[PATCH] fix cgroup procs documentation

[KAMEZAWA Hiroyuki]

2.6.33's Documentation has the same wrong information. So, I CC'ed to stable.
If people believe this information, they'll usr cgroup.procs file and will
see cgroup doesn'w work as expected.
The patch itself is against -mm.

==
Writing to cgroup.procs is not supported now.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
---
 Documentation/cgroups/cgroups.txt |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Index: mmotm-temp/Documentation/cgroups/cgroups.txt
===================================================================
--- mmotm-temp.orig/Documentation/cgroups/cgroups.txt
+++ mmotm-temp/Documentation/cgroups/cgroups.txt
@@ -235,8 +235,7 @@ containing the following files describin
  - cgroup.procs: list of tgids in the cgroup.  This list is not
    guaranteed to be sorted or free of duplicate tgids, and userspace
    should sort/uniquify the list if this property is required.
-   Writing a tgid into this file moves all threads with that tgid into
-   this cgroup.
+   This is a read-only file, now.
  - notify_on_release flag: run the release agent on exit?
  - release_agent: the path to use for release notifications (this file
    exists in the top cgroup only)

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