[PATCH] mm: cma: fix accounting of CMA pages placed in high memory

[Marek Szyprowski]

The total number of low memory pages is determined as
totalram_pages - totalhigh_pages, so without this patch all CMA
pageblocks placed in highmem were accounted to low memory.

Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
 mm/page_alloc.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index f5bab0a..6415d93 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -773,6 +773,10 @@ void __init init_cma_reserved_pageblock(struct page *page)
 	set_pageblock_migratetype(page, MIGRATE_CMA);
 	__free_pages(page, pageblock_order);
 	totalram_pages += pageblock_nr_pages;
+#ifdef CONFIG_HIGHMEM
+	if (PageHighMem(page))
+		totalhigh_pages += pageblock_nr_pages;
+#endif
 }
 #endif
 
-- 
1.7.9.5

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