From: Robert Love <rml@novell.com>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Linux Kernel List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@osdl.org>,
Al Viro <viro@ftp.linux.org.uk>
Subject: Re: p = kmalloc(sizeof(*p), )
Date: Sun, 18 Sep 2005 12:32:26 -0400 [thread overview]
Message-ID: <1127061146.6939.6.camel@phantasy> (raw)
In-Reply-To: <20050918100627.GA16007@flint.arm.linux.org.uk>
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.
Robert Love
next prev parent reply other threads:[~2005-09-18 16:32 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 [this message]
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
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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