iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] mm: cleanup prep_ stuff

Browse Source 
Move the prep_ stuff into prep_new_page.

Signed-off-by: Nick Piggin <npiggin@suse.de>
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 00:08:41 -08:00 committed by Linus Torvalds
parent 7835e98b2e
commit 17cf44064a
1 changed files with 18 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
mm/page_alloc.c
View File

@ -212,6 +212,15 @@ static void destroy_compound_page(struct page *page, unsigned long order)
} }
} }
static inline void prep_zero_page(struct page *page, int order, gfp_t gfp_flags)
{
int i;
BUG_ON((gfp_flags & (__GFP_WAIT | __GFP_HIGHMEM)) == __GFP_HIGHMEM);
for (i = 0; i < (1 << order); i++)
clear_highpage(page + i);
}
/* /*
* function for dealing with page's order in buddy system. * function for dealing with page's order in buddy system.
* zone->lock is already acquired when we use these. * zone->lock is already acquired when we use these.
@ -496,7 +505,7 @@ static inline void expand(struct zone *zone, struct page *page,
/* /*
* This page is about to be returned from the page allocator * This page is about to be returned from the page allocator
*/ */
static int prep_new_page(struct page *page, int order) static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
{ {
if (unlikely(page_mapcount(page) | if (unlikely(page_mapcount(page) |
(page->mapping != NULL) | (page->mapping != NULL) |
@ -527,6 +536,13 @@ static int prep_new_page(struct page *page, int order)
set_page_private(page, 0); set_page_private(page, 0);
set_page_refcounted(page); set_page_refcounted(page);
kernel_map_pages(page, 1 << order, 1); kernel_map_pages(page, 1 << order, 1);
if (gfp_flags & __GFP_ZERO)
prep_zero_page(page, order, gfp_flags);
if (order && (gfp_flags & __GFP_COMP))
prep_compound_page(page, order);
return 0; return 0;
} }
@ -732,15 +748,6 @@ void fastcall free_cold_page(struct page *page)
free_hot_cold_page(page, 1); free_hot_cold_page(page, 1);
} }
static inline void prep_zero_page(struct page *page, int order, gfp_t gfp_flags)
{
int i;
BUG_ON((gfp_flags & (__GFP_WAIT | __GFP_HIGHMEM)) == __GFP_HIGHMEM);
for(i = 0; i < (1 << order); i++)
clear_highpage(page + i);
}
/* /*
* split_page takes a non-compound higher-order page, and splits it into * split_page takes a non-compound higher-order page, and splits it into
* n (1<<order) sub-pages: page[0..n] * n (1<<order) sub-pages: page[0..n]
@ -802,14 +809,8 @@ again:
put_cpu(); put_cpu();
BUG_ON(bad_range(zone, page)); BUG_ON(bad_range(zone, page));
if (prep_new_page(page, order)) if (prep_new_page(page, order, gfp_flags))
goto again; goto again;
if (gfp_flags & __GFP_ZERO)
prep_zero_page(page, order, gfp_flags);
if (order && (gfp_flags & __GFP_COMP))
prep_compound_page(page, order);
return page; return page;
failed: failed: