Messages in this thread |  | | | From | Toshi Kani <> | | Subject | [PATCH v2 0/3] Support DAX for device-mapper dm-linear devices | | Date | Wed, 22 Jun 2016 17:54:51 -0600 |
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This patch-set adds DAX support to device-mapper dm-linear devices used by LVM. It works with LVM commands as follows: - Creation of a logical volume with all DAX capable devices (such as pmem) sets the logical volume DAX capable as well. - Once a logical volume is set to DAX capable, the volume may not be extended with non-DAX capable devices.
The direct_access interface is added to dm and dm-linear to map a request to a target device.
The patches replace v1 series at: http://git.kernel.org/cgit/linux/kernel/git/snitzer/linux.git/log/?h=wip
v2: - Fix issue with partitioning. - Change to add DAX flag to a request queue.
--- Toshi Kani (3): 1/3 block: add QUEUE_FLAG_DAX for devices to advertise their DAX support 2/3 dm: add infrastructure for DAX support 3/3 dm linear: add DAX support
--- drivers/block/brd.c | 4 +++- drivers/md/dm-linear.c | 23 ++++++++++++++++++++++- drivers/md/dm-table.c | 23 ++++++++++++++++++++--- drivers/md/dm.c | 36 +++++++++++++++++++++++++++++++++++- drivers/md/dm.h | 1 + drivers/nvdimm/pmem.c | 1 + drivers/s390/block/dcssblk.c | 1 + fs/block_dev.c | 5 +++-- include/linux/blkdev.h | 2 ++ include/linux/device-mapper.h | 16 ++++++++++++++++ 10 files changed, 104 insertions(+), 8 deletions(-)
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