From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Message-Id: <20061012120129.29671.3288.sendpatchset@linux.site> In-Reply-To: <20061012120102.29671.31163.sendpatchset@linux.site> References: <20061012120102.29671.31163.sendpatchset@linux.site> Subject: [patch 3/5] oom: less memdie Date: Thu, 12 Oct 2006 16:10:01 +0200 (CEST) Sender: owner-linux-mm@kvack.org Return-Path: To: Linux Memory Management Cc: Linux Kernel , Nick Piggin , Andrew Morton List-ID: 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 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org