[patch 4/6] mm: remove atomic

[Nick Piggin <nickpiggin@yahoo.com.au>]

[-- Attachment #1: Type: text/plain, Size: 153 bytes --]

4/6

OK, these first 4 patches don't have much to do with removing
PageReserved, but I put them in this series because that's how
I have them arranged.


[-- Attachment #2: mm-remove-atomic-bitop.patch --]
[-- Type: text/plain, Size: 1223 bytes --]

This bitop does not need to be atomic because it is performed when
there will be no references to the page (ie. the page is being freed).

Signed-off-by: Nick Piggin <npiggin@suse.de>

Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c
+++ linux-2.6/mm/page_alloc.c
@@ -329,7 +329,7 @@ static inline void free_pages_check(cons
 			1 << PG_writeback )))
 		bad_page(function, page);
 	if (PageDirty(page))
-		ClearPageDirty(page);
+		__ClearPageDirty(page);
 }
 
 /*
Index: linux-2.6/include/linux/page-flags.h
===================================================================
--- linux-2.6.orig/include/linux/page-flags.h
+++ linux-2.6/include/linux/page-flags.h
@@ -194,6 +194,7 @@ extern void __mod_page_state(unsigned lo
 #define SetPageDirty(page)	set_bit(PG_dirty, &(page)->flags)
 #define TestSetPageDirty(page)	test_and_set_bit(PG_dirty, &(page)->flags)
 #define ClearPageDirty(page)	clear_bit(PG_dirty, &(page)->flags)
+#define __ClearPageDirty(page)	__clear_bit(PG_dirty, &(page)->flags)
 #define TestClearPageDirty(page) test_and_clear_bit(PG_dirty, &(page)->flags)
 
 #define SetPageLRU(page)	set_bit(PG_lru, &(page)->flags)