Re: How to map high memory for block io

Russell King
2006-03-02T09:42:01Z

On Thu, Mar 02, 2006 at 08:26:50AM +0100, Pierre Ossman wrote:
> Russell King wrote:
> > Okay, I've hit this same problem (but in a slightly different way) with
> > mmci.c. The way I'm proposing to fix this for mmci is to introduce a
> > new capability which says "clustering is supported by this driver."
>
> This will decrease performance more than necessary for drivers that can
> do clustering, just not in highmem. So what about another flag that says
> "highmem is supported by this driver"?

I think you're asking Jens that question - I know of no way to tell
the block layer that clustering is fine for normal but not highmem.

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core