Re: mapping user space buffer to kernel address space

[Linus Torvalds]

On Thu, 19 Oct 2000, Jeff Garzik wrote:
>
> I stole the last two lines from drivers/char/drm/vm.c, which might need
> to be fixed up also..  He uses the vm_flags above and nevers calls
> get_page, at the very least.

The DRM code does

        atomic_inc(&virt_to_page(physical)->count);

which is basically what get_page() expands into. The DRM code looks ugly,
but correct, at least as far as this thing is concerned.

But you're right about the mmap vm_flags/vm_file things.

                Linus

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