linux-next/Documentation
Cyrill Gorcunov 818411616b fs, proc: introduce /proc/<pid>/task/<tid>/children entry
When we do checkpoint of a task we need to know the list of children the
task, has but there is no easy and fast way to generate reverse
parent->children chain from arbitrary <pid> (while a parent pid is
provided in "PPid" field of /proc/<pid>/status).

So instead of walking over all pids in the system (creating one big
process tree in memory, just to figure out which children a task has) --
we add explicit /proc/<pid>/task/<tid>/children entry, because the kernel
already has this kind of information but it is not yet exported.

This is a first level children, not the whole process tree.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-31 17:49:32 -07:00
..
2012-05-29 16:22:32 -07:00
2012-05-26 13:05:55 -07:00
2011-09-27 18:08:04 +02:00
2010-02-24 13:51:32 +01:00
2012-04-03 13:09:18 +02:00
2012-03-28 18:43:38 +01:00
2011-09-27 18:08:04 +02:00
2012-05-23 14:15:09 -07:00
2011-03-31 11:26:23 -03:00
2011-03-31 11:26:23 -03:00
2012-05-15 17:28:01 -04:00
2011-09-27 18:08:04 +02:00
2012-05-23 14:07:06 -07:00
2012-04-14 11:13:22 +10:00
2011-11-02 16:07:02 -07:00
2012-05-23 13:05:43 -07:00
2011-03-31 11:26:23 -03:00
2011-09-27 18:08:04 +02:00
2011-03-31 11:26:23 -03:00
2010-04-08 11:34:34 +02:00
2008-12-03 16:09:53 -07:00
2008-07-25 10:53:30 -07:00
2012-03-16 20:35:01 +00:00
2011-03-31 11:26:23 -03:00
2008-03-24 19:22:19 -07:00
2011-03-31 11:26:23 -03:00
2011-09-27 18:08:04 +02:00
2009-07-01 22:36:22 +02:00
2011-03-07 13:20:05 -08:00
2009-04-27 12:00:27 -07:00
2009-04-27 12:00:27 -07:00
2011-09-27 18:08:04 +02:00
2012-02-28 16:05:06 +01:00
2012-05-17 08:51:59 -07:00
2011-09-27 18:08:04 +02:00
2011-03-31 11:26:23 -03:00
2010-07-19 10:56:54 +02:00
2010-03-16 11:47:56 +01:00
2012-01-02 13:04:55 +01:00