From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kent Overstreet <koverstreet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH 04/11] cgroup: use kzalloc() and list_del_init()
Date: Wed, 12 Jun 2013 19:38:31 -0700
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To: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Cc: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, cl-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
List-Id: containers.vger.kernel.org

On Thu, Jun 13, 2013 at 10:36:40AM +0800, Li Zefan wrote:
> On 2013/6/13 5:03, Tejun Heo wrote:
> > There's no point in using kmalloc() and list_del() instead of the
> > clearing variants for trivial stuff.  We can live dangerously
> > elsewhere.  Use kzalloc() and list_del_init() instead and drop 0
> > inits.
> > 
> 
> Do you mean we prefer list_del_init() than list_del() in general? Then
> in which cases do we prefer list_del()?

IMO, list_del() is preferred when the object shouldn't be reused (i.e.
it gets taken off a list and then it's freed). list_del_init() could
hide bugs.