+ mm-oom_killc-fix-task_will_free_mem-comment.patch added to -mm tree

+ mm-oom_killc-fix-task_will_free_mem-comment.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/oom_kill.c: fix task_will_free_mem() comment
has been added to the -mm tree.  Its filename is
     mm-oom_killc-fix-task_will_free_mem-comment.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-oom_killc-fix-task_will_free_mem-comment.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-oom_killc-fix-task_will_free_mem-comment.patch

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------------------------------------------------------
From: Michal Hocko <mhocko@kernel.org>
Subject: mm/oom_kill.c: fix task_will_free_mem() comment

Attempt to demystify the task_will_free_mem() loop.

Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/oom_kill.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff -puN mm/oom_kill.c~mm-oom_killc-fix-task_will_free_mem-comment mm/oom_kill.c
--- a/mm/oom_kill.c~mm-oom_killc-fix-task_will_free_mem-comment
+++ a/mm/oom_kill.c
@@ -803,8 +803,9 @@ static bool task_will_free_mem(struct ta
 		return true;
 
 	/*
-	 * This is really pessimistic but we do not have any reliable way
-	 * to check that external processes share with our mm
+	 * Make sure that all tasks which share the mm with the given tasks
+	 * are dying as well to make sure that a) nobody pins its mm and
+	 * b) the task is also reapable by the oom reaper.
 	 */
 	rcu_read_lock();
 	for_each_process(p) {
_

Patches currently in -mm which might be from mhocko@kernel.org are

mm-oom_killc-fix-task_will_free_mem-comment.patch