Re: [PATCH] radeon: use vmalloc instead of kmalloc

[Peter Zijlstra]

On Tue, 2009-06-23 at 21:42 +1000, Dave Airlie wrote:
> On Tue, Jun 23, 2009 at 9:35 PM, Peter Zijlstra<peterz@xxxxxxxxxxxxx> wrote:
> > On Mon, 2009-06-22 at 19:26 +0200, Jerome Glisse wrote:
> >> We don't need to allocated contiguous pages in cs codepath
> >> so use vmalloc instead.
> >
> > Best would be to not require >PAGE_SIZE allocations at all of course.
> 
> It gets messy when you have copy from user and spinlocks, it would be nice
> to just parse the userspace PAGE_SIZE at a time, but it would mean dropping
> a lock we probably need to hold.

Can't you play tricks with refcounts?
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