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    SubjectRe: page fault scalability patch V12 [0/7]: Overview and performance tests
    On Sun, 12 Dec 2004, William Lee Irwin III wrote:

    > On Sun, Dec 12, 2004 at 09:33:11AM +0000, Hugh Dickins wrote:
    > > Oh, hold on, isn't handle_mm_fault's pmd without page_table_lock
    > > similarly racy, in both the 64-on-32 cases, and on architectures
    > > which have a more complex pmd_t (sparc, m68k, h8300)? Sigh.
    > yes.

    Those may fall back to use the page_table_lock for individual operations
    that cannot be realized in an atomic way.

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