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

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