mm: introduce and use mapping_empty()

[linux-2.6-microblaze.git] / include / linux / pagemap.h

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 469fa7f..a4bd411 100644 (file)
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -18,6 +18,11 @@
 
 struct pagevec;
 
+static inline bool mapping_empty(struct address_space *mapping)
+{
+       return xa_empty(&mapping->i_pages);
+}
+
 /*
  * Bits in mapping->flags.
  */