Re: 2.6.9-rc1-mm4 sparc reiser4 build broken - undefined atomic_sub_and_test

[William Lee Irwin III]

On Sun, Sep 12, 2004 at 03:12:35AM -0700, Paul Jackson wrote:
> The final link fails with:
>   fs/built-in.o(.text+0x58618): In function `end_io_handler':
>   : undefined reference to `atomic_sub_and_test'
>   make[1]: *** [arch/sparc/boot/image] Error 1
> The macro 'atomic_sub_and_test' is defined for more or less every other
> arch, in various include/asm-*/atomic.h files, but not defined for
> sparc.
> This macro is used in:
> 	fs/reiser4/flush_queue.c:
>                if (atomic_sub_and_test(bio->bi_vcnt, &fq->nr_submitted))
> If I disable the config items:
>   CONFIG_REISER4_FS=y
>   CONFIG_REISER4_LARGE_KEY=y
> then it builds ok (with the bogus #else removed from cachefs.h, as
> already reported on lkml).

I'm loath to add this for the sake of reiser4; I rather favor the use of
portable constructs.


-- wli
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