From: Anton Vorontsov <anton.vorontsov@linaro.org>
Date: Mon, 6 Feb 2012 16:30:01 +0000 (+0400)
Subject: staging: android/lowmemorykiller: Do not kill kernel threads
X-Git-Tag: firefly_0821_release~3680^2~3347^2~176^2~157
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9823ec9ded836ee7ca4fe5ab7964b9cdc8af010c;p=firefly-linux-kernel-4.4.55.git

staging: android/lowmemorykiller: Do not kill kernel threads

LMK should not try killing kernel threads.

Suggested-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 6e800d35ebda..ae38c39a1525 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -138,6 +138,9 @@ static int lowmem_shrink(struct shrinker *s, struct shrink_control *sc)
 		struct task_struct *p;
 		int oom_adj;
 
+		if (tsk->flags & PF_KTHREAD)
+			continue;
+
 		p = find_lock_task_mm(tsk);
 		if (!p)
 			continue;