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-rw-r--r--include/linux/mmzone.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index a8140a9a65e..9a5d5590bd3 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -748,7 +748,7 @@ extern struct zone *next_zone(struct zone *zone);
#define PAGE_SECTION_MASK (~(PAGES_PER_SECTION-1))
#define SECTION_BLOCKFLAGS_BITS \
- ((SECTION_SIZE_BITS - (MAX_ORDER-1)) * NR_PAGEBLOCK_BITS)
+ ((1 << (PFN_SECTION_SHIFT - (MAX_ORDER-1))) * NR_PAGEBLOCK_BITS)
#if (MAX_ORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS
#error Allocator MAX_ORDER exceeds SECTION_SIZE
@@ -769,7 +769,9 @@ struct mem_section {
* before using it wrong.
*/
unsigned long section_mem_map;
- DECLARE_BITMAP(pageblock_flags, SECTION_BLOCKFLAGS_BITS);
+
+ /* See declaration of similar field in struct zone */
+ unsigned long *pageblock_flags;
};
#ifdef CONFIG_SPARSEMEM_EXTREME