Messages in this thread Patch in this message | | | From | Nick Piggin <> | Subject | [patch 3/5] oom: less memdie | Date | Thu, 12 Oct 2006 16:10:01 +0200 (CEST) |
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Don't cause all threads in all other thread groups to gain TIF_MEMDIE otherwise we'll get a thundering herd eating out 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@suse.de>
Index: linux-2.6/mm/oom_kill.c =================================================================== --- linux-2.6.orig/mm/oom_kill.c +++ linux-2.6/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; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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