From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Cc: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>,
KAMEZAWA Hiroyuki
<kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org
Subject: Re: [PATCH v3 1/8] cgroup: convert cgroup_ida to cgroup_idr
Date: Mon, 29 Jul 2013 14:28:35 -0400 [thread overview]
Message-ID: <20130729182835.GD26076@mtj.dyndns.org> (raw)
In-Reply-To: <51F614C4.7060602-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Hello,
On Mon, Jul 29, 2013 at 03:07:48PM +0800, Li Zefan wrote:
> @@ -4590,6 +4599,9 @@ static void cgroup_offline_fn(struct work_struct *work)
> /* delete this cgroup from parent->children */
> list_del_rcu(&cgrp->sibling);
>
> + if (cgrp->id)
> + idr_remove(&cgrp->root->cgroup_idr, cgrp->id);
> +
Yeap, if we're gonna allow lookups, removal should happen here but can
we please add short comment explaining why that is? Also, do we want
to clear cgrp->id?
Thanks.
--
tejun
next prev parent reply other threads:[~2013-07-29 18:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-29 7:07 [PATCH v3 0/8] memcg, cgroup: kill css_id Li Zefan
[not found] ` <51F614B2.6010503-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-07-29 7:07 ` [PATCH v3 1/8] cgroup: convert cgroup_ida to cgroup_idr Li Zefan
[not found] ` <51F614C4.7060602-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-07-29 18:28 ` Tejun Heo [this message]
2013-07-30 1:10 ` Li Zefan
2013-07-30 14:21 ` Tejun Heo
2013-07-29 7:09 ` [PATCH v3 6/8] memcg: fail to create cgroup if the cgroup id is too big Li Zefan
2013-07-29 7:09 ` [PATCH v3 7/8] memcg: stop using css id Li Zefan
2013-07-29 7:08 ` [PATCH v3 2/8] cgroup: document how cgroup IDs are assigned Li Zefan
2013-07-29 18:26 ` Tejun Heo
[not found] ` <20130729182632.GC26076-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2013-07-30 1:08 ` Li Zefan
2013-07-30 14:22 ` Tejun Heo
2013-07-29 7:08 ` [PATCH v3 3/8] cgroup: implement cgroup_from_id() Li Zefan
2013-07-29 18:31 ` Tejun Heo
2013-07-29 7:08 ` [PATCH v3 4/8] memcg: convert to use cgroup_is_descendant() Li Zefan
2013-07-29 7:08 ` [PATCH v3 5/8] memcg: convert to use cgroup id Li Zefan
2013-07-29 7:10 ` [PATCH v3 8/8] cgroup: kill css_id Li Zefan
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