From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 9 Dec 2004 22:02:15 -0800 From: William Lee Irwin III Subject: Re: [PATCH] Remove OOM killer from try_to_free_pages / all_unreclaimable braindamage Message-ID: <20041210060215.GK2714@holomorphy.com> References: <20041106152903.GA3851@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Hugh Dickins Cc: Andrea Arcangeli , Nick Piggin , Jesse Barnes , Marcelo Tosatti , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Sat, 6 Nov 2004, Andrea Arcangeli wrote: >> btw, PF_MEMDIE has always been racy in the way it's being set, so it can >> corrupt the p->flags, but the race window is very small to trigger it >> (and even if it triggers, it probably wouldn't be fatal). That's why I >> don't use PF_MEMDIE in 2.4-aa. On Sat, Nov 06, 2004 at 04:21:33PM +0000, Hugh Dickins wrote: > I expect so, yes, the PF_ flags don't have proper locking. Those > places which set or clear PF_MEMALLOC are more likely to hit races, > but last time I went there I don't think there was a real serious problem. I posted a testcase that triggers a panic with the PF_MEMALLOC race. -- wli -- 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: aart@kvack.org