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    SubjectRe: [PATCH][RFC][0/4] InfiniBand userspace verbs implementation
    Andrew Morton wrote:

    > Precisely. That's why I suggested that we have an alternative vma->vm_flag
    > bit which behaves in a similar manner to VM_LOCKED (say, VM_LOCKED_KERNEL),
    > only userspace cannot alter it.

    How about calling it VM_PINNED? That way, we can define

    Locked - won't be swapped to disk, but can be moved around in memory
    Pinned - won't be swapped to disk or moved around in memory

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