[PATCH 6/9] cgroup: make rebind_subsystems() handle file additions and removals with proper error handling
Li Zefan
lizefan at huawei.com
Thu Jul 11 07:09:46 UTC 2013
> @@ -1651,26 +1647,32 @@ static struct dentry *cgroup_mount(struct file_system_type *fs_type,
> if (ret)
> goto unlock_drop;
>
> + sb->s_root->d_fsdata = root_cgrp;
> + root_cgrp->dentry = sb->s_root;
> +
> + cred = override_creds(&init_cred);
> +
> + ret = cgroup_addrm_files(root_cgrp, NULL, cgroup_base_files, true);
> + if (ret)
> + goto rm_base_files;
if (ret) {
free_cgrp_cset_links(&tmp_links);
goto ...
}
> +
> ret = rebind_subsystems(root, root->subsys_mask, 0);
> - if (ret == -EBUSY) {
> + if (ret) {
> free_cgrp_cset_links(&tmp_links);
> - goto unlock_drop;
> + goto rm_base_files;
> }
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