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    SubjectRe: [patch] generic-pidhash-2.5.36-D4, BK-curr
    Hello!

    On Thu, Sep 19, 2002 at 04:54:46AM +0200, Ingo Molnar wrote:

    > - unified kernel/pid.c and kernel/idtag.c into kernel/pid.c.

    > + /*
    > + * Free the page if someone raced with us
    > + * installing it:
    > + */
    > + if (cmpxchg(&map->page, NULL, page))
    > + free_page(page);

    Note that this piece breaks compilation for every arch that does not
    have cmpxchg implementation.
    This is the case with x86 (with CONFIG_X86_CMPXCHG undefined, e.g. i386),
    ARM, CRIS, m68k, MIPS, MIPS64, PARISC, s390, SH, sparc32, UML (for x86).

    Bye,
    Oleg
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