2 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/fadvise.h b/include/linux/fadvise.h
index e8e747139b9a..b2913bba35d8 100644
--- a/include/linux/fadvise.h
+++ b/include/linux/fadvise.h
@@ -18,4 +18,10 @@
 #define POSIX_FADV_NOREUSE      5 /* Data will be accessed once.  */
 #endif
 
+/*
+ * Linux-specific fadvise() extensions:
+ */
+#define LINUX_FADV_ASYNC_WRITE  32      /* Start writeout on range */
+#define LINUX_FADV_WRITE_WAIT   33      /* Wait upon writeout to range */
+
 #endif  /* FADVISE_H_INCLUDED */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 65e6df247ea5..0ad70c1e5e55 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1473,6 +1473,11 @@ extern int filemap_fdatawait(struct address_space *);
 extern int filemap_write_and_wait(struct address_space *mapping);
 extern int filemap_write_and_wait_range(struct address_space *mapping,
                                         loff_t lstart, loff_t lend);
+extern int wait_on_page_writeback_range(struct address_space *mapping,
+                                pgoff_t start, pgoff_t end);
+extern int __filemap_fdatawrite_range(struct address_space *mapping,
+                                loff_t start, loff_t end, int sync_mode);
+
 extern void sync_supers(void);
 extern void sync_filesystems(int wait);
 extern void emergency_sync(void);