Index: uspace/srv/devman/main.c
===================================================================
--- uspace/srv/devman/main.c	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/srv/devman/main.c	(revision c3fa24e7606bbff6faa8076d0fea703c4dbca192)
@@ -136,5 +136,5 @@
 
 	async_exch_t *exch = async_exchange_begin(driver->sess);
-	async_forward_fast(icall, exch, INTERFACE_DDF_CLIENT, handle, 0, IPC_FF_NONE);
+	async_forward_1(icall, exch, INTERFACE_DDF_CLIENT, handle, IPC_FF_NONE);
 	async_exchange_end(exch);
 
@@ -215,5 +215,5 @@
 
 	async_exch_t *exch = async_exchange_begin(driver->sess);
-	async_forward_fast(icall, exch, INTERFACE_DDF_DRIVER, fun_handle, 0, IPC_FF_NONE);
+	async_forward_1(icall, exch, INTERFACE_DDF_DRIVER, fun_handle, IPC_FF_NONE);
 	async_exchange_end(exch);
 
@@ -250,5 +250,5 @@
 
 	async_exch_t *exch = async_exchange_begin(driver->sess);
-	async_forward_fast(icall, exch, iface, handle, 0, IPC_FF_NONE);
+	async_forward_1(icall, exch, iface, handle, IPC_FF_NONE);
 	async_exchange_end(exch);
 
Index: uspace/srv/fs/locfs/locfs_ops.c
===================================================================
--- uspace/srv/fs/locfs/locfs_ops.c	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/srv/fs/locfs/locfs_ops.c	(revision c3fa24e7606bbff6faa8076d0fea703c4dbca192)
@@ -583,5 +583,5 @@
 
 		/* Forward the IPC_M_DATA_READ request to the driver */
-		async_forward_fast(&call, exch, 0, 0, 0, IPC_FF_ROUTE_FROM_ME);
+		async_forward_0(&call, exch, 0, IPC_FF_ROUTE_FROM_ME);
 
 		async_exchange_end(exch);
@@ -647,5 +647,5 @@
 
 		/* Forward the IPC_M_DATA_WRITE request to the driver */
-		async_forward_fast(&call, exch, 0, 0, 0, IPC_FF_ROUTE_FROM_ME);
+		async_forward_0(&call, exch, 0, IPC_FF_ROUTE_FROM_ME);
 
 		async_exchange_end(exch);
Index: uspace/srv/locsrv/locsrv.c
===================================================================
--- uspace/srv/locsrv/locsrv.c	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/srv/locsrv/locsrv.c	(revision c3fa24e7606bbff6faa8076d0fea703c4dbca192)
@@ -726,5 +726,5 @@
 
 	async_exch_t *exch = async_exchange_begin(svc->server->sess);
-	async_forward_fast(call, exch, iface, svc->id, 0, IPC_FF_NONE);
+	async_forward_1(call, exch, iface, svc->id, IPC_FF_NONE);
 	async_exchange_end(exch);
 
Index: uspace/srv/ns/clonable.c
===================================================================
--- uspace/srv/ns/clonable.c	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/srv/ns/clonable.c	(revision c3fa24e7606bbff6faa8076d0fea703c4dbca192)
@@ -94,6 +94,6 @@
 
 	async_exch_t *exch = async_exchange_begin(sess);
-	async_forward_fast(&csr->call, exch, csr->iface,
-	    IPC_GET_ARG3(csr->call), 0, IPC_FF_NONE);
+	async_forward_1(&csr->call, exch, csr->iface,
+	    IPC_GET_ARG3(csr->call), IPC_FF_NONE);
 	async_exchange_end(exch);
 
Index: uspace/srv/ns/service.c
===================================================================
--- uspace/srv/ns/service.c	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/srv/ns/service.c	(revision c3fa24e7606bbff6faa8076d0fea703c4dbca192)
@@ -154,6 +154,5 @@
 {
 	async_exch_t *exch = async_exchange_begin(sess);
-	async_forward_fast(call, exch, iface, IPC_GET_ARG3(*call), 0,
-	    IPC_FF_NONE);
+	async_forward_1(call, exch, iface, IPC_GET_ARG3(*call), IPC_FF_NONE);
 	async_exchange_end(exch);
 }
Index: uspace/srv/vfs/vfs_ops.c
===================================================================
--- uspace/srv/vfs/vfs_ops.c	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/srv/vfs/vfs_ops.c	(revision c3fa24e7606bbff6faa8076d0fea703c4dbca192)
@@ -637,6 +637,6 @@
 
 	async_exch_t *exch = vfs_exchange_grab(node->fs_handle);
-	errno_t rc = async_data_read_forward_fast(exch, VFS_OUT_STAT,
-	    node->service_id, node->index, true, 0, NULL);
+	errno_t rc = async_data_read_forward_3_0(exch, VFS_OUT_STAT,
+	    node->service_id, node->index, true);
 	vfs_exchange_release(exch);
 
@@ -654,6 +654,6 @@
 
 	async_exch_t *exch = vfs_exchange_grab(node->fs_handle);
-	errno_t rc = async_data_read_forward_fast(exch, VFS_OUT_STATFS,
-	    node->service_id, node->index, false, 0, NULL);
+	errno_t rc = async_data_read_forward_3_0(exch, VFS_OUT_STATFS,
+	    node->service_id, node->index, false);
 	vfs_exchange_release(exch);