[PATCH] cleanup page flags

page->flags cleanup.

Moves the definitions of the page->flags bits and all the PageFoo
macros into linux/page-flags.h.  That file is currently included from
mm.h, but the stage is set to remove that and include page-flags.h
direct in all .c files which require that.  (120 of them).

The patch also makes all the page flag macros and functions consistent:

For PG_foo, the following functions are defined:

	SetPageFoo
	ClearPageFoo
	TestSetPageFoo
	TestClearPageFoo
	PageFoo

and that's it.

- Page_Uptodate is renamed to PageUptodate

- LockPage is removed.  All users updated to use SetPageLocked

- UnlockPage is removed.  All callers updated to use unlock_page().
  it's a real function - there's no need to hide that fact.

- PageTestandClearReferenced renamed to TestClearPageReferenced

- PageSetSlab renamed to SetPageSlab

- __SetPageReserved is removed.  It's an infinitesimally small
   microoptimisation, and is inconsistent.

- TryLockPage is renamed to TestSetPageLocked

- PageSwapCache() is renamed to page_swap_cache(), so it doesn't
  pretend to be a page->flags bit test.

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 041aa8b944a1..b4d6cb34d7e1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -879,7 +879,7 @@ void __init free_area_init_core(int nid, pg_data_t *pgdat, struct page **gmap,
 			struct page *page = mem_map + offset + i;
 			set_page_zone(page, nid * MAX_NR_ZONES + j);
 			set_page_count(page, 0);
-			__SetPageReserved(page);
+			SetPageReserved(page);
 			memlist_init(&page->list);
 			if (j != ZONE_HIGHMEM)
 				set_page_address(page, __va(zone_start_paddr));