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scsi: sd_zbc: Set zone limits before revalidating zones

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In sd_zbc_revalidate_zones(), execute blk_queue_chunk_sectors() and
blk_queue_max_zone_append_sectors() to respectively set a ZBC device
zone size and maximum zone append sector limit before executing
blk_revalidate_disk_zones(). This is to allow the block layer zone
reavlidation to check these device characteristics prior to checking all
zones of the device.

Since blk_queue_max_zone_append_sectors() already caps the device
maximum zone append limit to the zone size and to the maximum command
size, the max_append value passed to blk_queue_max_zone_append_sectors()
is simplified to the maximum number of segments times the number of
sectors per page.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230703024812.76778-2-dlemoal@kernel.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Damien Le Moal 2023-07-03 11:48:08 +09:00 committed by Martin K. Petersen
parent 24033d71cc
commit f79846ca2f
1 changed files with 5 additions and 7 deletions
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12
drivers/scsi/sd_zbc.c
View file

@ -831,7 +831,6 @@ int sd_zbc_revalidate_zones(struct scsi_disk *sdkp)
struct request_queue *q = disk->queue;
u32 zone_blocks = sdkp->early_zone_info.zone_blocks;
unsigned int nr_zones = sdkp->early_zone_info.nr_zones;
u32 max_append;
int ret = 0;
unsigned int flags;
@ -876,6 +875,11 @@ int sd_zbc_revalidate_zones(struct scsi_disk *sdkp)
goto unlock;
}
blk_queue_chunk_sectors(q,
logical_to_sectors(sdkp->device, zone_blocks));
blk_queue_max_zone_append_sectors(q,
q->limits.max_segments << PAGE_SECTORS_SHIFT);
ret = blk_revalidate_disk_zones(disk, sd_zbc_revalidate_zones_cb);
memalloc_noio_restore(flags);
@ -888,12 +892,6 @@ int sd_zbc_revalidate_zones(struct scsi_disk *sdkp)
goto unlock;
}
max_append = min_t(u32, logical_to_sectors(sdkp->device, zone_blocks),
q->limits.max_segments << PAGE_SECTORS_SHIFT);
max_append = min_t(u32, max_append, queue_max_hw_sectors(q));
blk_queue_max_zone_append_sectors(q, max_append);
sd_zbc_print_zones(sdkp);
unlock: