From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:46001 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751017AbcFFGPw (ORCPT ); Mon, 6 Jun 2016 02:15:52 -0400 Subject: Re: [PATCH 06/45] dm: use op_is_write instead of checking for REQ_WRITE To: mchristi@redhat.com, linux-f2fs-devel@lists.sourceforge.net, linux-ext4@vger.kernel.org, konrad.wilk@oracle.com, drbd-dev@lists.linbit.com, philipp.reisner@linbit.com, lars.ellenberg@linbit.com, linux-raid@vger.kernel.org, dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mtd@lists.infradead.org, target-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, osd-dev@open-osd.org, xfs@oss.sgi.com, ocfs2-devel@oss.oracle.com References: <1465155145-10812-1-git-send-email-mchristi@redhat.com> <1465155145-10812-7-git-send-email-mchristi@redhat.com> From: Hannes Reinecke Message-ID: <57551515.8060205@suse.de> Date: Mon, 6 Jun 2016 08:15:49 +0200 MIME-Version: 1.0 In-Reply-To: <1465155145-10812-7-git-send-email-mchristi@redhat.com> Content-Type: text/plain; charset=windows-1252 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 06/05/2016 09:31 PM, mchristi@redhat.com wrote: > From: Mike Christie > > We currently set REQ_WRITE/WRITE for all non READ IOs > like discard, flush, writesame, etc. In the next patches where we > no longer set up the op as a bitmap, we will not be able to > detect a operation direction like writesame by testing if REQ_WRITE is > set. > > This has dm use the op_is_write helper which will do the right > thing. > > Signed-off-by: Mike Christie > --- (Could probably be folded into the previous patch) Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)