From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262408AbULCWFB (ORCPT ); Fri, 3 Dec 2004 17:05:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262403AbULCWEo (ORCPT ); Fri, 3 Dec 2004 17:04:44 -0500 Received: from smtp.istop.com ([66.11.167.126]:16272 "EHLO smtp.istop.com") by vger.kernel.org with ESMTP id S262408AbULCWC5 (ORCPT ); Fri, 3 Dec 2004 17:02:57 -0500 From: Daniel Phillips To: Avi Kivity Subject: Re: [PATCH] [Request for inclusion] Filesystem in Userspace Date: Fri, 3 Dec 2004 17:07:45 -0500 User-Agent: KMail/1.7 Cc: Miklos Szeredi , alan@lxorguk.ukuu.org.uk, torvalds@osdl.org, hbryan@us.ibm.com, akpm@osdl.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, pavel@ucw.cz References: <41ACE816.50104@argo.co.il> In-Reply-To: <41ACE816.50104@argo.co.il> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200412031707.46114.phillips@istop.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Avi, On Tuesday 30 November 2004 16:37, Avi Kivity wrote: > The situation with userspace filesystems is: > > some process allocates memory, blocking on kswapd as memory is full > kswapd calls userspace filesystem to free memory > userspace filesystem calls kernel, which allocates memory and blocks > on kswapd > eventually all processes in the system block on kswapd > > I have observed (and fixed) this on a real system. What was your fix? Regards, Daniel