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cgroup: make ->pre_destroy() return void

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All ->pre_destory() implementations return 0 now, which is the only
allowed return value.  Make it return void.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
This commit is contained in:
Tejun Heo 2012-11-05 09:16:59 -08:00
parent 9d093cb10e
commit bcf6de1b91
5 changed files with 5 additions and 9 deletions
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2
kernel/cgroup.c
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@ -4054,7 +4054,7 @@ static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry)
mutex_unlock(&cgroup_mutex);
for_each_subsys(cgrp->root, ss)
if (ss->pre_destroy)
WARN_ON_ONCE(ss->pre_destroy(cgrp));
ss->pre_destroy(cgrp);
mutex_lock(&cgroup_mutex);
/*