| From: |
| Hannes Reinecke <hare@suse.de> |
| To: |
| Jens Axboe <axboe@fb.com> |
| Subject: |
| [PATCH 0/9] block/scsi: Implement SMR drive support |
| Date: |
| Mon, 4 Apr 2016 12:00:11 +0200 |
| Message-ID: |
| <1459764020-126038-1-git-send-email-hare@suse.de> |
| Cc: |
| linux-block@vger.kernel.org, "Martin K. Petersen" <martin.petersen@oracle.com>, Christoph Hellwig <hch@lst.de>, Shaun Tancheff <shaun.tancheff@seagate.com>, Damien Le Moal <damien.lemoal@hgst.com>, linux-scsi@vger.kernel.org, Sathya Prakash <sathya.prakash@broadcom.com>, Hannes Reinecke <hare@suse.de> |
| Archive‑link: | |
Article |
Hi all,
here's a patchset implementing SMR (shingled magnetic recording)
device support for the block and SCSI layer.
There are two main parts to it:
- mapping the 'RESET WRITE POINTER' command to the 'discard' functionality.
The 'RESET WRITE POINTER' operation is pretty close to the existing
'discard' functionality with the 'discard_zeroes_blocks' bit set.
So I've added a new 'reset_wp' provisioning mode for this.
- Adding a 'zone' pointer to the request queue. This pointer holds an
RB-tree with the zone information, which can be used by other layers
to access the write pointer.
This is the third part of a larger patchset for ZAC/ZBC support;
it requires the scsi trace fixes queued for in mkp/4.7/scsi-queue and
the patchsets 'libata: SATL update' and 'libata: ZAC support' I've
posted earlier.
The full patchset can be found at:
git.kernel.org/hare/scsi-devel/h/zbc.v3
As usual, comments and reviews are welcome.
Hannes Reinecke (9):
blk-sysfs: Add 'chunk_sectors' to sysfs attributes
block: update chunk_sectors in blk_stack_limits()
sd: configure ZBC devices
sd: Implement new RESET_WP provisioning mode
block: Implement support for zoned block devices
block: Add 'zoned' sysfs queue attribute
block: Introduce BLKPREP_DONE
block: Add 'BLK_MQ_RQ_QUEUE_DONE' return value
sd: Implement support for ZBC devices
block/Kconfig | 9 ++
block/Makefile | 1 +
block/blk-core.c | 11 +-
block/blk-mq.c | 1 +
block/blk-settings.c | 3 +
block/blk-sysfs.c | 74 +++++++++
block/blk-zoned.c | 70 +++++++++
drivers/scsi/Kconfig | 8 +
drivers/scsi/Makefile | 1 +
drivers/scsi/scsi_lib.c | 4 +
drivers/scsi/sd.c | 267 ++++++++++++++++++++++++++++---
drivers/scsi/sd.h | 44 ++++++
drivers/scsi/sd_zbc.c | 411 ++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/blk-mq.h | 1 +
include/linux/blkdev.h | 48 ++++++
15 files changed, 933 insertions(+), 20 deletions(-)
create mode 100644 block/blk-zoned.c
create mode 100644 drivers/scsi/sd_zbc.c
--
1.8.5.6
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