tree 2b851ad65356da182610d0cb0bff5b1b22824ae8
parent de9b9422026357c878a9fa3714936be0e1388e9c
author Al Viro <viro@zeniv.linux.org.uk> 1342618370 +0400
committer Al Viro <viro@zeniv.linux.org.uk> 1342987245 +0400

unobfuscate follow_up() a bit

really convoluted test in there has grown up during struct mount
introduction; what it checks is that we'd reached the root of
mount tree.