From af5b912435de32fbede08cee949429823ed49781 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Mon, 25 Sep 2006 23:31:31 -0700 Subject: [PATCH] [PATCH] oom: swapoff tasks tweak PF_SWAPOFF processes currently cause select_bad_process to return straight away. Instead, give them high priority, so we will kill them first, however we also first ensure no parallel OOM kills are happening at the same time. Signed-off-by: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/oom_kill.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 55a05f1ef7..f1aba7e7b7 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -59,6 +59,12 @@ unsigned long badness(struct task_struct *p, unsigned long uptime) return 0; } + /* + * swapoff can easily use up all memory, so kill those first. + */ + if (p->flags & PF_SWAPOFF) + return ULONG_MAX; + /* * The memory size of the process is the basis for the badness. */ @@ -230,8 +236,6 @@ static struct task_struct *select_bad_process(unsigned long *ppoints) } if (p->oomkilladj == OOM_DISABLE) continue; - if (p->flags & PF_SWAPOFF) - return p; points = badness(p, uptime.tv_sec); if (points > *ppoints || !chosen) { -- 2.39.5