fuse: add back pointer from fuse_chan to fuse_conn

Will be needed by callbacks from the transport layer to the fs layer.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/fuse_dev_i.h

@@ -96,6 +96,9 @@ struct fuse_chan {
 	 */
 	spinlock_t lock;
 
+	/* back pointer: fc->chan->conn == fc */
+	struct fuse_conn *conn;
+
 	/** Input queue */
 	struct fuse_iqueue iq;
 

fs/fuse/inode.c

@@ -995,6 +995,7 @@ void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm,
 	INIT_LIST_HEAD(&fc->mounts);
 	list_add(&fm->fc_entry, &fc->mounts);
 	fm->fc = fc;
+	fch->conn = fc;
 	fc->chan = fch;
 }
 EXPORT_SYMBOL_GPL(fuse_conn_init);