cgroups: remove the css_set linked-list

Now we can run through the hash table instead of running through the
linked-list.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
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>

1 files changed, 0 insertions, 6 deletions

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index f585b7cde87b..d58a958444ab 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -150,12 +150,6 @@ struct css_set {
         struct kref ref;
 
         /*
-         * List running through all cgroup groups. Protected by
-         * css_set_lock
-         */
-        struct list_head list;
-
-        /*
          * List running through all cgroup groups in the same hash
          * slot. Protected by css_set_lock
          */