On Mon, Jan 31, 2011 at 12:25 PM, Daniel Lezcano<daniel.lezcano@xxxxxxx> wrote:The expressions tsk->nsproxy->pid_ns and task_active_pid_nsYet current->nsproxy->pid_ns is way clearer.
aka ns_of_pid(task_pid(tsk)) should have the same number of
cache line misses with the practical difference that
ns_of_pid(task_pid(tsk)) is released later in a processes life.
Furthermore by using task_active_pid_ns it becomes trivial
to write an unshare implementation for the the pid namespace.
So I have used task_active_pid_ns everywhere I can.
Because live current always has pid_ns.
This task_active_pid_ns() is misnamed(?) because it does matter only
for dead tasks?
- current->nsproxy->pid_ns->last_pid);I thought of doing exactly opposite patch :-)