Return-Path: Received: from mail-wm0-f66.google.com ([74.125.82.66]:33117 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752814AbdAFOLR (ORCPT ); Fri, 6 Jan 2017 09:11:17 -0500 From: Michal Hocko To: , Cc: Andrew Morton , Dave Chinner , djwong@kernel.org, "Theodore Ts'o" , Chris Mason , David Sterba , Jan Kara , ceph-devel@vger.kernel.org, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, logfs@logfs.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-mtd@lists.infradead.org, reiserfs-devel@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, linux-f2fs-devel@lists.sourceforge.net, linux-afs@lists.infradead.org, LKML , Brian Foster , Michal Hocko , "Peter Zijlstra (Intel)" Subject: [PATCH 0/8 v3] scope GFP_NOFS api Date: Fri, 6 Jan 2017 15:10:59 +0100 Message-Id: <20170106141107.23953-1-mhocko@kernel.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi, I have posted the previous version here [1]. Since then I've added some reviewed bys and fixed some minor issues. I've dropped patch 2 [2] based on Dave's request [3]. I agree that this can be done later and doing all at once. I still think that __GFP_NOLOCKDEP should be added by this series to make the further development easier. There didn't seem to be any real objections and so I think we should go and merge this and build further on top. I would like to get rid of all explicit GFP_NOFS usage in ext4 code. I have something half baked already and will send it later on. I also hope we can get further with the xfs as well. I haven't heard anything from btrfs or other filesystems guys which is a bit unfortunate but I do not want to wait for them to much longer, they can join the effort later on. The patchset is based on next-20170106 Diffstat says fs/ext4/acl.c | 6 +++--- fs/ext4/extents.c | 8 ++++---- fs/ext4/resize.c | 4 ++-- fs/ext4/xattr.c | 4 ++-- fs/jbd2/journal.c | 7 +++++++ fs/jbd2/transaction.c | 11 +++++++++++ fs/xfs/kmem.c | 10 +++++----- fs/xfs/kmem.h | 2 +- fs/xfs/libxfs/xfs_btree.c | 2 +- fs/xfs/xfs_aops.c | 6 +++--- fs/xfs/xfs_buf.c | 8 ++++---- fs/xfs/xfs_trans.c | 12 ++++++------ include/linux/gfp.h | 18 +++++++++++++++++- include/linux/jbd2.h | 2 ++ include/linux/sched.h | 32 ++++++++++++++++++++++++++------ kernel/locking/lockdep.c | 6 +++++- lib/radix-tree.c | 2 ++ mm/page_alloc.c | 8 +++++--- mm/vmscan.c | 6 +++--- 19 files changed, 109 insertions(+), 45 deletions(-) Shortlog: Michal Hocko (8): lockdep: allow to disable reclaim lockup detection xfs: abstract PF_FSTRANS to PF_MEMALLOC_NOFS mm: introduce memalloc_nofs_{save,restore} API xfs: use memalloc_nofs_{save,restore} instead of memalloc_noio* jbd2: mark the transaction context with the scope GFP_NOFS context jbd2: make the whole kjournald2 kthread NOFS safe Revert "ext4: avoid deadlocks in the writeback path by using sb_getblk_gfp" Revert "ext4: fix wrong gfp type under transaction" [1] http://lkml.kernel.org/r/20161215140715.12732-1-mhocko@kernel.org [2] http://lkml.kernel.org/r/20161215140715.12732-3-mhocko@kernel.org [3] http://lkml.kernel.org/r/20161219212413.GN4326@dastard