On Mon, Jun 13 2016 at 6:21pm -0400, Toshi Kani <toshi.kani@xxxxxxx> wrote: > 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. > > - Patch 1-2 introduce GENHD_FL_DAX flag to indicate DAX capability. > - Patch 3-4 add direct_access functions to dm and dm-linear. > - Patch 5-6 set GENHD_FL_DAX to dm when all targets are DAX capable. > > --- > Toshi Kani (6): > 1/6 genhd: Add GENHD_FL_DAX to gendisk flags > 2/6 block: Check GENHD_FL_DAX for DAX capability > 3/6 dm: Add dm_blk_direct_access() for mapped device > 4/6 dm-linear: Add linear_direct_access() > 5/6 dm, dm-linear: Add dax_supported to dm_target > 6/6 dm: Enable DAX support for mapper device Thanks a lot for doing this. I recently added it to my TODO so your patches come at a great time. I'll try to get to reviewing/testing your work by the end of this week. Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
