linux-kernel - Re: Uninline kcalloc

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Message-ID: <alpine.DEB.2.00.1202141503470.29019@router.home>
Date:	Tue, 14 Feb 2012 15:09:18 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Pekka Enberg <penberg@...nel.org>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Xi Wang <xi.wang@...il.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Jesper Juhl <jj@...osbits.net>, Jens Axboe <axboe@...nel.dk>,
	linux-kernel@...r.kernel.org, Matt Mackall <mpm@...enic.com>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: Uninline kcalloc

On Tue, 14 Feb 2012, Pekka Enberg wrote:

> Me neither. I don't think Christoph's SAFE_ARRAY_SIZE() suggestion
> makes much sense, really. It's more verbose, less obvious API, and
> doesn't really deal with the overflow case cleanly.

IMHO Having a function to deal with the overflow of a multiplication and
then do an allocation based on the result is a conflation of two different
things that need to be separate. kcalloc only exists because there is
an ancient user space function that somehow got a second parameter instead
of just using the same as malloc().



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