RE: Anticipatory prefaulting in the page fault handler V1

From: Luck, Tony
Date: Wed Dec 08 2004 - 13:36:42 EST

>We could use that as a way to switch of the preallocation. How
>expensive is that check?

If you already looked up the vma, then it is very cheap. Just
check for VM_RAND_READ in vma->vm_flags.

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