Re: [PATCH v3 0/2] dax, dm: stop requiring dax for device-mapper

[Mike Snitzer]

On Wed, Aug 02 2017 at  1:57pm -0400,
Dan Williams <dan.j.williams@xxxxxxxxx> wrote:

> Changes since v2 [1]:
> * rebase on -next to integrate with commit 273752c9ff03 "dm, dax: Make
>   sure dm_dax_flush() is called if device supports it" (kbuild robot)
> * fix CONFIG_DAX dependencies to upgrade CONFIG_DAX=m to CONFIG_DAX=y
>   (kbuild robot)
> 
> [1]: https://www.spinics.net/lists/kernel/msg2570522.html
> 
> ---
> 
> Bart points out that the DAX core is unconditionally enabled if
> device-mapper is enabled. Add some config machinery and some
> stub-static-inline routines to allow dax infrastructure to be deleted
> from device-mapper at compile time.
> 
> Since this depends on commit 273752c9ff03 that's already in -next, this
> should go through the device-mapper tree.

Commit 273752c9ff03eb83856601b2a3458218bb949e46 is upstream as of
v4.13-rc3 -- so no real need to have this go via linux-dm.git

That said, I don't mind picking it up once we are satisfied with the
implementation.  I'll start reviewing shortly.

Mike