On Fri, May 21, 2010 at 12:42 PM, Felipe Contreras
<felipe.contreras@xxxxxxxxx> wrote:
> Although I'm still worried that VM_IO != write-combine, but I guess
> it's a safe assumption to do for now.
small update we missed:
The original code is ignoring VM_IO buffers as well:
static int memory_sync_vma(unsigned long start, u32 len,
enum dsp_flushtype ftype)
{
...
if (vma->vm_flags & (VM_IO | VM_PFNMAP))
return -EINVAL;
...
}
So the new code is actually behaving in exactly the same manner
(besides the error code, which is now -EFAULT and not -EINVAL).
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