On Wed, 11 Oct 2017 18:19:38 -0400 Gargi Sharma <[email protected]> wrote:
> This patch replaces the current bitmap implemetation for > Process ID allocation. Functions that are no longer required, > for example, free_pidmap(), alloc_pidmap(), etc. are removed. > The rest of the functions are modified to use the IDR API. > The change was made to make the PID allocation less complex by > replacing custom code with calls to generic API. I still don't understand the locking. spin_lock_irq(&pidmap_lock) in some places, rcu_read_lock() in others. If the locking is indeed now correct, can we please get it fully documented? A comment at the pid_namespace.idr definition site would suit.
