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a77aea9201
linux/arch/mn10300
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Daniel Lezcano a77aea9201 cgroup: remove the ns_cgroup 
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 45531757b4 ("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>
2011-05-26 17:12:34 -07:00
..
boot
configs cgroup: remove the ns_cgroup 2011-05-26 17:12:34 -07:00
include/asm Fix common misspellings 2011-03-31 11:26:23 -03:00
kernel mn10300: convert old cpumask API into new one 2011-05-25 08:39:39 -07:00
lib
mm mn10300: convert old cpumask API into new one 2011-05-25 08:39:39 -07:00
oprofile
proc-mn2ws0050 MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
proc-mn103e010 MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
unit-asb2303
unit-asb2305
unit-asb2364 mn10300: Convert genirq namespace 2011-03-29 14:48:18 +02:00
Kconfig genirq: Remove the now obsolete config options and select statements 2011-03-30 14:13:23 +02:00
Kconfig.debug MN10300: Deprecate gdbstub 2011-03-18 16:54:32 +00:00
Makefile