From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [RFC 4/5] MMC: Adjust unaligned write accesses. Date: Sun, 13 Mar 2011 15:54:37 +0100 Message-ID: <201103131554.38028.arnd@arndb.de> References: <1299718449-15172-1-git-send-email-andreiw@motorola.com> <201103111123.21063.arnd@arndb.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from moutng.kundenserver.de ([212.227.17.9]:64793 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751484Ab1CMOym (ORCPT ); Sun, 13 Mar 2011 10:54:42 -0400 In-Reply-To: Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Andrei Warkentin Cc: linux-mmc@vger.kernel.org On Sunday 13 March 2011 14:00:04 Andrei Warkentin wrote: > > If the latter two are not much different on the toshiba card, that > > would be a simpler implementation, and more likely to be useful on > > other cards. > > > > Revalidating the data now, along with some more tests, to get a better > picture. It seems the more data I get, the less it makes sense :(. I was already fearing that the change would only benefit low-level benchmarks. It certainly helps writing small chunks to the buffer that is meant for FAT32 directories, but at some point, the card will have to write back the entire logical erase block, so you might not be able to gain much in real-world workloads. Of course, I also have only a very limited understanding of the algorithm used in the Toshiba chip. Arnd