[GFS2] Make headers compile on their own

As per Jan Engelhardt's comments, this should make all the headers
compile on their own by including and/or declaring structures
early.

Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/gfs2/ops_address.h b/fs/gfs2/ops_address.h
index 6c07aa2bd98a..35aaee4aa7e1 100644
--- a/fs/gfs2/ops_address.h
+++ b/fs/gfs2/ops_address.h
@@ -10,6 +10,10 @@
 #ifndef __OPS_ADDRESS_DOT_H__
 #define __OPS_ADDRESS_DOT_H__
 
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/mm.h>
+
 extern const struct address_space_operations gfs2_file_aops;
 extern int gfs2_get_block(struct inode *inode, sector_t lblock,
 			  struct buffer_head *bh_result, int create);