Re: [patch] generic-pidhash-2.5.36-D4, BK-curr

[Oleg Drokin]

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