On Wed, Feb 14, 2018 at 10:13 PM, Enrico Weigelt <l...@metux.net> wrote: > Hi folks, > > > in fork.c, a spinlock is held for fs_struct refcounting, while other > places - eg. switch_task_namespaces uses atomic_dec_and_test() on > the nsproxy. > > What's the exact difference here ? Could the atomic counting also used > for fs_struct ?
Well, the spinlock protects more than just the counter. So atomic won't do it. -- Thanks, //richard
