[PATCH] fs/direct-io: include internal.h for sb_init_dio_done_wq

[Ben Dooks (Codethink)]

The sb_init_dio_done_wq() is declared in internal.h but
fs/direct-io.c does not include this file. Fix the warning
by including internal.h

fs/direct-io.c:612:5: warning: symbol 'sb_init_dio_done_wq' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx>
---
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: linux-fsdevel@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 fs/direct-io.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/direct-io.c b/fs/direct-io.c
index 9329ced91f1d..babdc9ed2cc0 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -39,6 +39,8 @@
 #include <linux/atomic.h>
 #include <linux/prefetch.h>
 
+#include "internal.h"
+
 /*
  * How many user pages to map in one call to get_user_pages().  This determines
  * the size of a structure in the slab cache
-- 
2.23.0