] mm: skip zombie in OOM-killer

A parent may wait a memory and zombie will prevent killing another task.

Signed-off-by: Andrey Vagin <avagin@...nvz.org>
---
 mm/oom_kill.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 7dcca55..2fc554e 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -311,7 +311,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
 		 * blocked waiting for another task which itself is waiting
 		 * for memory. Is there a better alternative?
 		 */
-		if (test_tsk_thread_flag(p, TIF_MEMDIE))
+		if (test_tsk_thread_flag(p, TIF_MEMDIE) && p->mm)
 			return ERR_PTR(-1UL);
 
 		/*
-- 
1.7.1

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