Merge branch 'topic/hdsp' into for-linus

[pandora-kernel.git] / mm / vmstat.c

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 66f6130..74d66db 100644 (file)
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -509,22 +509,11 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m,
                        continue;
 
                page = pfn_to_page(pfn);
-#ifdef CONFIG_ARCH_FLATMEM_HAS_HOLES
-               /*
-                * Ordinarily, memory holes in flatmem still have a valid
-                * memmap for the PFN range. However, an architecture for
-                * embedded systems (e.g. ARM) can free up the memmap backing
-                * holes to save memory on the assumption the memmap is
-                * never used. The page_zone linkages are then broken even
-                * though pfn_valid() returns true. Skip the page if the
-                * linkages are broken. Even if this test passed, the impact
-                * is that the counters for the movable type are off but
-                * fragmentation monitoring is likely meaningless on small
-                * systems.
-                */
-               if (page_zone(page) != zone)
+
+               /* Watch for unexpected holes punched in the memmap */
+               if (!memmap_valid_within(pfn, page, zone))
                        continue;
-#endif
+
                mtype = get_pageblock_migratetype(page);
 
                if (mtype < MIGRATE_TYPES)