From: Minchan Kim <minchan@kernel.org>
To: John Hubbard <jhubbard@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
gregkh@linuxfoundation.org, surenb@google.com,
joaodias@google.com, willy@infradead.org
Subject: Re: [PATCH v2] mm: cma: support sysfs
Date: Mon, 8 Feb 2021 20:19:02 -0800 [thread overview]
Message-ID: <YCINNpA09FTwr63U@google.com> (raw)
In-Reply-To: <43cd6fc4-5bc5-50ec-0252-ffe09afd68ea@nvidia.com>
On Mon, Feb 08, 2021 at 05:57:17PM -0800, John Hubbard wrote:
> On 2/8/21 3:36 PM, Minchan Kim wrote:
> ...
> > > > char name[CMA_MAX_NAME];
> > > > +#ifdef CONFIG_CMA_SYSFS
> > > > + struct cma_stat *stat;
> > >
> > > This should not be a pointer. By making it a pointer, you've added a bunch of pointless
> > > extra code to the implementation.
> >
> > Originally, I went with the object lifetime with struct cma as you
> > suggested to make code simple. However, Greg KH wanted to have
> > release for kobj_type since it is consistent with other kboject
> > handling.
>
> Are you talking about the kobj in your new struct cma_stat? That seems
> like circular logic if so. I'm guessing Greg just wanted kobj methods
> to be used *if* you are dealing with kobjects. That's a narrower point.
>
> I can't imagine that he would have insisted on having additional
> allocations just so that kobj freeing methods could be used. :)
I have no objection if Greg agree static kobject is okay in this
case. Greg?
next prev parent reply other threads:[~2021-02-09 4:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 18:01 [PATCH v2] mm: cma: support sysfs Minchan Kim
2021-02-08 21:34 ` John Hubbard
2021-02-08 23:36 ` Minchan Kim
2021-02-09 1:57 ` John Hubbard
2021-02-09 4:19 ` Minchan Kim [this message]
2021-02-09 5:18 ` John Hubbard
2021-02-09 5:27 ` John Hubbard
2021-02-09 6:13 ` Greg KH
2021-02-09 6:27 ` John Hubbard
2021-02-09 6:34 ` John Hubbard
2021-02-09 6:56 ` Greg KH
2021-02-09 15:55 ` Minchan Kim
2021-02-09 17:49 ` Greg KH
2021-02-09 20:11 ` John Hubbard
2021-02-09 21:13 ` Minchan Kim
2021-02-10 6:43 ` Greg KH
2021-02-10 7:12 ` Minchan Kim
2021-02-10 7:16 ` John Hubbard
2021-02-10 7:26 ` Greg KH
2021-02-10 7:50 ` John Hubbard
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