1 files changed, 11 insertions, 12 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 9f697419ed8e..891e1c78e4f1 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -760,15 +760,9 @@ EXPORT_SYMBOL(mark_buffer_dirty_inode);
  * If warn is true, then emit a warning if the page is not uptodate and has
  * not been truncated.
  */
-static int __set_page_dirty(struct page *page,
+static void __set_page_dirty(struct page *page,
                 struct address_space *mapping, int warn)
 {
-        if (unlikely(!mapping))
-                return !TestSetPageDirty(page);
-
-        if (TestSetPageDirty(page))
-                return 0;
-
         spin_lock_irq(&mapping->tree_lock);
         if (page->mapping) {    /* Race with truncate? */
                 WARN_ON_ONCE(warn && !PageUptodate(page));
@@ -785,8 +779,6 @@ static int __set_page_dirty(struct page *page,
         }
         spin_unlock_irq(&mapping->tree_lock);
         __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
-
-        return 1;
 }
 
 /*
@@ -816,6 +808,7 @@ static int __set_page_dirty(struct page *page,
  */
 int __set_page_dirty_buffers(struct page *page)
 {
+        int newly_dirty;
         struct address_space *mapping = page_mapping(page);
 
         if (unlikely(!mapping))
@@ -831,9 +824,12 @@ int __set_page_dirty_buffers(struct page *page)
                         bh = bh->b_this_page;
                 } while (bh != head);
         }
+        newly_dirty = !TestSetPageDirty(page);
         spin_unlock(&mapping->private_lock);
 
-        return __set_page_dirty(page, mapping, 1);
+        if (newly_dirty)
+                __set_page_dirty(page, mapping, 1);
+        return newly_dirty;
 }
 EXPORT_SYMBOL(__set_page_dirty_buffers);
 
@@ -1262,8 +1258,11 @@ void mark_buffer_dirty(struct buffer_head *bh)
                         return;
         }
 
-        if (!test_set_buffer_dirty(bh))
-                __set_page_dirty(bh->b_page, page_mapping(bh->b_page), 0);
+        if (!test_set_buffer_dirty(bh)) {
+                struct page *page = bh->b_page;
+                if (!TestSetPageDirty(page))
+                        __set_page_dirty(page, page_mapping(page), 0);
+        }
 }
 
 /*