Free_hot_cold_page() and __free_pages_ok() have very similar
freeing preparation. This patch make consolicate it.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
---
mm/page_alloc.c | 40 +++++++++++++++++++++-------------------
1 files changed, 21 insertions(+), 19 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d03c946..6a7d0d0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -599,20 +599,23 @@ static void free_one_page(struct zone *zone, struct page *page, int order,
spin_unlock(&zone->lock);
}
-static void __free_pages_ok(struct page *page, unsigned int order)
+static bool free_pages_prepare(struct page *page, unsigned int order)
{
- unsigned long flags;
int i;
int bad = 0;
- int wasMlocked = __TestClearPageMlocked(page);
trace_mm_page_free_direct(page, order);
kmemcheck_free_shadow(page, order);
- for (i = 0 ; i < (1 << order) ; ++i)
- bad += free_pages_check(page + i);
+ for (i = 0 ; i < (1 << order) ; ++i) {
+ struct page *pg = page + i;
+
+ if (PageAnon(pg))
+ pg->mapping = NULL;
+ bad += free_pages_check(pg);
+ }
if (bad)
- return;
+ return false;
if (!PageHighMem(page)) {
debug_check_no_locks_freed(page_address(page),PAGE_SIZE<<order);
@@ -622,6 +625,17 @@ static void __free_pages_ok(struct page *page, unsigned int order)
arch_free_page(page, order);
kernel_map_pages(page, 1 << order, 0);
+ return true;
+}
+
+static void __free_pages_ok(struct page *page, unsigned int order)
+{
+ unsigned long flags;
+ int wasMlocked = __TestClearPageMlocked(page);
+
+ if (!free_pages_prepare(page, order))
+ return;
+
local_irq_save(flags);
if (unlikely(wasMlocked))
free_page_mlock(page);
@@ -1107,21 +1121,9 @@ void free_hot_cold_page(struct page *page, int cold)
int migratetype;
int wasMlocked = __TestClearPageMlocked(page);
- trace_mm_page_free_direct(page, 0);
- kmemcheck_free_shadow(page, 0);
-
- if (PageAnon(page))
- page->mapping = NULL;
- if (free_pages_check(page))
+ if (!free_pages_prepare(page, 0))
return;
- if (!PageHighMem(page)) {
- debug_check_no_locks_freed(page_address(page), PAGE_SIZE);
- debug_check_no_obj_freed(page_address(page), PAGE_SIZE);
- }
- arch_free_page(page, 0);
- kernel_map_pages(page, 1, 0);
-
migratetype = get_pageblock_migratetype(page);
set_page_private(page, migratetype);
local_irq_save(flags);
--
1.6.5.2
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>