Index: uspace/srv/fs/devfs/devfs.c
===================================================================
--- uspace/srv/fs/devfs/devfs.c	(revision 991f645937e5e281d6996ad4623f9ab33c71916d)
+++ uspace/srv/fs/devfs/devfs.c	(revision 5581b46972ec913d0356783e55d0989fa3372729)
@@ -53,4 +53,6 @@
 static vfs_info_t devfs_vfs_info = {
 	.name = NAME,
+	.concurrent_read_write = false,
+	.write_retains_size = false,
 };