[PATCH 01/34] mm: kill-page-activate.patch

[Peter Zijlstra <a.p.zijlstra@chello.nl>]

From: Marcelo Tosatti <marcelo.tosatti@cyclades.com>

Get rid of activate_page() callers.

Instead, page activation is achieved through mark_page_accessed()
interface.

Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

---

 include/linux/swap.h |    1 -
 mm/swapfile.c        |    4 ++--
 2 files changed, 2 insertions(+), 3 deletions(-)

Index: linux-2.6/include/linux/swap.h
===================================================================
--- linux-2.6.orig/include/linux/swap.h	2006-03-13 20:37:08.000000000 +0100
+++ linux-2.6/include/linux/swap.h	2006-03-13 20:37:22.000000000 +0100
@@ -164,7 +164,6 @@ extern unsigned int nr_free_pagecache_pa
 /* linux/mm/swap.c */
 extern void FASTCALL(lru_cache_add(struct page *));
 extern void FASTCALL(lru_cache_add_active(struct page *));
-extern void FASTCALL(activate_page(struct page *));
 extern void FASTCALL(mark_page_accessed(struct page *));
 extern void lru_add_drain(void);
 extern int lru_add_drain_all(void);
Index: linux-2.6/mm/swapfile.c
===================================================================
--- linux-2.6.orig/mm/swapfile.c	2006-03-13 20:37:08.000000000 +0100
+++ linux-2.6/mm/swapfile.c	2006-03-13 20:37:22.000000000 +0100
@@ -435,7 +435,7 @@ static void unuse_pte(struct vm_area_str
 	 * Move the page to the active list so it is not
 	 * immediately swapped out again after swapon.
 	 */
-	activate_page(page);
+	mark_page_accessed(page);
 }
 
 static int unuse_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
@@ -537,7 +537,7 @@ static int unuse_mm(struct mm_struct *mm
 		 * Activate page so shrink_cache is unlikely to unmap its
 		 * ptes while lock is dropped, so swapoff can make progress.
 		 */
-		activate_page(page);
+		mark_page_accessed(page);
 		unlock_page(page);
 		down_read(&mm->mmap_sem);
 		lock_page(page);
-
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