1 files changed, 6 insertions, 0 deletions
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index bd8496d..9665c2b 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -130,6 +130,7 @@ struct v9fs_inode {
 #endif
 	unsigned int cache_validity;
 	struct p9_fid *writeback_fid;
+	struct mutex v_mutex;
 	struct inode vfs_inode;
 };
 
@@ -173,6 +174,11 @@ static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
 	return (inode->i_sb->s_fs_info);
 }
 
+static inline struct v9fs_session_info *v9fs_dentry2v9ses(struct dentry *dentry)
+{
+	return dentry->d_sb->s_fs_info;
+}
+
 static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses)
 {
 	return v9ses->flags & V9FS_PROTO_2000U;