diff options
| author | Bart Van Assche <bvanassche@acm.org> | 2022-04-21 11:30:18 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-04-25 23:23:04 -0400 |
| commit | 628617be8968e575ca0a0637fb227f8a990cb2f7 (patch) | |
| tree | 43039f716218ecdae5abe7ed973794fa77409de9 /drivers/scsi/sd.h | |
| parent | 43af5da09efb8abe450ec859d3063adeb7d1eb54 (diff) | |
scsi: sd: sd_zbc: Introduce struct zoned_disk_info
Deriving the meaning of the nr_zones, rev_nr_zones, zone_blocks and
rev_zone_blocks member variables requires careful analysis of the source
code. Make the meaning of these member variables easier to understand by
introducing struct zoned_disk_info.
Link: https://lore.kernel.org/r/20220421183023.3462291-5-bvanassche@acm.org
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/sd.h')
| -rw-r--r-- | drivers/scsi/sd.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 4849cbe771a7..47434f905b0a 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -67,6 +67,20 @@ enum { SD_ZERO_WS10_UNMAP, /* Use WRITE SAME(10) with UNMAP */ }; +/** + * struct zoned_disk_info - Specific properties of a ZBC SCSI device. + * @nr_zones: number of zones. + * @zone_blocks: number of logical blocks per zone. + * + * This data structure holds the ZBC SCSI device properties that are retrieved + * twice: a first time before the gendisk capacity is known and a second time + * after the gendisk capacity is known. + */ +struct zoned_disk_info { + u32 nr_zones; + u32 zone_blocks; +}; + struct scsi_disk { struct scsi_device *device; @@ -78,10 +92,10 @@ struct scsi_disk { struct gendisk *disk; struct opal_dev *opal_dev; #ifdef CONFIG_BLK_DEV_ZONED - u32 nr_zones; - u32 rev_nr_zones; - u32 zone_blocks; - u32 rev_zone_blocks; + /* Updated during revalidation before the gendisk capacity is known. */ + struct zoned_disk_info early_zone_info; + /* Updated during revalidation after the gendisk capacity is known. */ + struct zoned_disk_info zone_info; u32 zones_optimal_open; u32 zones_optimal_nonseq; u32 zones_max_open; |