The patch titled
Subject: mm: set zone->present_pages to number of existing pages in the zone
has been added to the -mm tree. Its filename is
mm-set-zone-present_pages-to-number-of-existing-pages-in-the-zone.patch
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------------------------------------------------------
From: Jiang Liu <liuj97@xxxxxxxxx>
Subject: mm: set zone->present_pages to number of existing pages in the zone
Now all users of "number of pages managed by the buddy system" have been
converted to use zone->managed_pages, so set zone->present_pages to what
it should be:
present_pages = spanned_pages - absent_pages;
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Wen Congyang <wency@xxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Maciej Rutecki <maciej.rutecki@xxxxxxxxx>
Cc: Chris Clayton <chris2553@xxxxxxxxxxxxxx>
Cc: "Rafael J . Wysocki" <rjw@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Jianguo Wu <wujianguo@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/page_alloc.c~mm-set-zone-present_pages-to-number-of-existing-pages-in-the-zone mm/page_alloc.c
--- a/mm/page_alloc.c~mm-set-zone-present_pages-to-number-of-existing-pages-in-the-zone
+++ a/mm/page_alloc.c
@@ -4644,7 +4644,7 @@ static void __paginginit free_area_init_
nr_all_pages += freesize;
zone->spanned_pages = size;
- zone->present_pages = freesize;
+ zone->present_pages = realsize;
/*
* Set an approximate value for lowmem here, it will be adjusted
* when the bootmem allocator frees pages into the buddy system.
_
Patches currently in -mm which might be from liuj97@xxxxxxxxx are
x86-fix-the-argument-passed-to-sync_global_pgds.patch
mm-use-zone-present_pages-instead-of-zone-managed_pages-where-appropriate.patch
mm-set-zone-present_pages-to-number-of-existing-pages-in-the-zone.patch
mm-increase-totalram_pages-when-free-pages-allocated-by-bootmem-allocator.patch
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