Re: [PATCH 1/5] freepgt: free_pgtables use vma list

From: Nick Piggin (nickpiggin_at_yahoo.com.au)
Date: 03/22/05

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    To: "David S. Miller" <davem@davemloft.net>
Date:	Tue, 22 Mar 2005 15:14:54 +1100

    On Mon, 2005-03-21 at 15:02 -0800, David S. Miller wrote:

    > Anyways, there's the full analysis, what do you make
    > of this Hugh? :-)

    Impressive, and my name isn't even Hugh.

    Question, Dave: flush_tlb_pgtables after Hugh's patch is also
    possibly not being called with enough range to cover all page
    tables that have been freed.

    For example, you may have a single page (start,end) address range
    to free, but if this is enclosed by a large enough (floor,ceiling)
    then it may free an entire pgd entry.

    I assume the intention of the API would be to provide the full
    pgd width in that case?

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