# Re: \[PATCH 07/12\] bdi: remove BDI\_CAP\_CGROUP\_WRITEBACK

- From: David Sterba \<hidden\>
- Date: 2020-09-16 09:29:33 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2020/09/188810
- Thread: https://ratatoskr.run/linux-block/2020/09/188389/t.md

```text
On Thu, Sep 10, 2020 at 04:48:27PM +0200, Christoph Hellwig wrote:
> Just checking SB_I_CGROUPWB for cgroup writeback support is enough.
> Either the file system allocates its own bdi (e.g. btrfs), in which case
> it is known to support cgroup writeback, or the bdi comes from the block
> layer, which always supports cgroup writeback.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Johannes Thumshirn <redacted>

Acked-by: David Sterba <dsterba@suse.com>
```