Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758710AbXJEKcm (ORCPT ); Fri, 5 Oct 2007 06:32:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752107AbXJEKcf (ORCPT ); Fri, 5 Oct 2007 06:32:35 -0400 Received: from mail-gw2.sa.eol.hu ([212.108.200.109]:50539 "EHLO mail-gw2.sa.eol.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751918AbXJEKce (ORCPT ); Fri, 5 Oct 2007 06:32:34 -0400 To: a.p.zijlstra@chello.nl CC: akpm@linux-foundation.org, wfg@mail.ustc.edu.cn, linux-mm@kvack.org, linux-kernel@vger.kernel.org In-reply-to: (message from Miklos Szeredi on Fri, 05 Oct 2007 12:27:05 +0200) Subject: Re: [PATCH] remove throttle_vm_writeout() References: <20071004145640.18ced770.akpm@linux-foundation.org> <20071004160941.e0c0c7e5.akpm@linux-foundation.org> <20071004164801.d8478727.akpm@linux-foundation.org> <20071004174851.b34a3220.akpm@linux-foundation.org> <1191572520.22357.42.camel@twins> <1191577623.22357.69.camel@twins> Message-Id: From: Miklos Szeredi Date: Fri, 05 Oct 2007 12:32:08 +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 661 Lines: 16 > I think that's an improvement in all respects. > > However it still does not generally address the deadlock scenario: if > there's a small DMA zone, and fuse manages to put all of those pages > under writeout, then there's trouble. And the only way to solve that AFAICS, is to make sure fuse never uses more than e.g. 50% of _any_ zone for page cache. And that may need some tweaking in the allocator... Miklos - 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/