Re: [PATCH 04/11] cgroup: use kzalloc() and list_del_init()

From: Kent Overstreet
Date: Wed Jun 12 2013 - 22:38:41 EST

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.
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