linux-kernel - [PATCHSET v2 block/for-4.2/writeback] cgroup, writeback: misc updates for cgroup writeback support

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Message-Id: <1434494912-31043-1-git-send-email-tj@kernel.org>
Date:	Tue, 16 Jun 2015 18:48:29 -0400
From:	Tejun Heo <tj@...nel.org>
To:	axboe@...nel.dk
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	lizefan@...wei.com, cgroups@...r.kernel.org, hannes@...xchg.org,
	kernel-team@...com
Subject: [PATCHSET v2 block/for-4.2/writeback] cgroup, writeback: misc updates for cgroup writeback support

Hello,

This is v2.  The only change from the last take[L] is

* super_block->s_iflags added and MS_CGROUPWB replaced with
  SB_I_CGROUPWB as suggested by Christoph and Jan.

This patchset contains the following assorted updates for the cgroup
writeback support.

 0001-writeback-do-foreign-inode-detection-iff-cgroup-writ.patch
 0002-vfs-writeback-replace-FS_CGROUP_WRITEBACK-with-SB_I_.patch
 0003-writeback-blkio-add-documentation-for-cgroup-writeba.patch

0001 fixes a bug where clear FS_CGROUP_WRITEBACK flag didn't fully
disable cgroup writeback support if the filesystem code uses
wbc_init_bio() and wbc_account_io().

0002 replaces FS_CGROUP_WRITEBACK with SB_I_CGROUPWB so that cgroup
writeback support can be enabled / disabled per superblock rather than
filesystem type.

0003 updates blkio documentation with information on cgroup writeback
support.

This patchset is on top of block/for-4.2/writeback and available in
the following git branch.

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-cgroup-writeback-updates

diffstat follows.  Thanks.

 Documentation/cgroups/blkio-controller.txt |   83 +++++++++++++++++++++++++++--
 fs/ext2/super.c                            |    4 -
 fs/fs-writeback.c                          |   16 ++++-
 fs/namespace.c                             |    2 
 include/linux/backing-dev.h                |    2 
 include/linux/fs.h                         |    1 
 include/uapi/linux/fs.h                    |    1 
 7 files changed, 96 insertions(+), 13 deletions(-)

--
tejun

[L] http://lkml.kernel.org/g/1434146254-26220-1-git-send-email-tj@kernel.org
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