1 files changed, 12 insertions, 5 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index be0efbde4994..f7e088f5a309 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -515,7 +515,7 @@ static int __cpuinit
 ratelimit_handler(struct notifier_block *self, unsigned long u, void *v)
 {
         writeback_set_ratelimit();
-        return 0;
+        return NOTIFY_DONE;
 }
 
 static struct notifier_block __cpuinitdata ratelimit_nb = {
@@ -549,9 +549,7 @@ void __init page_writeback_init(void)
 }
 
 /**
- * generic_writepages - walk the list of dirty pages of the given
- *                      address space and writepage() all of them.
- *
+ * generic_writepages - walk the list of dirty pages of the given address space and writepage() all of them.
  * @mapping: address space structure to write
  * @wbc: subtract the number of written pages from *@wbc->nr_to_write
  *
@@ -698,7 +696,6 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
 
 /**
  * write_one_page - write out a single page and optionally wait on I/O
- *
  * @page: the page to write
  * @wait: if true, wait on writeout
  *
@@ -737,6 +734,16 @@ int write_one_page(struct page *page, int wait)
 EXPORT_SYMBOL(write_one_page);
 
 /*
+ * For address_spaces which do not use buffers nor write back.
+ */
+int __set_page_dirty_no_writeback(struct page *page)
+{
+        if (!PageDirty(page))
+                SetPageDirty(page);
+        return 0;
+}
+
+/*
  * For address_spaces which do not use buffers.  Just tag the page as dirty in
  * its radix tree.
  *