[dm-devel] [PATCH 03/11] block: introduce BIO_ZONE_WRITE_LOCKED bio flag

[Christoph Hellwig]

On Wed, May 19, 2021 at 11:55:21AM +0900, Damien Le Moal wrote:
> Introduce the BIO flag BIO_ZONE_WRITE_LOCKED to indicate that a BIO owns
> the write lock of the zone it is targeting. This is the counterpart of
> the struct request flag RQF_ZONE_WRITE_LOCKED. This new BIO flag is
> reserved for now for zone write locking control for device mapper
> targets exposing a zoned block device.

So normally we try to use a REQ_* flag instead of duplicate BIO_ and
RQF ones.  But I think this is a special case as the flag never gets
propagated.  Can you document that in the commit log?

With that:

Reviewed-by: Christoph Hellwig <hch at lst.de>