From mboxrd@z Thu Jan 1 00:00:00 1970 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: owner-linux-mm@kvack.org Return-Path: 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 List-ID: > 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, 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