VM: Remove "clear_page_dirty()" and "test_clear_page_dirty()" functions

[powerpc.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 237107c..b3a198c 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -844,38 +844,6 @@ int set_page_dirty_lock(struct page *page)
 }
 EXPORT_SYMBOL(set_page_dirty_lock);
 
-/*
- * Clear a page's dirty flag, while caring for dirty memory accounting. 
- * Returns true if the page was previously dirty.
- */
-int test_clear_page_dirty(struct page *page)
-{
-       struct address_space *mapping = page_mapping(page);
-       unsigned long flags;
-
-       if (!mapping)
-               return TestClearPageDirty(page);
-
-       write_lock_irqsave(&mapping->tree_lock, flags);
-       if (TestClearPageDirty(page)) {
-               radix_tree_tag_clear(&mapping->page_tree,
-                               page_index(page), PAGECACHE_TAG_DIRTY);
-               write_unlock_irqrestore(&mapping->tree_lock, flags);
-               /*
-                * We can continue to use `mapping' here because the
-                * page is locked, which pins the address_space
-                */
-               if (mapping_cap_account_dirty(mapping)) {
-                       page_mkclean(page);
-                       dec_zone_page_state(page, NR_FILE_DIRTY);
-               }
-               return 1;
-       }
-       write_unlock_irqrestore(&mapping->tree_lock, flags);
-       return 0;
-}
-EXPORT_SYMBOL(test_clear_page_dirty);
-
 /*
  * Clear a page's dirty flag, while caring for dirty memory accounting.
  * Returns true if the page was previously dirty.