From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755791Ab0IAPa7 (ORCPT ); Wed, 1 Sep 2010 11:30:59 -0400 Received: from verein.lst.de ([213.95.11.210]:55225 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754617Ab0IAPa5 (ORCPT ); Wed, 1 Sep 2010 11:30:57 -0400 Date: Wed, 1 Sep 2010 17:30:27 +0200 From: Christoph Hellwig To: Tejun Heo Cc: jaxboe@fusionio.com, k-ueda@ct.jp.nec.com, snitzer@redhat.com, j-nomura@ce.jp.nec.com, jamie@shareable.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-raid@vger.kernel.org, hch@lst.de Subject: Re: [PATCH 1/5] block: make __blk_rq_prep_clone() copy most command flags Message-ID: <20100901153027.GA2744@lst.de> References: <1283162296-13650-1-git-send-email-tj@kernel.org> <1283162296-13650-2-git-send-email-tj@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1283162296-13650-2-git-send-email-tj@kernel.org> User-Agent: Mutt/1.3.28i X-Spam-Score: 0 () Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 30, 2010 at 11:58:12AM +0200, Tejun Heo wrote: > Currently __blk_rq_prep_clone() copies only REQ_WRITE and REQ_DISCARD. > There's no reason to omit other command flags and REQ_FUA needs to be > copied to implement FUA support in request-based dm. > > REQ_COMMON_MASK which specifies flags to be copied from bio to request > already identifies all the command flags. Define REQ_CLONE_MASK to be > the same as REQ_COMMON_MASK for clarity and make __blk_rq_prep_clone() > copy all flags in the mask. > > Signed-off-by: Tejun Heo Looks good, Reviewed-by: Christoph Hellwig