Re: [GIT PULL] Block drivers for 3.3-rc

[Jens Axboe <axboe@kernel.dk>]

On 2012-01-15 13:44, Christoph Hellwig wrote:
> On Sun, Jan 15, 2012 at 01:22:05PM +0100, Jens Axboe wrote:
>> Good point, I had forgotten about the ordered writes, I believe the rest
>> of the items have been handled. The driver/hw, as it stands, does not
>> reorder writes and it doesn't have a write back cache. So it should
>> actually be safe. Any acked write is stable. Sam, correct me if I'm
>> wrong.
> 
> I tried to get that out of the micron folks a while ago but don't
> remember getting an answer.  If that's actually tree please remove
> the (misnamed) barrier argument from mtip_hw_submit_io, and maybe add
> a comment that the current hardware can't have a volatile write cache.

Sure, will do post pull to not mess up the current pull request.

> Btw, does the hardware claim to have writeback caches in the ATA
> IDENTIFY words related to it?

I'll let Sam answer this one and the question above, it's better if it
comes from the source.

-- 
Jens Axboe