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    SubjectRe: [PATCH v6 02/10] x86, mpx: add MPX specific mmap interface
    On 06/23/2014 01:06 PM, Andy Lutomirski wrote:
    > Can the new vm_operation "name" be use for this? The magic "always
    > written to core dumps" feature might need to be reconsidered.

    One thing I'd like to avoid is an MPX vma getting merged with a non-MPX
    vma. I don't see any code to prevent two VMAs with different
    vm_ops->names from getting merged. That seems like a bit of a design
    oversight for ->name. Right?

    Thinking out loud a bit... There are also some more complicated but more
    performant cleanup mechanisms that I'd like to go after in the future.
    Given a page, we might want to figure out if it is an MPX page or not.
    I wonder if we'll ever collide with some other user of vm_ops->name. It
    looks fairly narrowly used at the moment, but would this keep us from
    putting these pages on, say, a tmpfs mount? Doesn't look that way at
    the moment.


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