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    SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
    Herbert Xu writes:

    > Can you find an actual atomic_read code snippet there that is
    > broken without the volatile modifier?

    There are some in arch-specific code, for example line 1073 of
    arch/mips/kernel/smtc.c. On mips, cpu_relax() is just barrier(), so
    the empty loop body is ok provided that atomic_read actually does the
    load each time around the loop.

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      Last update: 2007-08-17 07:27    [W:0.017 / U:0.220 seconds]
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