43 	*p++ = cpu_to_be32(b->type);  in nfs4_encode_simple()
44 	*p++ = cpu_to_be32(b->simple.nr_sigs);  in nfs4_encode_simple()
45 	for (i = 0; i < b->simple.nr_sigs; i++) {  in nfs4_encode_simple()
46 		p = xdr_encode_hyper(p, b->simple.sigs[i].offset);  in nfs4_encode_simple()
47 		p = xdr_encode_opaque(p, b->simple.sigs[i].sig,  in nfs4_encode_simple()
48 					 b->simple.sigs[i].sig_len);  in nfs4_encode_simple()
56 	struct net *net = server->nfs_client->cl_net;  in bl_resolve_deviceid()
58 	struct bl_dev_msg *reply = &nn->bl_mount_reply;  in bl_resolve_deviceid()
68 	mutex_lock(&nn->bl_mutex);  in bl_resolve_deviceid()
69 	bl_pipe_msg.bl_wq = &nn->bl_wq;  in bl_resolve_deviceid()
71 	b->simple.len += 4;	/* single volume */  in bl_resolve_deviceid()
72 	if (b->simple.len > PAGE_SIZE)  in bl_resolve_deviceid()
76 	msg->len = sizeof(*bl_msg) + b->simple.len;  in bl_resolve_deviceid()
77 	msg->data = kzalloc(msg->len, gfp_mask);  in bl_resolve_deviceid()
78 	if (!msg->data)  in bl_resolve_deviceid()
81 	bl_msg = msg->data;  in bl_resolve_deviceid()
82 	bl_msg->type = BL_DEVICE_MOUNT;  in bl_resolve_deviceid()
83 	bl_msg->totallen = b->simple.len;  in bl_resolve_deviceid()
84 	nfs4_encode_simple(msg->data + sizeof(*bl_msg), b);  in bl_resolve_deviceid()
87 	add_wait_queue(&nn->bl_wq, &wq);  in bl_resolve_deviceid()
88 	rc = rpc_queue_upcall(nn->bl_device_pipe, msg);  in bl_resolve_deviceid()
90 		remove_wait_queue(&nn->bl_wq, &wq);  in bl_resolve_deviceid()
96 	remove_wait_queue(&nn->bl_wq, &wq);  in bl_resolve_deviceid()
98 	if (reply->status != BL_DEVICE_REQUEST_PROC) {  in bl_resolve_deviceid()
100 			__func__, reply->status);  in bl_resolve_deviceid()
104 	dev = MKDEV(reply->major, reply->minor);  in bl_resolve_deviceid()
106 	kfree(msg->data);  in bl_resolve_deviceid()
108 	mutex_unlock(&nn->bl_mutex);  in bl_resolve_deviceid()
115 	struct nfs_net *nn = net_generic(file_inode(filp)->i_sb->s_fs_info,  in bl_pipe_downcall()
119 		return -EINVAL;  in bl_pipe_downcall()
121 	if (copy_from_user(&nn->bl_mount_reply, src, mlen) != 0)  in bl_pipe_downcall()
122 		return -EFAULT;  in bl_pipe_downcall()
124 	wake_up(&nn->bl_wq);  in bl_pipe_downcall()
134 	if (msg->errno >= 0)  in bl_pipe_destroy_msg()
136 	wake_up(bl_pipe_msg->bl_wq);  in bl_pipe_destroy_msg()
148 	struct dentry *dir, *dentry;  in nfs4blocklayout_register_sb()  local
150 	dir = rpc_d_lookup_sb(sb, NFS_PIPE_DIRNAME);  in nfs4blocklayout_register_sb()
151 	if (dir == NULL)  in nfs4blocklayout_register_sb()
152 		return ERR_PTR(-ENOENT);  in nfs4blocklayout_register_sb()
153 	dentry = rpc_mkpipe_dentry(dir, "blocklayout", NULL, pipe);  in nfs4blocklayout_register_sb()
154 	dput(dir);  in nfs4blocklayout_register_sb()
161 	if (pipe->dentry)  in nfs4blocklayout_unregister_sb()
162 		rpc_unlink(pipe->dentry);  in nfs4blocklayout_unregister_sb()
169 	struct net *net = sb->s_fs_info;  in rpc_pipefs_event()
177 	if (nn->bl_device_pipe == NULL) {  in rpc_pipefs_event()
184 		dentry = nfs4blocklayout_register_sb(sb, nn->bl_device_pipe);  in rpc_pipefs_event()
189 		nn->bl_device_pipe->dentry = dentry;  in rpc_pipefs_event()
192 		if (nn->bl_device_pipe->dentry)  in rpc_pipefs_event()
193 			nfs4blocklayout_unregister_sb(sb, nn->bl_device_pipe);  in rpc_pipefs_event()
196 		ret = -ENOTSUPP;  in rpc_pipefs_event()
238 	mutex_init(&nn->bl_mutex);  in nfs4blocklayout_net_init()
239 	init_waitqueue_head(&nn->bl_wq);  in nfs4blocklayout_net_init()
240 	nn->bl_device_pipe = rpc_mkpipe_data(&bl_upcall_ops, 0);  in nfs4blocklayout_net_init()
241 	if (IS_ERR(nn->bl_device_pipe))  in nfs4blocklayout_net_init()
242 		return PTR_ERR(nn->bl_device_pipe);  in nfs4blocklayout_net_init()
243 	dentry = nfs4blocklayout_register_net(net, nn->bl_device_pipe);  in nfs4blocklayout_net_init()
245 		rpc_destroy_pipe_data(nn->bl_device_pipe);  in nfs4blocklayout_net_init()
248 	nn->bl_device_pipe->dentry = dentry;  in nfs4blocklayout_net_init()
256 	nfs4blocklayout_unregister_net(net, nn->bl_device_pipe);  in nfs4blocklayout_net_exit()
257 	rpc_destroy_pipe_data(nn->bl_device_pipe);  in nfs4blocklayout_net_exit()
258 	nn->bl_device_pipe = NULL;  in nfs4blocklayout_net_exit()