Re: [PATCH 10/17] mm: rmap preparation for remap_anon_pages

On Mon, Oct 6, 2014 at 12:41 PM, Andrea Arcangeli [off-list ref] wrote:

Of course if somebody has better ideas on how to resolve an anonymous
userfault they're welcome.

So I'd *much* rather have a "write()" style interface (ie _copying_
bytes from user space into a newly allocated page that gets mapped)
than a "remap page" style interface

remapping anonymous pages involves page table games that really aren't
necessarily a good idea, and tlb invalidates for the old page etc.
Just don't do it.

           Linus

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