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From: "Jörn Engel" <joern@logfs.org>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Chris Mason <chris.mason@fusionio.com>,
	linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 1/2] list: add list_for_each_entry_del
Date: Thu, 6 Jun 2013 14:12:48 -0400	[thread overview]
Message-ID: <20130606181248.GA17707@logfs.org> (raw)
In-Reply-To: <CAHp75VczX+tjqJgNv4uv=BRekm2Gc2i8WHL91vJFWSXWS8-J_A@mail.gmail.com>

On Thu, 6 June 2013 22:32:55 +0300, Andy Shevchenko wrote:
> On Mon, Jun 3, 2013 at 8:28 PM, Joern Engel <joern@logfs.org> wrote:
> > I have seen a lot of boilerplate code that either follows the pattern of
> >         while (!list_empty(head)) {
> >                 pos = list_entry(head->next, struct foo, list);
> >                 list_del(pos->list);
> >                 ...
> >         }
> > or some variant thereof.
> 
> What the problem to use list_for_each_safe()?

The loop may terminate with elements left on the list.  There is more,
but I would consider this the main problem.

Jörn

--
If you're willing to restrict the flexibility of your approach,
you can almost always do something better.
-- John Carmack

  reply	other threads:[~2013-06-06 19:42 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-03 17:28 [PATCH 0/2] introduce list_for_each_entry_del Joern Engel
2013-06-03 17:28 ` [PATCH 1/2] list: add list_for_each_entry_del Joern Engel
2013-06-06 19:32   ` Andy Shevchenko
2013-06-06 18:12     ` Jörn Engel [this message]
2013-06-06 19:49       ` Andy Shevchenko
2013-06-07 16:36         ` Jörn Engel
2013-06-07 18:30           ` Andy Shevchenko
2013-06-07 18:48             ` Jörn Engel
2013-06-08  0:03               ` Andy Shevchenko
2013-06-03 17:28 ` [PATCH 2/2] btrfs: use list_for_each_entry_del Joern Engel
2013-06-03 18:07 ` [PATCH 0/2] introduce list_for_each_entry_del Jörn Engel
2013-06-03 20:49 ` Christoph Hellwig
2013-06-03 19:36   ` Jörn Engel
2013-06-03 19:55     ` Jörn Engel
2013-06-04 14:48       ` Christoph Hellwig
2013-06-04 14:53         ` Chris Mason
2013-06-04 20:09           ` Arne Jansen
2013-06-04 18:44             ` Jörn Engel
2013-06-05  2:03               ` [PATCH 1/2] list: add while_list_drain_entry Jörn Engel
2013-06-05 14:32                 ` David Sterba
2013-06-05  2:04               ` [PATCH 2/2] btrfs: use while_list_drain_entry Jörn Engel
2013-06-05  2:09               ` [PATCH 0/2] introduce list_for_each_entry_del Jörn Engel
2013-06-05  6:53                 ` Arne Jansen
2013-06-05 14:25                   ` David Sterba
2013-07-05 20:41 ` Jörn Engel
2013-07-05 20:41   ` [PATCH 1/2] list: add list_del_each_entry Jörn Engel
2013-07-05 22:38     ` Filipe David Manana
2013-07-15 17:35       ` Jörn Engel
2013-07-05 20:41   ` [PATCH 2/2] btrfs: use list_del_each_entry Jörn Engel
2013-07-08  4:37   ` [PATCH 0/2] introduce list_for_each_entry_del Dave Chinner

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