namei.c: take "jump to root" into a new helper

... and use it both in path_init() (for absolute pathnames) and
get_link() (for absolute symlinks).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-12-05 20:51:58 -05:00
commit 248fb5b955