[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, 2 insertions, 0 deletions

diff --git a/fs/gfs2/ops_dentry.h b/fs/gfs2/ops_dentry.h
index e7b05e5c62ec..5caa3db4d3f5 100644
--- a/fs/gfs2/ops_dentry.h
+++ b/fs/gfs2/ops_dentry.h
@@ -10,6 +10,8 @@
 #ifndef __OPS_DENTRY_DOT_H__
 #define __OPS_DENTRY_DOT_H__
 
+#include <linux/dcache.h>
+
 extern struct dentry_operations gfs2_dops;
 
 #endif /* __OPS_DENTRY_DOT_H__ */