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    SubjectRe: [patch 2/5] mm: fault vs invalidate/truncate race fix
    On Tue, Oct 10, 2006 at 11:00:42PM -0700, Andrew Morton wrote:
    > On Wed, 11 Oct 2006 15:39:22 +1000
    > Nick Piggin <nickpiggin@yahoo.com.au> wrote:
    >
    > > But I see that it does read twice. Do you want that behaviour retained? It
    > > seems like at this level it would be logical to read it once and let lower
    > > layers take care of any retries?
    >
    > argh. Linus has good-sounding reasons for retrying the pagefault-path's
    > read a single time, but I forget what they are. Something to do with
    > networked filesystems? (adds cc)

    While you're there, can anyone tell me why we want an external
    ptracer to be able to access pages that are outside i_size? I
    haven't removed the logic of course, but I'm curious about the
    history and usage of such a thing.


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