The quilt patch titled
Subject: mm: cma: use pageblock_order as the single alignment
has been removed from the -mm tree. Its filename was
mm-cma-use-pageblock_order-as-the-single-alignment.patch
This patch was dropped because it was merged into the mm-stable branch\nof git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Zi Yan <ziy@xxxxxxxxxx>
Subject: mm: cma: use pageblock_order as the single alignment
Now alloc_contig_range() works at pageblock granularity. Change CMA
allocation, which uses alloc_contig_range(), to use pageblock_nr_pages
alignment.
Link: https://lkml.kernel.org/r/20220425143118.2850746-6-zi.yan@xxxxxxxx
Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Eric Ren <renzhengeek@xxxxxxxxx>
Cc: kernel test robot <lkp@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/cma.h | 4 ++--
include/linux/mmzone.h | 5 +----
mm/page_alloc.c | 4 ++--
3 files changed, 5 insertions(+), 8 deletions(-)
--- a/include/linux/cma.h~mm-cma-use-pageblock_order-as-the-single-alignment
+++ a/include/linux/cma.h
@@ -17,11 +17,11 @@
#define CMA_MAX_NAME 64
/*
- * TODO: once the buddy -- especially pageblock merging and alloc_contig_range()
+ * the buddy -- especially pageblock merging and alloc_contig_range()
* -- can deal with only some pageblocks of a higher-order page being
* MIGRATE_CMA, we can use pageblock_nr_pages.
*/
-#define CMA_MIN_ALIGNMENT_PAGES MAX_ORDER_NR_PAGES
+#define CMA_MIN_ALIGNMENT_PAGES pageblock_nr_pages
#define CMA_MIN_ALIGNMENT_BYTES (PAGE_SIZE * CMA_MIN_ALIGNMENT_PAGES)
struct cma;
--- a/include/linux/mmzone.h~mm-cma-use-pageblock_order-as-the-single-alignment
+++ a/include/linux/mmzone.h
@@ -54,10 +54,7 @@ enum migratetype {
*
* The way to use it is to change migratetype of a range of
* pageblocks to MIGRATE_CMA which can be done by
- * __free_pageblock_cma() function. What is important though
- * is that a range of pageblocks must be aligned to
- * MAX_ORDER_NR_PAGES should biggest page be bigger than
- * a single pageblock.
+ * __free_pageblock_cma() function.
*/
MIGRATE_CMA,
#endif
--- a/mm/page_alloc.c~mm-cma-use-pageblock_order-as-the-single-alignment
+++ a/mm/page_alloc.c
@@ -9046,8 +9046,8 @@ int __alloc_contig_migrate_range(struct
* be either of the two.
* @gfp_mask: GFP mask to use during compaction
*
- * The PFN range does not have to be pageblock or MAX_ORDER_NR_PAGES
- * aligned. The PFN range must belong to a single zone.
+ * The PFN range does not have to be pageblock aligned. The PFN range must
+ * belong to a single zone.
*
* The first thing this routine does is attempt to MIGRATE_ISOLATE all
* pageblocks in the range. Once isolated, the pageblocks should not
_
Patches currently in -mm which might be from ziy@xxxxxxxxxx are
