[lxc-devel] Remove explicit process_unlock()s after each fork()

[Andrey Mazo]

The following patch attempts to address Serge's comment [1] on
the (already merged) excessive process_lock() removal patch series.
It kills most of remaining process_unlock()s eliminating the need
to explicitly unlock mutexes after each fork().
The approach was first mentioned in [2].

[1] http://lists.linuxcontainers.org/pipermail/lxc-devel/2013-December/006735.html
[2] http://lists.linuxcontainers.org/pipermail/lxc-devel/2013-December/006751.html

--
Andrey Mazo.