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

On Tue, Jun 16, 2015 at 06:48:29PM -0400, Tejun Heo wrote:

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.

Jens, this is late in the merge window but these three patches are low
risk and would be nice to make available for -rc1 so that future
filesystem cgroup writeback support doesn't have to pull in cgroup
branch.  What do you think?

Thanks.

-- 
tejun