Hi,
As per Christoph's request this patch incorporates Hannes' cache of zone
information.
The approach is to provide the same blkreport format as would be done
when BLK_DEV_ZONED is not enabled via an ioctl.
Reset WP, Open, and Close zone will update the zone cache.
Using blkdev_issue_zone_report() from within the kernel the report
will still come directly from the media. I am considering an option
for the ioctl to force pulling the zone report from the media when
BLK_DEV_ZONED is enabled and using the resulting information to
refresh the zone cache. It is not clear that this is useful so I
have not included that in this patch.
The follow-on patch just enables the zone cache to be populated
using a Seagate's HostAware drive.
This series is based off of Linus current tip post (f38d2e5313f0af..)
and builds on top of the previous series of block layer support:
Add ioctl to issue ZBC/ZAC commands via block layer
Add bio/request flags to issue ZBC/ZAC commands
as well as the series post by Hannes'
sd_zbc: Fix handling of ZBC read after write pointer
sd: Limit messages for ZBC disks capacity change
sd: Implement support for ZBC devices
sd: Implement new RESET_WP provisioning mode
sd: configure ZBC devices
...
Cc: Hannes Reinecke <hare@xxxxxxx>
Cc: Damien Le Moal <damien.lemoal@xxxxxxxx>
Shaun Tancheff (2):
bio/zbc support for zone cache
Enable support for Seagate HostAware drives (testing).
block/blk-lib.c | 3 +-
block/blk-zoned.c | 190 +++++++++++++++++++++++++++++++++++++++++++++++++
block/ioctl.c | 39 +++++++---
drivers/scsi/sd.c | 22 +++---
drivers/scsi/sd.h | 20 ++++--
drivers/scsi/sd_zbc.c | 150 ++++++++++++++++++++++++++++++++------
include/linux/blkdev.h | 14 +++-
7 files changed, 389 insertions(+), 49 deletions(-)
--
2.8.1
sd_zbc: Fix handling of ZBC read after write pointer
sd: Limit messages for ZBC disks capacity change
sd: Implement support for ZBC devices
sd: Implement new RESET_WP provisioning mode
sd: configure ZBC devices
block: Add 'BLK_MQ_RQ_QUEUE_DONE' return value
block: Introduce BLKPREP_DONE
block: Add 'zoned' sysfs queue attribute
block: Implement support for zoned block devices
block: update chunk_sectors in blk_stack_limits()
blk-sysfs: Add 'chunk_sectors' to sysfs attributes
sd: configure ZBC devices
block: Add 'BLK_MQ_RQ_QUEUE_DONE' return value
block: Introduce BLKPREP_DONE
block: Add 'zoned' sysfs queue attribute
block: Implement support for zoned block devices
block: update chunk_sectors in blk_stack_limits()
blk-sysfs: Add 'chunk_sectors' to sysfs attributes
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