Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030516AbWJ3E0Q (ORCPT ); Sun, 29 Oct 2006 23:26:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030517AbWJ3E0Q (ORCPT ); Sun, 29 Oct 2006 23:26:16 -0500 Received: from omx2-ext.sgi.com ([192.48.171.19]:53430 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S1030516AbWJ3E0P (ORCPT ); Sun, 29 Oct 2006 23:26:15 -0500 Date: Mon, 30 Oct 2006 15:24:19 +1100 From: David Chinner To: Vasily Averin Cc: David Howells , Neil Brown , Jan Blunck , Olaf Hering , Balbir Singh , Kirill Korotaev , Linux Kernel Mailing List , devel@openvz.org, Andrew Morton Subject: Re: [PATCH 2.6.19-rc3] VFS: per-sb dentry lru list Message-ID: <20061030042419.GW8394166@melbourne.sgi.com> References: <4541BDE2.6050703@sw.ru> <45409DD5.7050306@sw.ru> <453F6D90.4060106@sw.ru> <453F58FB.4050407@sw.ru> <20792.1161784264@redhat.com> <21393.1161786209@redhat.com> <19898.1161869129@redhat.com> <22562.1161945769@redhat.com> <24249.1161951081@redhat.com> <4542123E.4030309@sw.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4542123E.4030309@sw.ru> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1001 Lines: 28 On Fri, Oct 27, 2006 at 06:05:50PM +0400, Vasily Averin wrote: > > The proposed fix prevents this issue by using per-sb dentry LRU list. It > provides very quickly search for the unused dentries for given super block thus > forcing shrinking always making good progress. We've been down this path before: http://marc.theaimsgroup.com/?l=linux-kernel&m=114861109717260&w=2 A lot of comments on per-sb unused dentry lists were made in the threads associated with the above. other solutions were found to the problem that the above patch addressed, but I don't think any of them have made it to mainline yet. You might want to have a bit of a read of these threads first... Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group - 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/