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authorNick Piggin <npiggin@suse.de>2006-03-22 00:08:34 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:54:01 -0800
commit84097518d1ecd2330f9488e4c2d09953a3340e74 (patch)
tree50981fe0584c456a1a86e6d7f611eec223b5f536 /mm/internal.h
parent0f8053a509ceba4a077a50ea7b77039b5559b428 (diff)
downloadvexpress-lsk-84097518d1ecd2330f9488e4c2d09953a3340e74.tar.gz
[PATCH] mm: nommu use compound pages
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>
Diffstat (limited to 'mm/internal.h')
-rw-r--r--mm/internal.h12
1 files changed, 0 insertions, 12 deletions
diff --git a/mm/internal.h b/mm/internal.h
index e3042db2a2d..7bb33977981 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -15,19 +15,7 @@
static inline void set_page_refs(struct page *page, int order)
{
-#ifdef CONFIG_MMU
set_page_count(page, 1);
-#else
- int i;
-
- /*
- * We need to reference all the pages for this order, otherwise if
- * anyone accesses one of the pages with (get/put) it will be freed.
- * - eg: access_process_vm()
- */
- for (i = 0; i < (1 << order); i++)
- set_page_count(page + i, 1);
-#endif /* CONFIG_MMU */
}
static inline void __put_page(struct page *page)