From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752212AbbCYLTF (ORCPT ); Wed, 25 Mar 2015 07:19:05 -0400 Received: from cantor2.suse.de ([195.135.220.15]:46798 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750819AbbCYLTC (ORCPT ); Wed, 25 Mar 2015 07:19:02 -0400 Date: Wed, 25 Mar 2015 11:18:58 +0000 From: Mel Gorman To: Josef Bacik Cc: linux-fsdevel@vger.kernel.org, david@fromorbit.com, viro@zeniv.linux.org.uk, jack@suse.cz, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/9] Sync and VFS scalability improvements Message-ID: <20150325111858.GA5599@suse.de> References: <1426016724-23912-1-git-send-email-jbacik@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <1426016724-23912-1-git-send-email-jbacik@fb.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 10, 2015 at 03:45:15PM -0400, Josef Bacik wrote: > These are patches that Dave Chinner wrote two years ago that are still very much > needed today. I recently ran into a problem where I had millions of inodes that > needed to be evicted at unmount time and it soft locked up the box and kept any > other file system from doing work. These patches fix this problem by breaking > the inode_sb_list_lock into per-sb, and then converting the per sb inode list > into a list_lru for better scalability. > I'm not reviewing this series, I just heard it mentioned at LSF/MM and again on a DAX thread and am taking a quick glance out of curiousity. FWIW, I saw the lockup-on-umount warning every time I ran Dave's xfsrepair workload when unmounting after running fsmark. I didn't report it because Dave mentioned at Vault that it was a known problem and someone was looking at it already. -- Mel Gorman SUSE Labs