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Subject[PATCH v5 0/5] Support for Open-Channel SSDs
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These patches implement support for Open-Channel SSDs.

Applies against axboe's linux-block/for-4.3/drivers.

Any feedback is greatly appreciated.

Changes since v4:
- Remove gendisk->nvm dependency
- Remove device driver rq private field dependency.
- Update submission and completion. The flow is now
Target -> Block Manager -> Device Driver, replacing callbacks in
device driver.
- Abstracted out the block manager into its own module. Other block
managers can now be implemented. For example to support fully
host-based SSDs.
- No longer exposes the device driver gendisk to user-space.
- Management is moved into /sys/modules/lnvm/parameters/configure_debug

Changes since v3:

- Remove dependency on REQ_NVM_GC
- Refactor nvme integration to use nvme_submit_sync_cmd for
internal commands.
- Fix race condition bug on multiple threads on RRPC target.
- Rename sysfs entry under the block device from nvm to lightnvm.
The configuration is found in /sys/block/*/lightnvm/

Changes since v2:

Feedback from Paul Bolle:
- Fix license to GPLv2, documentation, compilation.
Feedback from Keith Busch:
- nvme: Move lightnvm out and into nvme-lightnvm.c.
- nvme: Set controller css on lightnvm command set.
- nvme: Remove OACS.
Feedback from Christoph Hellwig:
- lightnvm: Move out of block layer into /drivers/lightnvm/core.c
- lightnvm: refactor request->phys_sector into device drivers.
- lightnvm: refactor prep/unprep into device drivers.
- lightnvm: move nvm_dev from request_queue to gendisk.

New
- Bad block table support (From Javier).
- Update maintainers file.

Changes since v1:

- Splitted LightNVM into two parts. A get/put interface for flash
blocks and the respective targets that implement flash translation
layer logic.
- Updated the patches according to the LightNVM specification changes.
- Added interface to add/remove targets for a block device.

Thanks to Jens Axboe, Christoph Hellwig, Keith Busch, Javier Gonzalez
and Jesper Madsen for discussions and contributions.

Matias Bjørling (5):
lightnvm: Support for Open-Channel SSDs
rrpc: RRPC target
bm_hb: Hybrid Open-Channel SSD block manager
null_blk: LightNVM support
nvme: LightNVM support

Documentation/block/null_blk.txt | 8 +
MAINTAINERS | 8 +
drivers/Kconfig | 2 +
drivers/Makefile | 5 +
drivers/block/Makefile | 2 +-
drivers/block/null_blk.c | 138 ++++-
drivers/block/nvme-core.c | 22 +-
drivers/block/nvme-lightnvm.c | 504 ++++++++++++++++
drivers/lightnvm/Kconfig | 33 ++
drivers/lightnvm/Makefile | 7 +
drivers/lightnvm/bm_hb.c | 379 ++++++++++++
drivers/lightnvm/bm_hb.h | 31 +
drivers/lightnvm/core.c | 598 +++++++++++++++++++
drivers/lightnvm/rrpc.c | 1190 ++++++++++++++++++++++++++++++++++++++
drivers/lightnvm/rrpc.h | 220 +++++++
include/linux/lightnvm.h | 393 +++++++++++++
include/linux/nvme.h | 6 +
include/uapi/linux/nvme.h | 3 +
18 files changed, 3539 insertions(+), 10 deletions(-)
create mode 100644 drivers/block/nvme-lightnvm.c
create mode 100644 drivers/lightnvm/Kconfig
create mode 100644 drivers/lightnvm/Makefile
create mode 100644 drivers/lightnvm/bm_hb.c
create mode 100644 drivers/lightnvm/bm_hb.h
create mode 100644 drivers/lightnvm/core.c
create mode 100644 drivers/lightnvm/rrpc.c
create mode 100644 drivers/lightnvm/rrpc.h
create mode 100644 include/linux/lightnvm.h

--
2.1.4



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