From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCHSET] block,scsi,libata: implement alt_size Date: Thu, 30 Apr 2009 10:13:23 +0900 Message-ID: <49F8FB33.8020803@kernel.org> References: <1233456951-992-1-git-send-email-tj@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:51167 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750898AbZD3BOq (ORCPT ); Wed, 29 Apr 2009 21:14:46 -0400 In-Reply-To: <1233456951-992-1-git-send-email-tj@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: jeff@garzik.org, linux-ide@vger.kernel.org, jens.axboe@oracle.com, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, James.Bottomley@HansenPartnership.com, Mauelshagen@RedHat.c Tejun Heo wrote: > Hello, > > This patchset implements alt_size, which is a size hint to the users > of a block device. It's primarily to communicate the BIOS (HPA) size > on ATA devices to userland, so that dmraid can consider it when trying > to figure out BIOS raid layout. This is critical as dmraid can be > tricked into assemblying the wrong raid when fed with the unlocked > size and if the disk content is right (or, rather, wrong) and good > number of distros are shipping with ignore_hpa=1 as default. PING. -- tejun