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SubjectRe: [PATCHSET v2] cgroup, writeback, btrfs: make sure btrfs issues metadata IOs from the root cgroup
On Wed 29-11-17 13:38:26, Chris Mason wrote:
> On 11/29/2017 12:05 PM, Tejun Heo wrote:
> >On Wed, Nov 29, 2017 at 09:03:30AM -0800, Tejun Heo wrote:
> >>Hello,
> >>
> >>On Wed, Nov 29, 2017 at 05:56:08PM +0100, Jan Kara wrote:
> >>>What has happened with this patch set?
> >>
> >>No idea. cc'ing Chris directly. Chris, if the patchset looks good,
> >>can you please route them through the btrfs tree?
> >
> >lol looking at the patchset again, I'm not sure that's obviously the
> >right tree. It can either be cgroup, block or btrfs. If no one
> >objects, I'll just route them through cgroup.
>
> We'll have to coordinate a bit during the next merge window but I don't have
> a problem with these going in through cgroup. Dave does this sound good to
> you?

Also I was wondering about another thing: How does this play with Josef's
series for metadata writeback (Metadata specific accouting and dirty
writeout)? Would the per-inode selection of cgroup writeback still be
needed when Josef's series is applied since metadata writeback then won't
be associated with any particular mapping anymore?

Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR

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