Hi,
As per Christoph's request this patch incorporates Hannes' cache of zone
information.
This approach is to have REQ_OP_ZONE_REPORT return data in the same
format regardless of the availability of the zone cache. So if the
is kernel being built with or without BLK_DEV_ZONED [and SCSI_ZBC]
users of blkdev_issue_zone_report() and/or REQ_OP_ZONE_REPORT bio's
will have a consistent data format to digest.
Additionally it seems reasonable to allow the REQ_OP_ZONE_* to
be able to indicate if the command *must* be delivered to the
device [and update the zone cache] accordingly. Here REQ_META is
being used as REQ_FUA can be dropped causing sd_done to be skipped.
Rather than special case the current code I chose to pick an otherwise
non-applicable flag.
This series is based off of Linus's v4.8-rc2 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 posted 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
...
Patches for util-linux can be found here:
g...@github.com:stancheff/util-linux.git v2.28.1+biof
https://github.com/stancheff/util-linux/tree/v2.28.1%2Bbiof
This patch is available here:
https://github.com/stancheff/linux/tree/v4.8-rc2%2Bbiof.v9
g...@github.com:stancheff/linux.git v4.8-rc2+biof.v9
v2:
- Fully integrated bio <-> zone cache [<-> device]
- Added discard -> write same for conventional zones.
- Merged disparate constants into a canonical set.
Shaun Tancheff (4):
Enable support for Seagate HostAware drives (testing).
On Discard either do Reset WP or Write Same
Merge ZBC constants
Integrate ZBC command requests with zone cache.
block/blk-lib.c | 16 -
drivers/scsi/sd.c | 111 +++--
drivers/scsi/sd.h | 49 ++-
drivers/scsi/sd_zbc.c | 904 ++++++++++++++++++++++++++++++++++----
include/linux/blkdev.h | 22 +-
include/scsi/scsi_proto.h | 17 -
include/uapi/linux/blkzoned_api.h | 167 ++++---
7 files changed, 1032 insertions(+), 254 deletions(-)
--
2.9.3
