--- kernel/nthread.c.orig	2014-10-30 11:29:21.000000000 -0700
+++ kernel/nthread.c	2014-10-30 11:30:14.000000000 -0700
@@ -91,7 +91,7 @@
 		return 0;
 #endif
 
-	error = soo_ioctl(&filetmp, FIONREAD, &avail, NULL, curthread);
+	error = fo_ioctl(&filetmp, FIONREAD, &avail, NULL, curthread);
 	if (error)
 		return 0;
 
@@ -350,7 +350,7 @@
 	filetmp.f_data = conn->sock;
 	filetmp.f_cred = NULL;
 
-	error = soo_ioctl(&filetmp, FIONSPACE, &avail, NULL, curthread);
+	error = fo_ioctl(&filetmp, FIONSPACE, &avail, NULL, curthread);
 	if (error)
 		return 0;