Re: [rfc 2/3] fs, proc: Introduce the Children: line in /proc/<pid>/status
On Thu, Dec 01, 2011 at 01:29:11PM -0800, Andrew Morton wrote: > > That's a potentially very long hold time for tasklist_lock, and > userspace can invoke this at a high frequency. Not good. > > I think this can all be done under rcu_read_lock() with > list_for_each_entry_rcu(). >