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    SubjectRe: Page table cache problem
       Date: Sun, 26 Jul 1998 13:45:13 -0700
    From: Bill Hawes <whawes@transmeta.com>

    I think the correct way to fix this is to directly call
    check_pgt_cache() after unloading the page tables.

    No, the correct fix is to see if the count is > the high water mark,
    and directly free the page if so, not to expensively call the
    check_pgt_cache() function.

    It is a bug, but I wonder when it would actually happen in real
    operation. I can run "swap-stress" which eats %99.5 of all memory and
    swap, and has a stupid spin loop to guarentee the idle thread never
    runs, and get fork failures, what have I proven?

    Later,
    David S. Miller
    davem@dm.cobaltmicro.com

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