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>
This commit is contained in:
Weijie Yang 2016-05-20 16:58:04 -07:00 committed by Linus Torvalds
parent d70c17d436
commit 0c9ad804f1

View File

@ -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;