Re: [PATCH 05/19] btrfs: disable direct IO in HMZONED mode

[Josef Bacik]

On Fri, Jun 07, 2019 at 10:10:11PM +0900, Naohiro Aota wrote:
> Direct write I/Os can be directed at existing extents that have already
> been written. Such write requests are prohibited on host-managed zoned
> block devices. So disable direct IO support for a volume with HMZONED mode
> enabled.
> 

That's only if we're nocow, so seems like you only need to disable DIO into
nocow regions with hmzoned?  Thanks,

Josef