Messages in this thread | | | Date | Thu, 19 Oct 2000 15:43:36 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: mapping user space buffer to kernel address space |
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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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