From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.nokia.com ([192.100.105.134] helo=mgw-mx09.nokia.com) by bombadil.infradead.org with esmtps (Exim 4.69 #1 (Red Hat Linux)) id 1N1DIv-0001OJ-4q for linux-mtd@lists.infradead.org; Fri, 23 Oct 2009 06:07:17 +0000 Message-ID: <4AE147B9.4020409@nokia.com> Date: Fri, 23 Oct 2009 09:05:45 +0300 From: Mika Korhonen MIME-Version: 1.0 To: ext Amit Kumar Sharma Subject: Re: [PATCH v5 2/3] MTD: OneNAND: multiblock erase support References: <1255341165-1972-1-git-send-email-ext-mika.2.korhonen@nokia.com> <1255341165-1972-2-git-send-email-ext-mika.2.korhonen@nokia.com> <1255341165-1972-3-git-send-email-ext-mika.2.korhonen@nokia.com> <4ADDB69F.7060606@nokia.com> <1256272454.29885.198.camel@localhost> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "amul.saha@samsung.com" , "Bityutskiy Artem \(Nokia-D/Helsinki\)" , "kyungmin.park@samsung.com" , "linux-mtd@lists.infradead.org" , "Hunter Adrian \(Nokia-D/Helsinki\)" List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , ext Amit Kumar Sharma wrote: > Hi Mika, > > Do you have any use case for using multiblock erase. > > > Thanks > Amit > Yes, e.g. during development/loop testing we need to flash a new system on an MTD partition. The (UBIFS) system could be tiny but the partition large in which case the erase time becomes even more significant. Even in more usual cases of reflashing a bigger system this gives ca. 5 % speed improvement. Mika