The patch titled
oom: swapoff tasks tweak
has been added to the -mm tree. Its filename is
oom-swapoff-tasks-tweak.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: oom: swapoff tasks tweak
From: Nick Piggin <npiggin@xxxxxxx>
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 <npiggin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/oom_kill.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff -puN mm/oom_kill.c~oom-swapoff-tasks-tweak mm/oom_kill.c
--- a/mm/oom_kill.c~oom-swapoff-tasks-tweak
+++ a/mm/oom_kill.c
@@ -60,6 +60,12 @@ unsigned long badness(struct task_struct
}
/*
+ * 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.
*/
points = mm->total_vm;
@@ -230,8 +236,6 @@ static struct task_struct *select_bad_pr
}
if (p->oomkilladj == OOM_DISABLE)
continue;
- if (p->flags & PF_SWAPOFF)
- return p;
points = badness(p, uptime.tv_sec);
if (points > *ppoints || !chosen) {
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
mm-vm_bug_on.patch
radix-tree-rcu-lockless-readside.patch
redo-radix-tree-fixes.patch
adix-tree-rcu-lockless-readside-update.patch
adix-tree-rcu-lockless-readside-fix-2.patch
update-some-mm-comments.patch
mm-remove_mapping-safeness.patch
mm-non-syncing-lock_page.patch
oom-use-unreclaimable-info.patch
oom-reclaim_mapped-on-oom.patch
cpuset-oom-panic-fix.patch
oom-cpuset-hint.patch
oom-handle-current-exiting.patch
oom-handle-oom_disable-exiting.patch
oom-swapoff-tasks-tweak.patch
oom-kthread-infinite-loop-fix.patch
oom-more-printk.patch
sched-force-sbin-init-off-isolated-cpus.patch
-
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