[CRIU] [PATCH 1/3] cr-restore: "post-resume" hook introduced

[Stanislav Kinsburskiy]

06.04.2016 16:36, Andrew Vagin пишет:
> On Wed, Apr 06, 2016 at 12:01:48PM +0300, Stanislav Kinsburskiy wrote:
>> This hook is called at the very end, when everything is restored and processes
>> were resumed.
>> Can be used for some actions, which require operation container, like
>> restarting of systemd autofs services.
>>
>> Signed-off-by: Stanislav Kinsburskiy <skinsbursky at virtuozzo.com>
>> ---
>>   criu/action-scripts.c         |    1 +
>>   criu/cr-restore.c             |    4 ++++
>>   criu/include/action-scripts.h |    1 +
>>   criu/mount.c                  |    1 +
>>   4 files changed, 7 insertions(+)
>>
>> diff --git a/criu/action-scripts.c b/criu/action-scripts.c
>> index 05aa9d0..b1f7952 100644
>> --- a/criu/action-scripts.c
>> +++ b/criu/action-scripts.c
>> @@ -20,6 +20,7 @@ static const char *action_names[ACT_MAX] = {
>>   	[ ACT_NET_UNLOCK ]	= "network-unlock",
>>   	[ ACT_SETUP_NS ]	= "setup-namespaces",
>>   	[ ACT_POST_SETUP_NS ]	= "post-setup-namespaces",
>> +	[ ACT_POST_RESUME ]	= "post-resume",
>>   };
>>   
>>   int run_scripts(enum script_actions act)
>> diff --git a/criu/cr-restore.c b/criu/cr-restore.c
>> index 0720c07..2b11b71 100644
>> --- a/criu/cr-restore.c
>> +++ b/criu/cr-restore.c
>> @@ -2198,6 +2198,10 @@ static int restore_root_task(struct pstree_item *init)
>>   	if (!opts.restore_detach && !opts.exec_cmd)
>>   		wait(NULL);
> Here we are waiting when the root if opts.restore_detach isn't set. If
> we passed this code, this means that the root task completed.
>
> ACT_POST_RESUME should be called before waiting the root task.

Sorry, I don't understand. Could you elaborate? "When the root" what? 
And what does "root task completed" means?