From: Damien Le Moal <damien.lemoal@wdc.com>
To: linux-scsi@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>, Bart Van Assche <Bart.VanAssche@wdc.com>
Subject: [PATCH V6 03/14] scsi: sd_zbc: Rearrange code
Date: Mon, 2 Oct 2017 16:15:24 +0900 [thread overview]
Message-ID: <20171002071535.8007-4-damien.lemoal@wdc.com> (raw)
In-Reply-To: <20171002071535.8007-1-damien.lemoal@wdc.com>
Rearrange sd_zbc_setup() to include use_16_for_rw and use_10_for_rw
assignments and move the calculation of sdkp->zone_shift together
with the assignment of the verified zone_blocks value in
sd_zbc_check_zone_size().
No functional change is introduced by this patch.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <Bart.VanAssche@wdc.com>
---
drivers/scsi/sd_zbc.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index 023f705ae235..7dbaf920679e 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -584,6 +584,7 @@ static int sd_zbc_check_zone_size(struct scsi_disk *sdkp)
}
sdkp->zone_blocks = zone_blocks;
+ sdkp->zone_shift = ilog2(zone_blocks);
return 0;
}
@@ -591,10 +592,13 @@ static int sd_zbc_check_zone_size(struct scsi_disk *sdkp)
static int sd_zbc_setup(struct scsi_disk *sdkp)
{
+ /* READ16/WRITE16 is mandatory for ZBC disks */
+ sdkp->device->use_16_for_rw = 1;
+ sdkp->device->use_10_for_rw = 0;
+
/* chunk_sectors indicates the zone size */
blk_queue_chunk_sectors(sdkp->disk->queue,
logical_to_sectors(sdkp->device, sdkp->zone_blocks));
- sdkp->zone_shift = ilog2(sdkp->zone_blocks);
sdkp->nr_zones = sdkp->capacity >> sdkp->zone_shift;
if (sdkp->capacity & (sdkp->zone_blocks - 1))
sdkp->nr_zones++;
@@ -657,10 +661,6 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf)
if (ret)
goto err;
- /* READ16/WRITE16 is mandatory for ZBC disks */
- sdkp->device->use_16_for_rw = 1;
- sdkp->device->use_10_for_rw = 0;
-
return 0;
err:
--
2.13.6
next prev parent reply other threads:[~2017-10-02 7:15 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-02 7:15 [PATCH V6 00/14] scsi-mq support for ZBC disks Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 01/14] scsi: sd_zbc: Move ZBC declarations to scsi_proto.h Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 02/14] scsi: sd_zbc: Fix comments and indentation Damien Le Moal
2017-10-02 16:50 ` Bart Van Assche
2017-10-02 7:15 ` Damien Le Moal [this message]
2017-10-02 7:15 ` [PATCH V6 04/14] scsi: sd_zbc: Use well defined macros Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 05/14] scsi: sd_zbc: Fix sd_zbc_read_zoned_characteristics() Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 06/14] block: Add zoned block device information to request queue Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 07/14] scsi: sd_zbc: Initialize device request queue zoned data Damien Le Moal
2017-10-02 16:57 ` Bart Van Assche
2017-10-02 7:15 ` [PATCH V6 08/14] scsi: sd_zbc: Limit zone write locking to sequential zones Damien Le Moal
2017-10-02 17:00 ` Bart Van Assche
2017-10-02 7:15 ` [PATCH V6 09/14] scsi: sd_zbc: Disable zone write locking with scsi-mq Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 10/14] block: mq-deadline: Add zoned block device data Damien Le Moal
2017-10-02 23:06 ` Bart Van Assche
2017-10-02 7:15 ` [PATCH V6 11/14] blokc: mq-deadline: Introduce dispatch helpers Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 12/14] block: mq-deadline: Introduce zone locking support Damien Le Moal
2017-10-02 23:12 ` Bart Van Assche
2017-10-02 7:15 ` [PATCH V6 13/14] block: mq-deadline: Limit write request dispatch for zoned block devices Damien Le Moal
2017-10-02 23:44 ` Bart Van Assche
2017-10-03 0:19 ` Damien Le Moal
2017-10-03 20:56 ` Bart Van Assche
2017-10-03 23:03 ` Damien Le Moal
2017-10-02 7:15 ` [PATCH V6 14/14] block: do not set mq default scheduler Damien Le Moal
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