linux-kernel - Re: [PATCH 04/11] cgroup: use kzalloc() and list_del

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Message-ID: <CAOS58YOFHpgFXh2jCZHg-pdu0x_2NNUohahcJJi5YmeR6H+zHA@mail.gmail.com>
Date:	Wed, 12 Jun 2013 19:39:16 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Li Zefan <lizefan@...wei.com>
Cc:	containers@...ts.linux-foundation.org,
	Cgroups <cgroups@...r.kernel.org>,
	Kent Overstreet <koverstreet@...gle.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: [PATCH 04/11] cgroup: use kzalloc() and list_del_init()

Hello,

On Wed, Jun 12, 2013 at 7:36 PM, Li Zefan <lizefan@...wei.com> wrote:
> Do you mean we prefer list_del_init() than list_del() in general? Then

Yes.

> in which cases do we prefer list_del()?

Nowadays, I don't think we ever prefer list_del(). Maybe if it can be
shown that the extra init part is noticeably expensive?

--
tejun
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