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    SubjectRe: [PATCH 2.5.63] Teach page_mapped about the anon flag

    --On Monday, March 03, 2003 13:35:39 -0800 Andrew Morton <akpm@digeo.com>
    wrote:

    > We do need a patch I think. page_mapped() is still assuming that an
    > all-bits-zero atomic_t corresponds to a zero-value atomic_t.
    >
    > This does appear to be true for all supported architectures, but it's a
    > bit grubby.

    If that's ever not true then we need extra code to initialize/rezero that
    field, since we assume it's zero on alloc, and the pte_chain code also
    assumes it's zero for a new page.

    Dave

    ======================================================================
    Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
    dmccr@us.ibm.com T/L 678-3059

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