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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