The patch titled
oom: don't kill unkillable children or siblings
has been added to the -mm tree. Its filename is
oom-dont-kill-unkillable-children-or-siblings.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: don't kill unkillable children or siblings
From: Nick Piggin <npiggin@xxxxxxx>
Abort the kill if any of our threads have OOM_DISABLE set. Having this
test here also prevents any OOM_DISABLE child of the "selected" process
from being killed.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/oom_kill.c | 13 +++++++++++--
1 files changed, 11 insertions(+), 2 deletions(-)
diff -puN mm/oom_kill.c~oom-dont-kill-unkillable-children-or-siblings mm/oom_kill.c
--- a/mm/oom_kill.c~oom-dont-kill-unkillable-children-or-siblings
+++ a/mm/oom_kill.c
@@ -312,15 +312,24 @@ static int oom_kill_task(struct task_str
if (mm == NULL)
return 1;
+ /*
+ * Don't kill the process if any threads are set to OOM_DISABLE
+ */
+ do_each_thread(g, q) {
+ if (q->mm == mm && p->oomkilladj == OOM_DISABLE)
+ return 1;
+ } while_each_thread(g, q);
+
__oom_kill_task(p, message);
+
/*
* kill all processes that share the ->mm (i.e. all threads),
* but are in a different thread group
*/
- do_each_thread(g, q)
+ do_each_thread(g, q) {
if (q->mm == mm && q->tgid != p->tgid)
__oom_kill_task(q, message);
- while_each_thread(g, q);
+ } while_each_thread(g, q);
return 0;
}
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
origin.patch
oom-dont-kill-unkillable-children-or-siblings.patch
mm-add-arch_alloc_page.patch
radix-tree-rcu-lockless-readside.patch
-
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