[dm-devel] [PATCH] dm-writecache

[Mikulas Patocka]

On Mon, 12 Mar 2018, Christoph Hellwig wrote:

> On Thu, Mar 08, 2018 at 09:08:32AM -0800, Dan Williams wrote:
> > I had the same feedback, and Mikulas sent this useful enhancement to
> > the memcpy_flushcache API:
> > 
> >     https://patchwork.kernel.org/patch/10217655/
> > 
> > ...it's in my queue to either push through -tip or add it to the next
> > libnvdimm pull request for 4.17-rc1.
> 
> So lets rebase this submission on top of that.

I already did and the patch that you criticized is based on the top of 
that.

I've found out that memcpy_flushcache performs better on x86 and dax_flush 
performs betetr on ARM64, so the code has two flushing strategies that are 
switched with preprocessor condition.

Mikulas