From patchwork Sun Jun 5 19:32:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 9155903 X-Patchwork-Delegate: snitzer@redhat.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3A23560759 for ; Sun, 5 Jun 2016 19:37:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2A2CB2793B for ; Sun, 5 Jun 2016 19:37:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1F21228210; Sun, 5 Jun 2016 19:37:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from mx5-phx2.redhat.com (mx5-phx2.redhat.com [209.132.183.37]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B7FD32793B for ; Sun, 5 Jun 2016 19:37:00 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by mx5-phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u55JXdX2037170; Sun, 5 Jun 2016 15:33:40 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id u55JXc25029381 for ; Sun, 5 Jun 2016 15:33:38 -0400 Received: from rh2.redhat.com (vpn-57-172.rdu2.redhat.com [10.10.57.172]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u55JWR9a003130; Sun, 5 Jun 2016 15:33:36 -0400 From: mchristi@redhat.com To: 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 Date: Sun, 5 Jun 2016 14:32:09 -0500 Message-Id: <1465155145-10812-30-git-send-email-mchristi@redhat.com> In-Reply-To: <1465155145-10812-1-git-send-email-mchristi@redhat.com> References: <1465155145-10812-1-git-send-email-mchristi@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-loop: dm-devel@redhat.com Cc: Mike Christie Subject: [dm-devel] [PATCH 29/45] xen: use bio op accessors X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Virus-Scanned: ClamAV using ClamSMTP From: Mike Christie Separate the op from the rq_flag_bits and have xen set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- drivers/block/xen-blkback/blkback.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 79fe493..4a80ee7 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -501,7 +501,7 @@ static int xen_vbd_translate(struct phys_req *req, struct xen_blkif *blkif, struct xen_vbd *vbd = &blkif->vbd; int rc = -EACCES; - if ((operation != READ) && vbd->readonly) + if ((operation != REQ_OP_READ) && vbd->readonly) goto out; if (likely(req->nr_sects)) { @@ -1014,7 +1014,7 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring, preq.sector_number = req->u.discard.sector_number; preq.nr_sects = req->u.discard.nr_sectors; - err = xen_vbd_translate(&preq, blkif, WRITE); + err = xen_vbd_translate(&preq, blkif, REQ_OP_WRITE); if (err) { pr_warn("access denied: DISCARD [%llu->%llu] on dev=%04x\n", preq.sector_number, @@ -1229,6 +1229,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, struct bio **biolist = pending_req->biolist; int i, nbio = 0; int operation; + int operation_flags = 0; struct blk_plug plug; bool drain = false; struct grant_page **pages = pending_req->segments; @@ -1247,17 +1248,19 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, switch (req_operation) { case BLKIF_OP_READ: ring->st_rd_req++; - operation = READ; + operation = REQ_OP_READ; break; case BLKIF_OP_WRITE: ring->st_wr_req++; - operation = WRITE_ODIRECT; + operation = REQ_OP_WRITE; + operation_flags = WRITE_ODIRECT; break; case BLKIF_OP_WRITE_BARRIER: drain = true; case BLKIF_OP_FLUSH_DISKCACHE: ring->st_f_req++; - operation = WRITE_FLUSH; + operation = REQ_OP_WRITE; + operation_flags = WRITE_FLUSH; break; default: operation = 0; /* make gcc happy */ @@ -1269,7 +1272,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, nseg = req->operation == BLKIF_OP_INDIRECT ? req->u.indirect.nr_segments : req->u.rw.nr_segments; - if (unlikely(nseg == 0 && operation != WRITE_FLUSH) || + if (unlikely(nseg == 0 && operation_flags != WRITE_FLUSH) || unlikely((req->operation != BLKIF_OP_INDIRECT) && (nseg > BLKIF_MAX_SEGMENTS_PER_REQUEST)) || unlikely((req->operation == BLKIF_OP_INDIRECT) && @@ -1310,7 +1313,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, if (xen_vbd_translate(&preq, ring->blkif, operation) != 0) { pr_debug("access denied: %s of [%llu,%llu] on dev=%04x\n", - operation == READ ? "read" : "write", + operation == REQ_OP_READ ? "read" : "write", preq.sector_number, preq.sector_number + preq.nr_sects, ring->blkif->vbd.pdevice); @@ -1369,7 +1372,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, bio->bi_private = pending_req; bio->bi_end_io = end_block_io_op; bio->bi_iter.bi_sector = preq.sector_number; - bio->bi_rw = operation; + bio_set_op_attrs(bio, operation, operation_flags); } preq.sector_number += seg[i].nsec; @@ -1377,7 +1380,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, /* This will be hit if the operation was a flush or discard. */ if (!bio) { - BUG_ON(operation != WRITE_FLUSH); + BUG_ON(operation_flags != WRITE_FLUSH); bio = bio_alloc(GFP_KERNEL, 0); if (unlikely(bio == NULL)) @@ -1387,7 +1390,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, bio->bi_bdev = preq.bdev; bio->bi_private = pending_req; bio->bi_end_io = end_block_io_op; - bio->bi_rw = operation; + bio_set_op_attrs(bio, operation, operation_flags); } atomic_set(&pending_req->pendcnt, nbio); @@ -1399,9 +1402,9 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, /* Let the I/Os go.. */ blk_finish_plug(&plug); - if (operation == READ) + if (operation == REQ_OP_READ) ring->st_rd_sect += preq.nr_sects; - else if (operation & WRITE) + else if (operation == REQ_OP_WRITE) ring->st_wr_sect += preq.nr_sects; return 0;