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[PATCH] mm: nommu use compound pages

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Now that compound page handling is properly fixed in the VM, move nommu
over to using compound pages rather than rolling their own refcounting.

nommu vm page refcounting is broken anyway, but there is no need to have
divergent code in the core VM now, nor when it gets fixed.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: David Howells <dhowells@redhat.com>

(Needs testing, please).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Nick Piggin 2006-03-22 00:08:34 -08:00 • committed by Linus Torvalds
parent 0f8053a509
commit 84097518d1
6 changed files with 11 additions and 28 deletions
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4
include/linux/mm.h
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@ -327,11 +327,7 @@ static inline void get_page(struct page *page)
void put_page(struct page *page);
#ifdef CONFIG_MMU
void split_page(struct page *page, unsigned int order);
#else
static inline void split_page(struct page *page, unsigned int order) {}
#endif
/*
* Multiple processes may "see" the same page. E.g. for untouched