tree 834722d850b2f6a82a07464680244847ed477755
parent ce0525449da56444948c368f52e10f3db0465338
author Al Viro <viro@zeniv.linux.org.uk> 1300154095 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1300223785 -0400

Turn resolution of trailing symlinks iterative everywhere

The last remaining place (resolution of nested symlink) converted
to the loop of the same kind we have in path_lookupat() and
path_openat().

Note that we still *do* have a recursion in pathname resolution;
can't avoid it, really.  However, it's strictly for nested symlinks
now - i.e. ones in the middle of a pathname.

link_path_walk() has lost the tail now - it always walks everything
except the last component.

do_follow_link() renamed to nested_symlink() and moved down.

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