Hi I have tested this patchset using fio and a simple script that is available at the URL below. Note testing was performed in a QEMU environment and not on real lightnvm block IO devices. https://github.com/OpenChannelSSD/lightnvm-hw (see the sanity.sh script in the sanity sub-folder). Tested-by: Stephen Bates <stephen.bates@xxxxxxxx> Cheers Stephen -----Original Message----- From: Matias Bjørling [mailto:m@xxxxxxxxxxx] Sent: Friday, June 5, 2015 6:54 AM To: hch@xxxxxxxxxxxxx; axboe@xxxxxx; linux-fsdevel@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-nvme@xxxxxxxxxxxxxxxxxxx Cc: javier@xxxxxxxxxxx; Stephen Bates; keith.busch@xxxxxxxxx; Matias Bjørling Subject: [PATCH v4 0/8] Support for Open-Channel SSDs Hi, This is an updated version based on the feedback from Christoph. Patch 1-2 are fixes and preparation for the nvme driver. The first fixes a flag bug. The second allows rq->special in nvme_submit_sync_cmd to be set and used. Patch 3 fixes capacity reporting in null_blk. Patch 4-8 introduces LightNVM and a simple target. Jens, the patches are on top of your for-next tree. Development and further information on LightNVM can be found at: https://github.com/OpenChannelSSD/linux Changes since v3: - Remove dependence 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. Matias Bjørling (8): nvme: add special param for nvme_submit_sync_cmd nvme: don't overwrite req->cmd_flags on sync cmd null_blk: wrong capacity when bs is not 512 bytes bio: Introduce LightNVM payload lightnvm: Support for Open-Channel SSDs lightnvm: RRPC target null_blk: LightNVM support nvme: LightNVM support Documentation/block/null_blk.txt | 8 + MAINTAINERS | 9 + drivers/Kconfig | 2 + drivers/Makefile | 2 + drivers/block/Makefile | 2 +- drivers/block/null_blk.c | 136 ++++- drivers/block/nvme-core.c | 134 ++++- drivers/block/nvme-lightnvm.c | 320 +++++++++++ drivers/block/nvme-scsi.c | 4 +- drivers/lightnvm/Kconfig | 26 + drivers/lightnvm/Makefile | 6 + drivers/lightnvm/core.c | 833 +++++++++++++++++++++++++++++ drivers/lightnvm/rrpc.c | 1088 ++++++++++++++++++++++++++++++++++++++ drivers/lightnvm/rrpc.h | 221 ++++++++ include/linux/bio.h | 9 + include/linux/blk_types.h | 4 +- include/linux/blkdev.h | 2 + include/linux/genhd.h | 3 + include/linux/lightnvm.h | 379 +++++++++++++ include/linux/nvme.h | 11 +- include/uapi/linux/nvme.h | 131 +++++ 21 files changed, 3300 insertions(+), 30 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/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 ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
