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SubjectRe: VM_RESERVED [was Re: mapping user space buffer to kernel address space]


On Fri, 20 Oct 2000, Jeff Garzik wrote:
>
> If I understand your patch, I should call vma_reserve(), and then
> completely remove my no-op swapout(). Correct?

Note that I dislike "wrapper.h", and I just removed that part.

I don't think it's any clearer to write "vma_reserve(vma)" than it is to
just say "vma->vm_flags |= VM_RESERVE".
But yes, add that line and remove the swapout, and you should be golden -
no unnecessary faults (well, it won't pre-fault, of course) and no trouble
with calculating locked pages.

Linus

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