pid: Handle the exit of a multi-threaded init.

When a multi-threaded init exits and the initial thread is not the
last thread to exit the initial thread hangs around as a zombie
until the last thread exits.  In that case zap_pid_ns_processes
needs to wait until there are only 2 hashed pids in the pid
namespace not one.

v2. Replace thread_pid_vnr(me) == 1 with the test thread_group_leader(me)
    as suggested by Oleg.

Cc: [email protected]
Cc: Oleg Nesterov <[email protected]>
Reported-by: Caj Larsson <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>

0 files changed, 0 insertions, 0 deletions