>From e2e22cd0c0c486d1aef01232fcc62b00fb01709f Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Date: Sat, 2 Jul 2016 23:02:19 +0900
Subject: [PATCH 5/8] mm,oom: Remove unused signal_struct->oom_victims.
Since OOM_SCAN_ABORT case was removed, we no longer need to use
signal_struct->oom_victims useless. Remove it.
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
---
include/linux/sched.h | 1 -
mm/oom_kill.c | 2 --
2 files changed, 3 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 553af29..f472f27 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -671,7 +671,6 @@ struct signal_struct {
atomic_t sigcnt;
atomic_t live;
int nr_threads;
- atomic_t oom_victims; /* # of TIF_MEDIE threads in this thread group */
struct list_head thread_head;
wait_queue_head_t wait_chldexit; /* for wait4() */
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 734378a..55e0ffb 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -659,7 +659,6 @@ void mark_oom_victim(struct task_struct *tsk, struct oom_control *oc)
/* OOM killer might race with memcg OOM */
if (test_and_set_tsk_thread_flag(tsk, TIF_MEMDIE))
return;
- atomic_inc(&tsk->signal->oom_victims);
/*
* Since mark_oom_victim() is called from multiple threads,
* connect this mm to oom_mm_list only if not yet connected.
@@ -693,7 +692,6 @@ void exit_oom_victim(struct task_struct *tsk)
{
if (!test_and_clear_tsk_thread_flag(tsk, TIF_MEMDIE))
return;
- atomic_dec(&tsk->signal->oom_victims);
if (!atomic_dec_return(&oom_victims))
wake_up_all(&oom_victims_wait);
--
1.8.3.1
--
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