From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753549AbbCJTrg (ORCPT ); Tue, 10 Mar 2015 15:47:36 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:51371 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753123AbbCJTrc (ORCPT ); Tue, 10 Mar 2015 15:47:32 -0400 From: Josef Bacik To: , , , , Subject: [PATCH 0/9] Sync and VFS scalability improvements Date: Tue, 10 Mar 2015 15:45:15 -0400 Message-ID: <1426016724-23912-1-git-send-email-jbacik@fb.com> X-Mailer: git-send-email 1.9.3 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.54.13] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.13.68,1.0.33,0.0.0000 definitions=2015-03-10_07:2015-03-10,2015-03-10,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 kscore.is_bulkscore=0 kscore.compositescore=0 circleOfTrustscore=0 compositescore=0.925924926977281 suspectscore=0 recipient_domain_to_sender_totalscore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 rbsscore=0.925924926977281 recipient_to_sender_totalscore=0 recipient_domain_to_sender_domain_totalscore=0 spamscore=0 recipient_to_sender_domain_totalscore=0 urlsuspectscore=0.925924926977281 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1503100201 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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've also pulled forward Dave's sync scalability patches which still seem pretty relevant. I had to fix a couple of these to bring them forward but I touched very little and I've preserved the authorship of everything. I added the Reviewed-by's that were there when the patches were originally submitted. I've run this through xfstests on btrfs and xfs and verified that everything seems to be working. If you are interested the original submission can be found here http://lwn.net/Articles/561569/ Finally the last patch is from me and this fixes the softlockup problems I was seeing on unmount with a large amount of inodes that needed to be evicted. Thanks, Josef