On Fri, 13 Jul 2007 21:20:33 -0400 Mathieu Desnoyers <[email protected]> wrote:
> Powerpc - Include pagemap.h in asm/powerpc/tlb.h
>
> Fixes this powerpc build error in 2.6.22-rc6-mm1 for powerpc 64 :
>
> In file included from include2/asm/tlb.h:60,
> from /home/compudj/git/linux-2.6-lttng/arch/powerpc/mm/init_64.
> c:56:
> /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h: In function 'tlb_fl
> ush_mmu':
> /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h:76: error: implicit
> declaration of function 'release_pages'
> /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h: In function 'tlb_re
> move_page':
> /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h:105: error: implicit
> declaration of function 'page_cache_release'
You have some wordwrapping going on there.
> make[2]: *** [arch/powerpc/mm/init_64.o] Error 1
>
> release_pages is declared in linux/pagemap.h, but cannot be included in
> linux/swap.h because of a sparc related comment:
>
> /* only sparc can not include linux/pagemap.h in this file
> * so leave page_cache_release and release_pages undeclared... */
> #define free_page_and_swap_cache(page) \
> page_cache_release(page)
> #define free_pages_and_swap_cache(pages, nr) \
> release_pages((pages), (nr), 0);
It's always a worry when this happens. What change made us need this
inclusion? How come you're hitting it but I (and test.kernel.org, at least)
did not? How come so few other architectures include pagemap.h from
asm/tlb.h? Why do header files get into such a mess?
> Signed-off-by: Mathieu Desnoyers <[email protected]>
> CC: [email protected]
> CC: Paul Mackerras <[email protected]>
> ---
> include/asm-powerpc/tlb.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> Index: linux-2.6-lttng/include/asm-powerpc/tlb.h
> ===================================================================
> --- linux-2.6-lttng.orig/include/asm-powerpc/tlb.h 2007-07-13 11:30:54.000000000 -0400
> +++ linux-2.6-lttng/include/asm-powerpc/tlb.h 2007-07-13 11:31:22.000000000 -0400
> @@ -23,6 +23,8 @@
> #include <asm/mmu.h>
> #endif
>
> +#include <linux/pagemap.h>
> +
> struct mmu_gather;
>
Oh well. I queued it up for someone else to worry over ;)
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