diff options
author | Damien Le Moal <damien.lemoal@wdc.com> | 2019-12-20 16:58:23 +0900 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-01-02 21:53:31 -0500 |
commit | dbfc5626d9303ef611e70a531379e68754ab0feb (patch) | |
tree | f083c56d5e52c20e15ec17dfde090f0559f7891e /drivers/scsi | |
parent | 19aaa4072327f467ab82db7d1f0055675e2a4cd4 (diff) | |
download | linux-dbfc5626d9303ef611e70a531379e68754ab0feb.tar.bz2 |
scsi: sd_zbc: Rename sd_zbc_check_zones()
Now that the block layer implement zone checks on revalidate,
sd_zbc_check_zones() is reduced getting the zone size and verifying the
device capacity for device with RC_BASIS=0. Be clear about this by renaming
sd_zbc_check_zones() to sd_zbc_check_capacity() and updating the function
description and comments.
Link: https://lore.kernel.org/r/20191220075823.400072-3-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/sd_zbc.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index aca6367ced06..e4282bce5834 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -325,19 +325,21 @@ static int sd_zbc_check_zoned_characteristics(struct scsi_disk *sdkp, } /** - * sd_zbc_check_zones - Check the device capacity and zone size + * sd_zbc_check_capacity - Check the device capacity * @sdkp: Target disk + * @buf: command buffer + * @zblock: zone size in number of blocks * - * Check that the device capacity as reported by READ CAPACITY matches the - * max_lba value (plus one)of the report zones command reply. + * Get the device zone size and check that the device capacity as reported + * by READ CAPACITY matches the max_lba value (plus one) of the report zones + * command reply for devices with RC_BASIS == 0. * - * Returns the zone size in number of blocks upon success or an error code - * upon failure. + * Returns 0 upon success or an error code upon failure. */ -static int sd_zbc_check_zones(struct scsi_disk *sdkp, unsigned char *buf, - u32 *zblocks) +static int sd_zbc_check_capacity(struct scsi_disk *sdkp, unsigned char *buf, + u32 *zblocks) { - u64 zone_blocks = 0; + u64 zone_blocks; sector_t max_lba; unsigned char *rec; int ret; @@ -360,7 +362,7 @@ static int sd_zbc_check_zones(struct scsi_disk *sdkp, unsigned char *buf, } } - /* Parse REPORT ZONES header */ + /* Get the size of the first reported zone */ rec = buf + 64; zone_blocks = get_unaligned_be64(&rec[8]); if (logical_to_sectors(sdkp->device, zone_blocks) > UINT_MAX) { @@ -394,11 +396,8 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf) if (ret) goto err; - /* - * Check zone size: only devices with a constant zone size (except - * an eventual last runt zone) that is a power of 2 are supported. - */ - ret = sd_zbc_check_zones(sdkp, buf, &zone_blocks); + /* Check the device capacity reported by report zones */ + ret = sd_zbc_check_capacity(sdkp, buf, &zone_blocks); if (ret != 0) goto err; |