mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-09 14:43:16 +00:00
a77aea9201
The ns_cgroup is an annoying cgroup at the namespace / cgroup frontier and
leads to some problems:
* cgroup creation is out-of-control
* cgroup name can conflict when pids are looping
* it is not possible to have a single process handling a lot of
namespaces without falling in a exponential creation time
* we may want to create a namespace without creating a cgroup
The ns_cgroup was replaced by a compatibility flag 'clone_children',
where a newly created cgroup will copy the parent cgroup values.
The userspace has to manually create a cgroup and add a task to
the 'tasks' file.
This patch removes the ns_cgroup as suggested in the following thread:
https://lists.linux-foundation.org/pipermail/containers/2009-June/018616.html
The 'cgroup_clone' function is removed because it is no longer used.
This is a userspace-visible change. Commit 45531757b45c ("cgroup: notify
ns_cgroup deprecated") (merged into 2.6.27) caused the kernel to emit a
printk warning users that the feature is planned for removal. Since that
time we have heard from XXX users who were affected by this.
Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Jamal Hadi Salim <hadi@cyberus.ca>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Acked-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
67 lines
748 B
C
67 lines
748 B
C
/* Add subsystem definitions of the form SUBSYS(<name>) in this
|
|
* file. Surround each one by a line of comment markers so that
|
|
* patches don't collide
|
|
*/
|
|
|
|
/* */
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CPUSETS
|
|
SUBSYS(cpuset)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CGROUP_DEBUG
|
|
SUBSYS(debug)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CGROUP_SCHED
|
|
SUBSYS(cpu_cgroup)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CGROUP_CPUACCT
|
|
SUBSYS(cpuacct)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CGROUP_MEM_RES_CTLR
|
|
SUBSYS(mem_cgroup)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CGROUP_DEVICE
|
|
SUBSYS(devices)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_CGROUP_FREEZER
|
|
SUBSYS(freezer)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_NET_CLS_CGROUP
|
|
SUBSYS(net_cls)
|
|
#endif
|
|
|
|
/* */
|
|
|
|
#ifdef CONFIG_BLK_CGROUP
|
|
SUBSYS(blkio)
|
|
#endif
|
|
|
|
#ifdef CONFIG_CGROUP_PERF
|
|
SUBSYS(perf)
|
|
#endif
|
|
|
|
/* */
|