Index: uspace/lib/libfs/libfs.c
===================================================================
--- uspace/lib/libfs/libfs.c	(revision 1e50f814269823038978ee8494d061f3844bf4b0)
+++ uspace/lib/libfs/libfs.c	(revision dadcec1dfd773eb63e3a2420db90b31207fcc6a2)
@@ -124,4 +124,7 @@
 
 /** Lookup VFS triplet by name in the file system name space.
+ *
+ * The path passed in the PLB must be in the canonical file system path format
+ * as returned by the canonify() function.
  *
  * @param ops		libfs operations structure with function pointers to