tree 719622960d2ec96473636333ddc8b85ab8151505
parent a7472baba22dd5d68580f528374f93421b33667e
author Al Viro <viro@zeniv.linux.org.uk> 1299267877 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1300108526 -0400

get rid of the last LOOKUP_RCU dependencies in link_path_walk()

New helper: terminate_walk().  An error has happened during pathname
resolution and we either drop nd->path or terminate RCU, depending
the mode we had been in.  After that, nd is essentially empty.
Switch link_path_walk() to using that for cleanup.

Now the top-level logics in link_path_walk() is back to sanity.  RCU
dependencies are in the lower-level functions.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>