From patchwork Thu Oct 11 07:09:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 10636181 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0309269B1 for ; Thu, 11 Oct 2018 07:10:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D6A022AE79 for ; Thu, 11 Oct 2018 07:10:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CAF6B2AEDA; Thu, 11 Oct 2018 07:10:06 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7B48E2AED2 for ; Thu, 11 Oct 2018 07:10:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727195AbeJKOgB (ORCPT ); Thu, 11 Oct 2018 10:36:01 -0400 Received: from esa1.hgst.iphmx.com ([68.232.141.245]:12787 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726781AbeJKOgB (ORCPT ); Thu, 11 Oct 2018 10:36:01 -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=1539241805; x=1570777805; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=qE5fd/NISE6lDiRO0hckNYX1tvXZArPBQZ9N61xHDYQ=; b=rnZReYaWYl/IR5WAkcfK15Ojbd8JeZzL74mXuLVRUBshK8q8680SzxUI qmlStETEjOCf8Bzvrr0culf8V7K781wgSkIB8FqBGo3XnxCQXaBwgBJvo mojeE0F1fy06zhAqXmjDcPn+DduKQKDTuHD1RfxzOV+zTx91nNnn4PWkQ DjzDFY60Xque0zLyeLz0zYfdUslpWEj+kCWzzrDfFZvImT44IaoLZGQTb 0k8PCpHWRWkjzp6zTbc2CCPgZTY9K1mMNbbkBkLnTnouKO7mA8IpWdnxl gdWP4TJmYT3i64O0q0TkT3eUO/7ksrx647dC022SiiF20QVTv/JvpUf67 g==; X-IronPort-AV: E=Sophos;i="5.54,367,1534780800"; d="scan'208";a="196047573" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 11 Oct 2018 15:10:05 +0800 Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP; 10 Oct 2018 23:55:03 -0700 Received: from washi.fujisawa.hgst.com ([10.149.53.254]) by uls-op-cesaip02.wdc.com with ESMTP; 11 Oct 2018 00:10:04 -0700 From: Damien Le Moal To: linux-block@vger.kernel.org, Jens Axboe , linux-scsi@vger.kernel.org, "Martin K . Petersen" , dm-devel@redhat.com, Mike Snitzer Cc: Christoph Hellwig , Matias Bjorling Subject: [PATCH v2 07/11] block: Introduce BLKGETNRZONES ioctl Date: Thu, 11 Oct 2018 16:09:48 +0900 Message-Id: <20181011070952.13248-8-damien.lemoal@wdc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181011070952.13248-1-damien.lemoal@wdc.com> References: <20181011070952.13248-1-damien.lemoal@wdc.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Get a zoned block device total number of zones. The device can be a partition of the whole device. The number of zones is always 0 for regular block devices. Signed-off-by: Damien Le Moal --- block/ioctl.c | 2 ++ include/uapi/linux/blkzoned.h | 1 + 2 files changed, 3 insertions(+) diff --git a/block/ioctl.c b/block/ioctl.c index f6d2c6f1f050..4825c78a6baa 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -534,6 +534,8 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg); case BLKGETZONESZ: return put_uint(arg, bdev_zone_sectors(bdev)); + case BLKGETNRZONES: + return put_uint(arg, blkdev_nr_zones(bdev)); case HDIO_GETGEO: return blkdev_getgeo(bdev, argp); case BLKRAGET: diff --git a/include/uapi/linux/blkzoned.h b/include/uapi/linux/blkzoned.h index 281ac605f752..8f08ff9bdea0 100644 --- a/include/uapi/linux/blkzoned.h +++ b/include/uapi/linux/blkzoned.h @@ -142,5 +142,6 @@ struct blk_zone_range { #define BLKREPORTZONE _IOWR(0x12, 130, struct blk_zone_report) #define BLKRESETZONE _IOW(0x12, 131, struct blk_zone_range) #define BLKGETZONESZ _IOW(0x12, 132, __u32) +#define BLKGETNRZONES _IOW(0x12, 133, __u32) #endif /* _UAPI_BLKZONED_H */