From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joe Perches Subject: Re: [PATCH 1/1 net-next] net: dsa: replace count*size kmalloc by kmalloc_array Date: Fri, 14 Nov 2014 11:14:46 -0800 Message-ID: <1415992486.5912.23.camel@perches.com> References: <1415990202-28673-1-git-send-email-fabf@skynet.be> <1415990835.5912.20.camel@perches.com> <2104595537.56209.1415991758726.open-xchange@webmail.nmp.skynet.be> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "David S. Miller" To: Fabian Frederick Return-path: In-Reply-To: <2104595537.56209.1415991758726.open-xchange@webmail.nmp.skynet.be> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 2014-11-14 at 20:02 +0100, Fabian Frederick wrote: > On 14 November 2014 at 19:47 Joe Perches wrote: > > On Fri, 2014-11-14 at 19:36 +0100, Fabian Frederick wrote: > > > kmalloc_array manages count*sizeof overflow. > > > > Fundamentally correct, but is this necessary or useful? > > sizeof(s8) isn't often going to be anything other than 1. > Absolutely, I thought it was a struct :) > > There must be a reason for so many cases though ... Some might be style symmetry for other sizeof(othertype) uses in the same paths, but most of them are just overkill or maybe lack of understanding. s8 is char so by definition it has to be 1. I doubt any of the code dates from PDP-8/TOPS-10 days.