From: "Randy.Dunlap" <rdunlap@xenotime.net>
To: Robert Love <rml@novell.com>
Cc: rmk+lkml@arm.linux.org.uk, linux-kernel@vger.kernel.org,
torvalds@osdl.org, viro@ftp.linux.org.uk
Subject: Re: p = kmalloc(sizeof(*p), )
Date: Sun, 18 Sep 2005 10:32:34 -0700 [thread overview]
Message-ID: <20050918103234.0b923c73.rdunlap@xenotime.net> (raw)
In-Reply-To: <1127061146.6939.6.camel@phantasy>
On Sun, 18 Sep 2005 12:32:26 -0400 Robert Love wrote:
> On Sun, 2005-09-18 at 11:06 +0100, Russell King wrote:
>
> > +The preferred form for passing a size of a struct is the following:
> > +
> > + p = kmalloc(sizeof(*p), ...);
> > +
> > +The alternative form where struct name is spelled out hurts readability and
> > +introduces an opportunity for a bug when the pointer variable type is changed
> > +but the corresponding sizeof that is passed to a memory allocator is not.
>
> Agreed.
>
> Also, after Alan's #4:
>
> 5. Contrary to the above statement, such coding style does not help,
> but in fact hurts, readability. How on Earth is sizeof(*p) more
> readable and information-rich than sizeof(struct foo)? It looks
> like the remains of a 5,000 year old wolverine's spleen and
> conveys no information about the type of the object that is being
> created.
I also dislike & disagree with the CodingStyle addition....
---
~Randy
You can't do anything without having to do something else first.
-- Belefant's Law
next prev parent reply other threads:[~2005-09-18 17:32 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-18 10:06 p = kmalloc(sizeof(*p), ) Russell King
2005-09-18 11:04 ` Alan Cox
2005-09-18 14:39 ` Al Viro
2005-09-18 16:25 ` Denis Vlasenko
2005-09-18 17:30 ` Al Viro
2005-09-18 18:00 ` Willy Tarreau
2005-09-18 17:47 ` Alan Cox
2005-09-18 16:32 ` Robert Love
2005-09-18 16:52 ` Willy Tarreau
2005-09-18 17:18 ` Al Viro
2005-09-18 17:31 ` Linus Torvalds
2005-09-18 17:45 ` Al Viro
2005-09-18 20:34 ` Roman Zippel
2005-09-18 21:12 ` Al Viro
2005-09-18 21:52 ` Al Viro
2005-09-18 22:25 ` Linus Torvalds
2005-09-18 23:07 ` Al Viro
2005-09-20 6:31 ` Richard Henderson
2005-09-19 21:20 ` Matthias Urlichs
2005-09-19 21:28 ` Matthias Urlichs
2005-09-18 19:07 ` Al Viro
2005-09-18 21:30 ` Alan Cox
2005-09-18 21:14 ` Al Viro
2005-09-19 6:09 ` Coywolf Qi Hunt
2005-09-21 2:18 ` Miles Bader
2005-09-18 17:32 ` Randy.Dunlap [this message]
2005-09-19 6:47 ` Coywolf Qi Hunt
2005-09-20 8:53 ` Pekka Enberg
2005-09-20 9:39 ` Al Viro
2005-09-20 9:47 ` Pekka J Enberg
2005-09-20 9:53 ` Al Viro
2005-09-20 10:07 ` Pekka J Enberg
2005-09-20 15:14 ` Randy.Dunlap
2005-09-20 11:18 ` Pekka Enberg
2005-09-20 11:40 ` Russell King
2005-09-20 11:56 ` Denis Vlasenko
2005-09-20 12:20 ` Pekka J Enberg
2005-09-20 12:31 ` Russell King
2005-09-20 12:35 ` Pekka J Enberg
2005-09-20 15:21 ` Randy.Dunlap
2005-09-20 12:53 ` Pekka J Enberg
2005-09-20 17:11 ` Andrew Morton
2005-09-20 17:17 ` Russell King
2005-09-20 18:02 ` Alan Cox
2005-09-20 17:59 ` Andrew Morton
2005-09-20 18:11 ` Russell King
2005-09-20 18:41 ` Jeff Garzik
2005-09-20 20:41 ` Alan Cox
2005-09-20 19:41 ` Horst von Brand
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