Dear Arnd Bergmann,

On Sat, 10 Jan 2015 21:40:07 +0100, Arnd Bergmann wrote:

Yes, but it may be better to stage this by first putting a patch
into stable that completely disables the broken coherent mapping,
and following up with another patch to bring the cohernet behavior
in sync with mainline once we are reasonably sure it's good.

Fine with me. I'll submit such patches next week. Though for the next
merge window, I'd like the proposed automatic I/O synchronization
barriers to be merged, so that we progressively make progress towards
the solution.

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com