# Re: \[PATCH 2/2\] ext4: implement cgroup writeback support

- From: Artem Bityutskiy \<dedekind1@gmail.com\>
- Date: 2015-09-23 13:50:53 
- List: cgroups
- Page: https://ratatoskr.run/cgroups/2015/09/99768
- Thread: https://ratatoskr.run/linux-fsdevel/2015/07/97843/t.md

```text
On Wed, 2015-09-23 at 15:49 +0300, Artem Bityutskiy wrote:
> On Tue, 2015-07-21 at 23:56 -0400, Theodore Ts'o wrote:
> > > v2: Updated for MS_CGROUPWB -> SB_I_CGROUPWB.
> > > 
> > > Signed-off-by: Tejun Heo <tj@kernel.org>
> > > Cc: "Theodore Ts'o" <tytso@mit.edu>
> > > Cc: Andreas Dilger <adilger.kernel@dilger.ca>
> > > Cc: <redacted>
> > 
> > Thanks, applied.
> 
> Hi, this patch introduces a regression - a major one, I'd say.
> 
> Symptoms: copy a bunch of file, run sync, then run 'reboot', and
> after
> you boot up the copied files are corrupted. So basically the user
> -visible symptom is that 'sync' does not work.

Just FYI, this is the issue I briefly reported last Fri:

https://lkml.org/lkml/2015/9/18/640

Artem.
```