Re: [PATCH 21/26] block: Do not check zone type in blk_check_zone_append()

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On 2/2/24 15:30, Damien Le Moal wrote:
Zone append operations are only allowed to target sequential write
required zones. blk_check_zone_append() uses bio_zone_is_seq() to check
this. However, this check is not necessary because:
1) For NVMe ZNS namespace devices, only sequential write required zones
    exist, making the zone type check useless.
2) For null_blk, the driver will fail the request anyway, thus notifying
    the user that a conventional zone was targeted.
3) For all other zoned devices, zone append is now emulated using zone
    write plugging, which checks that a zone append operation does not
    target a conventional zone.

In preparation for the removal of zone write locking and its
conventional zone bitmap (used by bio_zone_is_seq()), remove the
bio_zone_is_seq() call from blk_check_zone_append().

Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
  block/blk-core.c | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

Reviewed-by: Hannes Reinecke <hare@xxxxxxx>


Dr. Hannes Reinecke                Kernel Storage Architect
hare@xxxxxxx                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Ivo Totev, Andrew McDonald,
Werner Knoblich

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