From patchwork Mon Apr 27 11:31:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 11511963 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4613715AB for ; Mon, 27 Apr 2020 11:32:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F2DD206CD for ; Mon, 27 Apr 2020 11:32:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="IIpAcMEI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727010AbgD0Lc0 (ORCPT ); Mon, 27 Apr 2020 07:32:26 -0400 Received: from esa5.hgst.iphmx.com ([216.71.153.144]:54662 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726899AbgD0LcU (ORCPT ); Mon, 27 Apr 2020 07:32:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1587987140; x=1619523140; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EptpuszxKds2VZq8D512Jp2spjpDwJgzg8AZNAyDqGo=; b=IIpAcMEIIueytAwThmdTA0BXw9+KC9SP+BKVCYesyNlWwEOZswGTZrlr VVCDw9vdf77glveaGOGKRuDSQ5jxOJE7n6H06tXmZEveP2FvAVpKBWcQO k3n9Tw8Bwj3MkGR9vroZBG/xs2rYNIARP8JPSquqywmKRH4MoVz2DBkvI RLcCj99Iq0I3AJnrATsuxN3iWUWHqy0UdAoK54ukklRIQ4qWTwDw++B3a 60VP1sNAvy1p6QIcwPOTp7gZOns1MTGS6M++JQrvvbebSy/Gvue+7mJL8 GAeznCg/kYGhwVwo4DYvwykouq03RLHl3XGtEZhScIsTZjkdyaj4f9JzP A==; IronPort-SDR: R9grZ0oEVQO1RmjNn36AC9ZsMxZCKkzBOVdiFDy2VAbA8QpeTVmev/8N4ZGa8F3armNqc/7ajb eYD1SSEhnkUWhJ2fqvYM7FdiUMre2Lu8E43TuTsqDFgafG0b3DLzMvHLIDeOuMMSCj+OuWhphM jmF3O6GssH68hrYsv2jQrwz5f3eQRs4C9chapMZCIYIwQM7xATfScf2Kl3Fjc+eaHDqtCA+A0e mAzjDftCcZ3JBXE96EyJEwVbYO9FVIdwwNfmiAUIJEK66hokvCcO8f4foBA+T4BZ2x4JqBCFFA uAk= X-IronPort-AV: E=Sophos;i="5.73,323,1583164800"; d="scan'208";a="136552035" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 27 Apr 2020 19:32:20 +0800 IronPort-SDR: QZ2NIkzrdR/Z1q2cLylf6ZqDcWQem4pon1iCbqybiy49vcQlBXST3idxm4XC5jb4b+MufHw7qZ GvFwdgyS4sgrW3PtSmKXlpK2dXZ9uiWoY= Received: from uls-op-cesaip01.wdc.com ([10.248.3.36]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 04:23:01 -0700 IronPort-SDR: vfUVC7uHLoWZ3TDoSVDVw28e98w6YGN+jFV0a7HM9ARWgY14/J3BXOLuUZBrJCC94+nmENXB4W CrFkJ5DiDU0Q== WDCIronportException: Internal Received: from unknown (HELO redsun60.ssa.fujisawa.hgst.com) ([10.149.66.36]) by uls-op-cesaip01.wdc.com with ESMTP; 27 Apr 2020 04:32:18 -0700 From: Johannes Thumshirn To: Jens Axboe Cc: Christoph Hellwig , linux-block , Damien Le Moal , Keith Busch , "linux-scsi @ vger . kernel . org" , "Martin K . Petersen" , "linux-fsdevel @ vger . kernel . org" , Damien Le Moal , Christoph Hellwig , Johannes Thumshirn Subject: [PATCH v8 09/11] null_blk: Support REQ_OP_ZONE_APPEND Date: Mon, 27 Apr 2020 20:31:51 +0900 Message-Id: <20200427113153.31246-10-johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200427113153.31246-1-johannes.thumshirn@wdc.com> References: <20200427113153.31246-1-johannes.thumshirn@wdc.com> MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Damien Le Moal Support REQ_OP_ZONE_APPEND requests for null_blk devices with zoned mode enabled. Use the internally tracked zone write pointer position as the actual write position and return it using the command request __sector field in the case of an mq device and using the command BIO sector in the case of a BIO device. Reviewed-by: Christoph Hellwig Signed-off-by: Damien Le Moal Signed-off-by: Johannes Thumshirn --- drivers/block/null_blk_zoned.c | 39 +++++++++++++++++++++++++++------- 1 file changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c index 46641df2e58e..5c70e0c7e862 100644 --- a/drivers/block/null_blk_zoned.c +++ b/drivers/block/null_blk_zoned.c @@ -70,13 +70,22 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q) int null_register_zoned_dev(struct nullb *nullb) { + struct nullb_device *dev = nullb->dev; struct request_queue *q = nullb->q; - if (queue_is_mq(q)) - return blk_revalidate_disk_zones(nullb->disk, NULL); + if (queue_is_mq(q)) { + int ret = blk_revalidate_disk_zones(nullb->disk, NULL); + + if (ret) + return ret; + } else { + blk_queue_chunk_sectors(q, dev->zone_size_sects); + q->nr_zones = blkdev_nr_zones(nullb->disk); + } - blk_queue_chunk_sectors(q, nullb->dev->zone_size_sects); - q->nr_zones = blkdev_nr_zones(nullb->disk); + blk_queue_max_zone_append_sectors(q, + min_t(sector_t, q->limits.max_hw_sectors, + dev->zone_size_sects)); return 0; } @@ -138,7 +147,7 @@ size_t null_zone_valid_read_len(struct nullb *nullb, } static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector, - unsigned int nr_sectors) + unsigned int nr_sectors, bool append) { struct nullb_device *dev = cmd->nq->dev; unsigned int zno = null_zone_no(dev, sector); @@ -158,9 +167,21 @@ static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector, case BLK_ZONE_COND_IMP_OPEN: case BLK_ZONE_COND_EXP_OPEN: case BLK_ZONE_COND_CLOSED: - /* Writes must be at the write pointer position */ - if (sector != zone->wp) + /* + * Regular writes must be at the write pointer position. + * Zone append writes are automatically issued at the write + * pointer and the position returned using the request or BIO + * sector. + */ + if (append) { + sector = zone->wp; + if (cmd->bio) + cmd->bio->bi_iter.bi_sector = sector; + else + cmd->rq->__sector = sector; + } else if (sector != zone->wp) { return BLK_STS_IOERR; + } if (zone->cond != BLK_ZONE_COND_EXP_OPEN) zone->cond = BLK_ZONE_COND_IMP_OPEN; @@ -242,7 +263,9 @@ blk_status_t null_process_zoned_cmd(struct nullb_cmd *cmd, enum req_opf op, { switch (op) { case REQ_OP_WRITE: - return null_zone_write(cmd, sector, nr_sectors); + return null_zone_write(cmd, sector, nr_sectors, false); + case REQ_OP_ZONE_APPEND: + return null_zone_write(cmd, sector, nr_sectors, true); case REQ_OP_ZONE_RESET: case REQ_OP_ZONE_RESET_ALL: case REQ_OP_ZONE_OPEN: