Re: [PATCH v2 0/3] Enable cached zone report

["Darrick J. Wong" <djwong@kernel.org>]

On Fri, Dec 19, 2025 at 06:38:07PM +0900, Damien Le Moal wrote:
> Enable cached zone report to speed up mkfs and repair on a zoned block
> device (e.g. an SMR disk). Cached zone report support was introduced in
> the kernel with version 6.19-rc1.  This was co-developped with
> Christoph.

Just out of curiosity, do you see any xfsprogs build problems with
BLK_ZONE_COND_ACTIVE if the kernel headers are from 6.18?

> Darrick,
> 
> It may be cleaner to have a common report zones helper instead of
> repating the same ioctl pattern in mkfs/xfs_mkfs.c and repair/zoned.c.
> However, I am not sure where to place such helper. In libxfs/ or in
> libfrog/ ? Please advise.

libfrog/, please.

--D

> Thanks !
> 
> Changes from v1:
>  - Fix erroneous handling of ioctl(BLKREPORTZONEV2) error to correctly
>    fallback to the regular ioctl(BLKREPORTZONE) if the kernel does not
>    support BLKREPORTZONEV2.
> 
> Damien Le Moal (3):
>   libxfs: define BLKREPORTZONEV2 if the kernel does not provide it
>   mkfs: use cached report zone
>   repair: use cached report zone
> 
>  libxfs/topology.h | 8 ++++++++
>  mkfs/xfs_mkfs.c   | 7 ++++++-
>  repair/zoned.c    | 7 ++++++-
>  3 files changed, 20 insertions(+), 2 deletions(-)
> 
> -- 
> 2.52.0
> 
>