---

yaml --- r: 217450 b: refs/heads/master c: f629d1c h: refs/heads/master v: v3
git-mirror · Oct 26, 2010 · 865b2ac · 865b2ac
1 parent e609981
commit 865b2ac
Show file tree

Hide file tree

Showing 4 changed files with 15 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0def08e3acc2c9c934e4671487029aed52202d42
+refs/heads/master: f629d1c9bd0dbc44a6c4f9a4a67d1646c42bfc6f
diff --git a/trunk/fs/nilfs2/segment.c b/trunk/fs/nilfs2/segment.c
@@ -1609,7 +1609,7 @@ nilfs_copy_replace_page_buffers(struct page *page, struct list_head *out)
 	kunmap_atomic(kaddr, KM_USER0);
 
 	if (!TestSetPageWriteback(clone_page))
-		inc_zone_page_state(clone_page, NR_WRITEBACK);
+		account_page_writeback(clone_page);
 	unlock_page(clone_page);
 
 	return 0;

diff --git a/trunk/include/linux/mm.h b/trunk/include/linux/mm.h
@@ -868,6 +868,7 @@ int __set_page_dirty_no_writeback(struct page *page);
 int redirty_page_for_writepage(struct writeback_control *wbc,
 				struct page *page);
 void account_page_dirtied(struct page *page, struct address_space *mapping);
+void account_page_writeback(struct page *page);
 int set_page_dirty(struct page *page);
 int set_page_dirty_lock(struct page *page);
 int clear_page_dirty_for_io(struct page *page);

diff --git a/trunk/mm/page-writeback.c b/trunk/mm/page-writeback.c
@@ -1128,6 +1128,17 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
 }
 EXPORT_SYMBOL(account_page_dirtied);
 
+/*
+ * Helper function for set_page_writeback family.
+ * NOTE: Unlike account_page_dirtied this does not rely on being atomic
+ * wrt interrupts.
+ */
+void account_page_writeback(struct page *page)
+{
+	inc_zone_page_state(page, NR_WRITEBACK);
+}
+EXPORT_SYMBOL(account_page_writeback);
+
 /*
  * For address_spaces which do not use buffers.  Just tag the page as dirty in
  * its radix tree.
@@ -1366,7 +1377,7 @@ int test_set_page_writeback(struct page *page)
 		ret = TestSetPageWriteback(page);
 	}
 	if (!ret)
-		inc_zone_page_state(page, NR_WRITEBACK);
+		account_page_writeback(page);
 	return ret;
 
 }