X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fpage-writeback.c;h=2adb89959885e77e228097a6405ffd929b2b4f68;hb=674b892ede247ef4fb8d00918f02e29c32b9bbaf;hp=44720363374cb24ca3e90cb48db64d99e5bbdb5b;hpb=df3d80f5a5c74168be42788364d13cf6c83c7b9c;p=linux-2.6

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 4472036337..2adb899598 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1022,17 +1022,15 @@ int test_set_page_writeback(struct page *page)
 EXPORT_SYMBOL(test_set_page_writeback);
 
 /*
- * Return true if any of the pages in the mapping are marged with the
+ * Return true if any of the pages in the mapping are marked with the
  * passed tag.
  */
 int mapping_tagged(struct address_space *mapping, int tag)
 {
-	unsigned long flags;
 	int ret;
-
-	read_lock_irqsave(&mapping->tree_lock, flags);
+	rcu_read_lock();
 	ret = radix_tree_tagged(&mapping->page_tree, tag);
-	read_unlock_irqrestore(&mapping->tree_lock, flags);
+	rcu_read_unlock();
 	return ret;
 }
 EXPORT_SYMBOL(mapping_tagged);