mm fix commmets: if SPARSEMEM, pgdata doesn't have page_ext

If SPARSEMEM, use page_ext in mem_section
if !SPARSEMEM, use page_ext in pgdata

Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 8dd0333b01dc..02069c23486d 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1063,7 +1063,7 @@ struct mem_section {
         unsigned long *pageblock_flags;
 #ifdef CONFIG_PAGE_EXTENSION
         /*
-         * If !SPARSEMEM, pgdat doesn't have page_ext pointer. We use
+         * If SPARSEMEM, pgdat doesn't have page_ext pointer. We use
          * section. (see page_ext.h about this.)
          */
         struct page_ext *page_ext;