tree f4745174c126231bbd2c4a652d37f086ad035e3c
parent 11a7b371b64ef39fc5fb1b6f2218eef7c4d035e3
author Al Viro <viro@zeniv.linux.org.uk> 1300060738 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1300223780 -0400

pull handling of one pathname component into a helper

new helper: walk_component().  Handles everything except symlinks;
returns negative on error, 0 on success and 1 on symlinks we decided
to follow.  Drops out of RCU mode on such symlinks.

link_path_walk() and do_last() switched to using that.

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