From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id BFF777CA0 for ; Mon, 6 Jun 2016 01:51:05 -0500 (CDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by relay1.corp.sgi.com (Postfix) with ESMTP id 824FF8F8040 for ; Sun, 5 Jun 2016 23:51:05 -0700 (PDT) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by cuda.sgi.com with ESMTP id mHmnppTtNnNC4DTW (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 05 Jun 2016 23:51:03 -0700 (PDT) Subject: Re: [PATCH 40/45] block: move bio io prio to a new field References: <1465155145-10812-1-git-send-email-mchristi@redhat.com> <1465155145-10812-41-git-send-email-mchristi@redhat.com> From: Hannes Reinecke Message-ID: <57551D55.8070200@suse.de> Date: Mon, 6 Jun 2016 08:51:01 +0200 MIME-Version: 1.0 In-Reply-To: <1465155145-10812-41-git-send-email-mchristi@redhat.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com 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 On 06/05/2016 09:32 PM, mchristi@redhat.com wrote: > From: Mike Christie > = > In the next patch, we move drop the compat code and make > the op a separate value that is hidden in bi_rw. To give > the op and rq bits flags room to grow this moves prio to > its own field. > = > Signed-off-by: Mike Christie > --- > include/linux/bio.h | 14 ++------------ > include/linux/blk_types.h | 5 ++--- > 2 files changed, 4 insertions(+), 15 deletions(-) > = > diff --git a/include/linux/bio.h b/include/linux/bio.h > index 4568647..35108c2 100644 > --- a/include/linux/bio.h > +++ b/include/linux/bio.h > @@ -47,18 +47,8 @@ > #define bio_op(bio) (op_from_rq_bits((bio)->bi_rw)) > #define bio_set_op_attrs(bio, op, flags) ((bio)->bi_rw |=3D (op | flags)) > = > -/* > - * upper 16 bits of bi_rw define the io priority of this bio > - */ > -#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS) > -#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT) > -#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio)) > - > -#define bio_set_prio(bio, prio) do { \ > - WARN_ON(prio >=3D (1 << IOPRIO_BITS)); \ > - (bio)->bi_rw &=3D ((1UL << BIO_PRIO_SHIFT) - 1); \ > - (bio)->bi_rw |=3D ((unsigned long) (prio) << BIO_PRIO_SHIFT); \ > -} while (0) > +#define bio_prio(bio) (bio)->bi_ioprio > +#define bio_set_prio(bio, prio) ((bio)->bi_ioprio =3D prio) > = > /* > * various member access, note that bio_data should of course not be used > diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h > index 6e60baa..2738413 100644 > --- a/include/linux/blk_types.h > +++ b/include/linux/blk_types.h > @@ -48,9 +48,8 @@ struct bio { > struct block_device *bi_bdev; > unsigned int bi_flags; /* status, command, etc */ > int bi_error; > - unsigned long bi_rw; /* bottom bits READ/WRITE, > - * top bits priority > - */ > + unsigned long bi_rw; /* READ/WRITE */ > + unsigned short bi_ioprio; > = > struct bvec_iter bi_iter; > = > = 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 N=FCrnberg GF: F. Imend=F6rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG N=FCrnberg) _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs