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oom: move OOM_DISABLE check from oom_kill_task to out_of_memory() 

Presently if oom_kill_allocating_task is enabled and current have
OOM_DISABLED, following printk in oom_kill_process is called twice.

    pr_err("%s: Kill process %d (%s) score %lu or sacrifice child\n",
            message, task_pid_nr(p), p->comm, points);

So, OOM_DISABLE check should be more early.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
KOSAKI Motohiro 2010-08-09 17:19:38 -07:00 committed by Linus Torvalds
parent 113e27f36d
commit a96cfd6e91
1 changed files with 3 additions and 2 deletions
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5
mm/oom_kill.c
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@ -424,7 +424,7 @@ static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order,
static int oom_kill_task(struct task_struct *p)
{
p = find_lock_task_mm(p);
if (!p || p->signal->oom_adj == OOM_DISABLE) {
if (!p) {
task_unlock(p);
return 1;
}
@ -686,7 +686,8 @@ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,
read_lock(&tasklist_lock);
if (sysctl_oom_kill_allocating_task &&
!oom_unkillable_task(current, NULL, nodemask)) {
!oom_unkillable_task(current, NULL, nodemask) &&
(current->signal->oom_adj != OOM_DISABLE)) {
/*
* oom_kill_process() needs tasklist_lock held. If it returns
* non-zero, current could not be killed so we must fallback to