From: Nick Piggin <npiggin@suse.de>
Date: Wed, 22 Mar 2006 08:08:01 +0000 (-0800)
Subject: [PATCH] mm: page_alloc less atomics
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5e9dace8d386def04219134d7160e8a778824764;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] mm: page_alloc less atomics

More atomic operation removal from page allocator

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index da71d63df46..76c7ffdd042 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -328,8 +328,8 @@ extern void __mod_page_state_offset(unsigned long offset, unsigned long delta);
 #define TestClearPageReclaim(page) test_and_clear_bit(PG_reclaim, &(page)->flags)
 
 #define PageCompound(page)	test_bit(PG_compound, &(page)->flags)
-#define SetPageCompound(page)	set_bit(PG_compound, &(page)->flags)
-#define ClearPageCompound(page)	clear_bit(PG_compound, &(page)->flags)
+#define __SetPageCompound(page)	__set_bit(PG_compound, &(page)->flags)
+#define __ClearPageCompound(page) __clear_bit(PG_compound, &(page)->flags)
 
 #ifdef CONFIG_SWAP
 #define PageSwapCache(page)	test_bit(PG_swapcache, &(page)->flags)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 61775866ea1..10291985135 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -190,7 +190,7 @@ static void prep_compound_page(struct page *page, unsigned long order)
 	for (i = 0; i < nr_pages; i++) {
 		struct page *p = page + i;
 
-		SetPageCompound(p);
+		__SetPageCompound(p);
 		set_page_private(p, (unsigned long)page);
 	}
 }
@@ -209,7 +209,7 @@ static void destroy_compound_page(struct page *page, unsigned long order)
 		if (unlikely(!PageCompound(p) |
 				(page_private(p) != (unsigned long)page)))
 			bad_page(page);
-		ClearPageCompound(p);
+		__ClearPageCompound(p);
 	}
 }