From: DM <dm.n9107@gmail.com>
To: davids@webmaster.com
Cc: torvalds@linux-foundation.org,
"Johannes Weiner" <hannes@saeurebad.de>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
clameter@sgi.com, penberg@cs.helsinki.fi
Subject: Re: Why is the kfree() argument const?
Date: Fri, 18 Jan 2008 19:06:28 +0100 [thread overview]
Message-ID: <5eeb9ad90801181006r300e23e6t39159f1c1ccde0af@mail.gmail.com> (raw)
In-Reply-To: <MDEHLPKNGKAHNMBLJOLKKEKDJJAC.davids@webmaster.com>
On Jan 18, 2008 6:02 AM, David Schwartz <davids@webmaster.com> wrote:
>
> However, *destroying* an object is not a metadata operation -- it destroys
> the data as well. This is kind of a philosophical point, but an object does
> not have a "does this object exist" piece of metadata. If an object does not
> exist, it has no data. So destroying an object destroys the data and is thus
> a write/modification operation on the data.
>
In C++ you can delete a const pointer. Now I know kernel hackers
aren't especially impressed with C++ but maybe someone could look up
the rationale for that design decision (I couldn't find it). It might
shed some light on this discussion.
/DM
next prev parent reply other threads:[~2008-01-18 18:06 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <MDEHLPKNGKAHNMBLJOLKIEGIJJAC.davids@webmaster.com>
2008-01-17 21:25 ` Why is the kfree() argument const? Linus Torvalds
2008-01-17 22:28 ` David Schwartz
2008-01-17 23:10 ` Linus Torvalds
2008-01-18 0:56 ` David Schwartz
2008-01-18 1:15 ` Linus Torvalds
2008-01-18 5:02 ` David Schwartz
2008-01-18 15:38 ` Chris Friesen
2008-01-18 16:10 ` Linus Torvalds
2008-01-18 20:55 ` David Schwartz
2008-01-18 17:37 ` Olivier Galibert
2008-01-18 18:06 ` DM [this message]
2008-01-18 7:51 ` Giacomo Catenazzi
2008-01-18 8:20 ` Giacomo Catenazzi
2008-01-18 13:53 ` Andy Lutomirski
2008-01-18 17:24 ` Olivier Galibert
2008-01-18 22:29 ` J.A. Magallón
2008-01-18 23:44 ` Krzysztof Halasa
2008-01-18 13:54 ` Andy Lutomirski
2008-01-18 19:14 ` Vadim Lobanov
2008-01-18 19:31 ` Zan Lynx
2008-01-18 19:55 ` Vadim Lobanov
2008-01-18 8:30 ` Vadim Lobanov
2008-01-18 9:48 ` Jakob Oestergaard
2008-01-18 11:47 ` Giacomo A. Catenazzi
2008-01-18 14:39 ` Jakob Oestergaard
2008-01-18 19:06 ` Vadim Lobanov
2008-01-18 13:31 ` Björn Steinbrink
2008-01-18 14:53 ` Jakob Oestergaard
[not found] <fa.cHMztHfqJXv7vw5O0nQ8SdTrma0@ifi.uio.no>
[not found] ` <fa.V9M+5l8C/um5KEiBtZOjbJDQmu4@ifi.uio.no>
2013-01-12 19:18 ` antoine.trux
2013-01-13 8:10 ` Chen Gang F T
2013-01-13 17:41 ` Guenter Roeck
2013-01-14 1:45 ` Chen Gang F T
2013-01-13 20:54 ` Cong Ding
2013-01-14 1:18 ` Chen Gang F T
2008-01-18 19:10 ecolbus
-- strict thread matches above, loose matches on Subject: below --
2008-01-18 16:45 ecolbus
2008-01-18 18:20 ` Olivier Galibert
2008-01-18 12:45 ecolbus
2008-01-18 15:20 ` Giacomo A. Catenazzi
2008-01-16 16:32 Johannes Weiner
2008-01-16 16:48 ` Christoph Lameter
2008-01-16 17:34 ` Bernd Petrovitsch
2008-01-16 17:45 ` Pekka J Enberg
2008-01-16 18:39 ` Linus Torvalds
2008-01-16 22:19 ` Johannes Weiner
2008-01-16 22:20 ` Christoph Lameter
2008-01-16 22:37 ` Johannes Weiner
2008-01-16 23:13 ` Johannes Weiner
2008-01-16 23:18 ` Linus Torvalds
2008-01-16 23:16 ` Linus Torvalds
2008-01-16 22:33 ` Steven Rostedt
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