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[PATCH] Optimize free_one_page

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Free one_page currently adds the page to a fake list and calls
free_page_bulk.  Fee_page_bulk takes it off again and then calles
__free_one_page.

Make free_one_page go directly to __free_one_page.  Saves list on / off and
a temporary list in free_one_page for higher ordered pages.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-09-25 23:31:48 -07:00 committed by Linus Torvalds
parent 46a82b2d55
commit 006d22d9bb
1 changed files with 5 additions and 3 deletions
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8
mm/page_alloc.c
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@ -448,9 +448,11 @@ static void free_pages_bulk(struct zone *zone, int count,
static void free_one_page(struct zone *zone, struct page *page, int order)
{
LIST_HEAD(list);
list_add(&page->lru, &list);
free_pages_bulk(zone, 1, &list, order);
spin_lock(&zone->lock);
zone->all_unreclaimable = 0;
zone->pages_scanned = 0;
__free_one_page(page, zone ,order);
spin_unlock(&zone->lock);
}
static void __free_pages_ok(struct page *page, unsigned int order)