The patch titled
Breakout page_order() to internal.h to avoid special knowledge of the buddy allocator
has been removed from the -mm tree. Its filename was
breakout-page_order-to-internalh-to-avoid-special-knowledge-of-the-buddy-allocator.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Breakout page_order() to internal.h to avoid special knowledge of the buddy allocator
From: Mel Gorman <mel@xxxxxxxxx>
The statistics patch later needs to know what order a free page is on the free
lists. Rather than having special knowledge of page_private() when
PageBuddy() is set, this patch places out page_order() in internal.h and adds
a VM_BUG_ON to catch using it on non-PageBuddy pages.
Signed-off-by: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Acked-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/internal.h | 10 ++++++++++
mm/page_alloc.c | 10 ----------
2 files changed, 10 insertions(+), 10 deletions(-)
diff -puN mm/internal.h~breakout-page_order-to-internalh-to-avoid-special-knowledge-of-the-buddy-allocator mm/internal.h
--- a/mm/internal.h~breakout-page_order-to-internalh-to-avoid-special-knowledge-of-the-buddy-allocator
+++ a/mm/internal.h
@@ -37,4 +37,14 @@ static inline void __put_page(struct pag
extern void fastcall __init __free_pages_bootmem(struct page *page,
unsigned int order);
+/*
+ * function for dealing with page's order in buddy system.
+ * zone->lock is already acquired when we use these.
+ * So, we don't need atomic page->flags operations here.
+ */
+static inline unsigned long page_order(struct page *page)
+{
+ VM_BUG_ON(!PageBuddy(page));
+ return page_private(page);
+}
#endif
diff -puN mm/page_alloc.c~breakout-page_order-to-internalh-to-avoid-special-knowledge-of-the-buddy-allocator mm/page_alloc.c
--- a/mm/page_alloc.c~breakout-page_order-to-internalh-to-avoid-special-knowledge-of-the-buddy-allocator
+++ a/mm/page_alloc.c
@@ -313,16 +313,6 @@ static inline void prep_zero_page(struct
clear_highpage(page + i);
}
-/*
- * function for dealing with page's order in buddy system.
- * zone->lock is already acquired when we use these.
- * So, we don't need atomic page->flags operations here.
- */
-static inline unsigned long page_order(struct page *page)
-{
- return page_private(page);
-}
-
static inline void set_page_order(struct page *page, int order)
{
set_page_private(page, order);
_
Patches currently in -mm which might be from mel@xxxxxxxxx are
origin.patch
ext2-reservations.patch
page-owner-tracking-leak-detector.patch
add-debugging-aid-for-memory-initialisation-problems.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
