Subject: [merged] mm-fix-page_group_by_mobility_disabled-breakage.patch removed from -mm tree
To: kosaki.motohiro@xxxxxxxxxxxxxx,mgorman@xxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 13 Nov 2013 12:39:16 -0800
The patch titled
Subject: mm: fix page_group_by_mobility_disabled breakage
has been removed from the -mm tree. Its filename was
mm-fix-page_group_by_mobility_disabled-breakage.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Subject: mm: fix page_group_by_mobility_disabled breakage
Currently, set_pageblock_migratetype() screws up MIGRATE_CMA and
MIGRATE_ISOLATE if page_group_by_mobility_disabled is true. It rewrites
the argument to MIGRATE_UNMOVABLE and we lost these attribute.
The problem was introduced by 49255c619f ("page allocator: move check for
disabled anti-fragmentation out of fastpath"). So a 4 year old issue may
mean that nobody uses page_group_by_mobility_disabled.
But anyway, this patch fixes the problem.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/page_alloc.c~mm-fix-page_group_by_mobility_disabled-breakage mm/page_alloc.c
--- a/mm/page_alloc.c~mm-fix-page_group_by_mobility_disabled-breakage
+++ a/mm/page_alloc.c
@@ -234,8 +234,8 @@ int page_group_by_mobility_disabled __re
void set_pageblock_migratetype(struct page *page, int migratetype)
{
-
- if (unlikely(page_group_by_mobility_disabled))
+ if (unlikely(page_group_by_mobility_disabled &&
+ migratetype < MIGRATE_PCPTYPES))
migratetype = MIGRATE_UNMOVABLE;
set_pageblock_flags_group(page, (unsigned long)migratetype,
_
Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are
origin.patch
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