Messages in this thread | | | Date | Thu, 02 Mar 2006 10:52:04 +0100 | From | Pierre Ossman <> | Subject | Re: How to map high memory for block io |
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Russell King wrote: > 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. > >
That wasn't what I meant. What I was referring to was disabling highmem altogether, the way that is done now through looking at the dma mask.
Rgds Pierre
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