As Host Aware drives are becoming available we would like to be able to make use of such drives. This series is also intended to be suitable for use by Host Managed drives. The following series is hopefully a reasonable start at adding such support. ZAC/ZBC drives add new commands. Some of this support is already in progress by Hannes Reinecke <hare@xxxxxxx>. This patch finishes up a couple of scsi <-> ata translations. These patches will be re-worked or dropped in favor of Hannes' next release. With the ZAC support in place adding some additional flags to struct bio to identify the new drive requests (Report zones, Open/Close/Reset zones). With the bio support in place there are two new users added. The first user is an ioctl the second user is a device mapper target. The user space tools for the ioctl is intended to be acceptable for inclusion by util-linux. Initial patches for 2.20.1 and 2.21.1 can be found here: https://github.com/Seagate/ZDM-Device-Mapper/tree/master/patches/util-linux Please consider the new device mapper target, as an RFC. Patch "Limit bio_endio recursion" is based on an older patch that was not picked up. It is not strictly necessary but it does reduce stack usage, especially for badly behaved DM targets that return DM_MAPIO_REQUEUE too frequently. Patch "Use PID to seed Stream Id" depends on: https://lkml.kernel.org/r/1457107853-8689-1-git-send-email-axboe@xxxxxx Patch "Block Zoned Control for Userspace" is a hold over for user space tools that have not been updated to use the new block ioctl. The patch will be dropped when zdm-tools is updated and sd-tools is replaced with util-linux. This series is based on Linus v4.5 kernel. Code is also available on github here: https://github.com/Seagate/ZDM-Device-Mapper And a fork of Linus kernel with ZDM branches is available here: https://github.com/stancheff/linux Shaun Tancheff (12): Add ZBC <-> ZAC xlat support for report, open, close, reset, finish ata-scsi: Translate ReportZones result to big endian BUG: Losing bits on request.cmd_flags Add bio/request flags for using ZBC/ZAC commands Add ioctl to issue ZBC/ZAC commands via block layer Add ata pass-through path for ZAC commands. ZDM: New DM target 'zoned' RAID 4/5/6: Indicate parity blocks as 'META' RAID 4/5/6: Fine-grained TRIM enable for ZDM Limit bio_endio recursion Stream Id: Use PID to seed Stream Id construction. Block Zoned Control for Userspace Documentation/device-mapper/zoned.txt | 75 + MAINTAINERS | 16 + block/Kconfig | 12 + block/Makefile | 1 + block/bio.c | 57 +- block/blk-core.c | 17 +- block/blk-lib.c | 120 + block/blk-merge.c | 2 +- block/blk-mq.c | 2 +- block/blk-settings.c | 1 + block/blk-sysfs.c | 11 + block/blk-zoned-ctrl.c | 642 +++ block/cfq-iosched.c | 2 +- block/elevator.c | 4 +- block/ioctl.c | 142 + block/scsi_ioctl.c | 6 + drivers/ata/libata-eh.c | 2 + drivers/ata/libata-scsi.c | 238 ++ drivers/md/Kconfig | 11 + drivers/md/Makefile | 1 + drivers/md/dm-zoned.c | 2549 ++++++++++++ drivers/md/dm-zoned.h | 715 ++++ drivers/md/libzoned.c | 7149 +++++++++++++++++++++++++++++++++ drivers/md/raid5.c | 6 +- drivers/scsi/sd.c | 186 +- drivers/scsi/sd.h | 1 + fs/ext4/file.c | 1 + fs/xfs/xfs_aops.c | 2 +- fs/xfs/xfs_file.c | 1 + include/linux/ata.h | 18 + include/linux/blk-zoned-ctrl.h | 51 + include/linux/blk_types.h | 23 +- include/linux/blkdev.h | 22 +- include/linux/blkzoned_api.h | 25 + include/linux/elevator.h | 4 +- include/linux/fs.h | 10 +- include/scsi/scsi_device.h | 1 + include/scsi/scsi_proto.h | 14 + include/trace/events/libata.h | 2 + include/uapi/linux/Kbuild | 2 + include/uapi/linux/blk-zoned-ctrl.h | 70 + include/uapi/linux/blkzoned_api.h | 221 + include/uapi/linux/fs.h | 1 + 43 files changed, 12405 insertions(+), 31 deletions(-) create mode 100644 Documentation/device-mapper/zoned.txt create mode 100644 block/blk-zoned-ctrl.c create mode 100644 drivers/md/dm-zoned.c create mode 100644 drivers/md/dm-zoned.h create mode 100644 drivers/md/libzoned.c create mode 100644 include/linux/blk-zoned-ctrl.h create mode 100644 include/linux/blkzoned_api.h create mode 100644 include/uapi/linux/blk-zoned-ctrl.h create mode 100644 include/uapi/linux/blkzoned_api.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
