The patch titled
oom: less memdie
has been added to the -mm tree. Its filename is
oom-less-memdie.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: less memdie
From: Nick Piggin <npiggin@xxxxxxx>
Don't cause all threads in all other thread groups to gain TIF_MEMDIE
otherwise we'll get a thundering herd eating our memory reserve. This may not
be the optimal scheme, but it fits our policy of allowing just one TIF_MEMDIE
in the system at once.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/oom_kill.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff -puN mm/oom_kill.c~oom-less-memdie mm/oom_kill.c
--- a/mm/oom_kill.c~oom-less-memdie
+++ a/mm/oom_kill.c
@@ -322,11 +322,12 @@ static int oom_kill_task(struct task_str
/*
* kill all processes that share the ->mm (i.e. all threads),
- * but are in a different thread group.
+ * but are in a different thread group. Don't let them have access
+ * to memory reserves though, otherwise we might deplete all memory.
*/
do_each_thread(g, q) {
if (q->mm == mm && q->tgid != p->tgid)
- __oom_kill_task(q, 1);
+ force_sig(SIGKILL, p);
} 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
oom-cleanup-messages.patch
oom-less-memdie.patch
mm-incorrect-vm_fault_oom-returns-from-drivers.patch
mm-add-arch_alloc_page.patch
radix-tree-rcu-lockless-readside.patch
-
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