From: Tejun Heo Date: Wed, 23 Apr 2014 15:13:14 +0000 (-0400) Subject: cgroup: cgroup_apply_cftypes() shouldn't skip the default hierarhcy X-Git-Tag: omap-for-v3.16/fixes-against-rc1~81^2~79 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea8fd3b47ff4ed4b1b5942bf3e0cb8d8f590ec59;p=pandora-kernel.git cgroup: cgroup_apply_cftypes() shouldn't skip the default hierarhcy cgroup_apply_cftypes() skip creating or removing files if the subsystem is attached to the default hierarchy, which led to missing files in the root of the default hierarchy. Skipping made sense when the default hierarchy was dummy; however, now that the default hierarchy is full functional and planned to be used as the unified hierarchy, it shouldn't be skipped over. Reported-by: Li Zefan Signed-off-by: Tejun Heo Acked-by: Li Zefan --- diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 11a03d67635a..a6894272353b 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2436,10 +2436,6 @@ static int cgroup_apply_cftypes(struct cftype *cfts, bool is_add) lockdep_assert_held(&cgroup_tree_mutex); - /* don't bother if @ss isn't attached */ - if (ss->root == &cgrp_dfl_root) - return 0; - /* add/rm files for all cgroups created before */ css_for_each_descendant_pre(css, cgroup_css(root, ss)) { struct cgroup *cgrp = css->cgroup;