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[PATCH] oom: handle oom_disable exiting

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Having the oomkilladj == OOM_DISABLE check before the releasing check means
that oomkilladj == OOM_DISABLE tasks exiting will not stop the OOM killer.

Moving the test down will give the desired behaviour.  Also: it will allow
them to "OOM-kill" themselves if they are exiting.  As per the previous patch,
this is required to prevent OOM killer deadlocks (and they don't actually get
killed, because they're already exiting -- they're simply allowed access to
memory reserves).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Nick Piggin 2006-09-25 23:31:30 -07:00 committed by Linus Torvalds
parent 50ec3bbffb
commit 4a3ede107e
1 changed files with 2 additions and 2 deletions
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4
mm/oom_kill.c
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@ -204,8 +204,6 @@ static struct task_struct *select_bad_process(unsigned long *ppoints)
/* skip the init task with pid == 1 */
if (p->pid == 1)
continue;
if (p->oomkilladj == OOM_DISABLE)
continue;
/*
* This is in the process of releasing memory so wait for it
@ -230,6 +228,8 @@ static struct task_struct *select_bad_process(unsigned long *ppoints)
}
return ERR_PTR(-1UL);
}
if (p->oomkilladj == OOM_DISABLE)
continue;
if (p->flags & PF_SWAPOFF)
return p;