-Werror-implicit-function-declaration made it finally into mainline,
thats ok.

But now CONFIG_SWAP=n fails to compile, at least on powerpc:

include/asm-generic/tlb.h: In function 'tlb_flush_mmu':
include/asm-generic/tlb.h:76: error: implicit declaration of function 'release_pages'
include/asm-generic/tlb.h: In function 'tlb_remove_page':
include/asm-generic/tlb.h:105: error: implicit declaration of function 'page_cache_release'

tlb_flush_mmu() calls free_pages_and_swap_cache(),
which calls free_pages_and_swap_cache() in linux/swap.h

A commend was added to the free_pages_and_swap_cache define the last
time this issue came up. sparc can not use linux/pagemap.h in swap.h.
http://lkml.org/lkml/2005/7/8/140
http://lkml.org/lkml/2005/8/6/72

So, how can this be finally resolved?
Does CONFIG_SWAP=n compile anywhere right now?

google found a workaround(?), akpm queued it up: http://lkml.org/lkml/2007/7/19/14
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