From: Nick Piggin Date: Tue, 26 Sep 2006 06:31:30 +0000 (-0700) Subject: [PATCH] oom: handle oom_disable exiting X-Git-Tag: v2.6.19-rc1~1186 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=4a3ede107e422a0c53d28024b0aa902ca22a8768;p=linux-2.6-omap-h63xx.git [PATCH] oom: handle oom_disable exiting 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 0131bae2a16..55a05f1ef76 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -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;