[PATCH v3 0/6] Enable cached zone report

[Damien Le Moal <dlemoal@kernel.org>]

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.

Patch 1 and 2 are a couple of simple fixes/cleanups.
Patch 3 intorduces the new xfrog_report_zones() helper function, which
is used in patch 4 and 5 for mkfs and repair respectively.
Finally, patch 6 modifies xfrog_report_zones() to enable cached report
zones.

Changes from v2:
 - Complete rework of the series to make the zone reporting code common
   in libfrog
 - Added patch 1 and 2 as small cleanups/improvements.

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 (6):
  libxfs: add missing forward declaration in xfs_zones.h
  mkfs: remove unnecessary return value affectation
  libfrog: introduce xfrog_report_zones
  mkfs: use xfrog_report_zones()
  repair: use xfrog_report_zones()
  libfrog: enable cached report zones

 libfrog/Makefile   |  6 ++++--
 libfrog/zones.c    | 51 ++++++++++++++++++++++++++++++++++++++++++++++
 libfrog/zones.h    | 22 ++++++++++++++++++++
 libxfs/xfs_zones.c |  3 ++-
 libxfs/xfs_zones.h |  1 +
 mkfs/xfs_mkfs.c    | 39 +++++++++--------------------------
 repair/zoned.c     | 29 ++++++++------------------
 7 files changed, 98 insertions(+), 53 deletions(-)
 create mode 100644 libfrog/zones.c
 create mode 100644 libfrog/zones.h

-- 
2.52.0