On Fri, Jul 12, 2019 at 02:25:53PM +0100, Al Viro wrote:
if (flags & LOOKUP_BENEATH) {
nd->root = nd->path;
if (!(flags & LOOKUP_RCU))
path_get(&nd->root);
else
nd->root_seq = nd->seq;
BTW, this assignment is needed for LOOKUP_RCU case. Without it you are pretty much guaranteed that lazy pathwalk will fail, when it comes to complete_walk(). Speaking of which, what would happen if LOOKUP_ROOT/LOOKUP_BENEATH combination would someday get passed?
