From: Tejun Heo Date: Sat, 8 Feb 2014 15:37:01 +0000 (-0500) Subject: cgroup: remove cgroup_root_mutex X-Git-Tag: v3.15-rc1~109^2~72 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3417ae1f5f59bbf36c3defbbf2a76c5ca498db2a;p=pandora-kernel.git cgroup: remove cgroup_root_mutex cgroup_root_mutex was added to avoid deadlock involving namespace_sem via cgroup_show_options(). It added a lot of overhead for the small purpose of it and, because it's nested under cgroup_mutex, it has very limited usefulness. The previous patch made cgroup_show_options() not use cgroup_root_mutex, so nobody needs it anymore. Remove it. Signed-off-by: Tejun Heo Acked-by: Li Zefan --- Reading git-diff-tree failed