Hi Jens and Keith, If the patches look good to you, would you pick them up through your tree? The common way to expose a storage device is to export it through the gendisk structure, which takes care of handling the visibility lifetime of the device to user-space and carries device driver and block layer specific sysfs entries. For LightNVM, no gendisk is exposed, which hides these entries. This patchset enables LightNVM to expose a subset of the gendisk entries by implementing a new non-gendisk device that only exposes the sysfs entries that are relevant to the device driver and LightNVM. For example /mq and the NVMe sysfs entries. The new non-gendisk exposes itself in place of the original gendisk. Thus, a gendisk device exposed through /sys/class/nvme/nvme0n1, will still be exposed through the same directory, although only with the /mq, lightnvm, and nvme specific entries. The LightNVM storage device can be found through sysfs by searching for devices that has the "lightnvm" dev type. v2: - Updated "expose gennvm target type" to expose its own kobject, which pblk and others can hook into. - Fixed missing disk_name in null_blk patch on lightnvm device Thanks, Matias Matias Bjørling (4): nvme: refactor namespaces to support non-gendisk devices null_blk: refactor to support non-gendisk devices blk-mq: register device instead of disk lightnvm: let drivers control the lifetime of nvm_dev Simon A. F. Lund (2): lightnvm: expose device geometry through sysfs lightnvm: expose gennvm target type through sysfs block/blk-mq-sysfs.c | 13 ++- block/blk-sysfs.c | 4 +- drivers/block/null_blk.c | 128 +++++++++++++++++----------- drivers/lightnvm/Makefile | 2 +- drivers/lightnvm/core.c | 52 +++++------- drivers/lightnvm/gennvm.c | 112 +++++++++++++++++++++---- drivers/lightnvm/lightnvm.h | 35 ++++++++ drivers/lightnvm/sysfs.c | 195 +++++++++++++++++++++++++++++++++++++++++++ drivers/md/dm.c | 2 +- drivers/nvme/host/core.c | 165 ++++++++++++++++++++---------------- drivers/nvme/host/lightnvm.c | 29 ++++++- drivers/nvme/host/nvme.h | 26 ++++-- include/linux/blk-mq.h | 4 +- include/linux/lightnvm.h | 28 +++++-- 14 files changed, 597 insertions(+), 198 deletions(-) create mode 100644 drivers/lightnvm/lightnvm.h create mode 100644 drivers/lightnvm/sysfs.c -- 2.1.4 -- 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
