From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25C27C43219 for ; Mon, 7 Feb 2022 14:54:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358185AbiBGOx1 (ORCPT ); Mon, 7 Feb 2022 09:53:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1392413AbiBGOab (ORCPT ); Mon, 7 Feb 2022 09:30:31 -0500 Received: from mailout1.samsung.com (mailout1.samsung.com [203.254.224.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5DC55C0401CA for ; Mon, 7 Feb 2022 06:30:28 -0800 (PST) Received: from epcas5p2.samsung.com (unknown [182.195.41.40]) by mailout1.samsung.com (KnoxPortal) with ESMTP id 20220207142300epoutp012d92930c7e5906ca204ae5985e28c156~RhwHIfRgx3108231082epoutp01F for ; Mon, 7 Feb 2022 14:23:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.samsung.com 20220207142300epoutp012d92930c7e5906ca204ae5985e28c156~RhwHIfRgx3108231082epoutp01F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1644243780; bh=51gb+KAkLLOCceSRSpV3/Ck//gOGhaJ89fv7rx6B14I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uinqM7iymHOzanQRuHFR8/QIXHADtnzXUyQ3wc4cu1GmRMLibfLESFSr/O7B8jdpk JDY4Kj4O6YWaNCVzToCCx0umj+ew8m7j2NItZHWg5FZCh84aRLjtPL5lrlWbuPFVbg feuT5V/NzysLf7LbUCvSD9CJnkPrV4AvGfMnHxEw= Received: from epsnrtp1.localdomain (unknown [182.195.42.162]) by epcas5p4.samsung.com (KnoxPortal) with ESMTP id 20220207142259epcas5p4a54c85eb6a5b263a7605f6232654a6db~RhwFw67Mf1944419444epcas5p4S; Mon, 7 Feb 2022 14:22:59 +0000 (GMT) Received: from epsmges5p2new.samsung.com (unknown [182.195.38.181]) by epsnrtp1.localdomain (Postfix) with ESMTP id 4JspJX4Mknz4x9Pr; Mon, 7 Feb 2022 14:22:52 +0000 (GMT) Received: from epcas5p3.samsung.com ( [182.195.41.41]) by epsmges5p2new.samsung.com (Symantec Messaging Gateway) with SMTP id F0.2E.46822.F8A21026; Mon, 7 Feb 2022 23:20:00 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPA id 20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577~Rhs_OEOEH3248332483epcas5p2V; Mon, 7 Feb 2022 14:19:24 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220207141924epsmtrp2a557190332f6fece38e0a61005523cd6~Rhs_M6Kdm0696106961epsmtrp2T; Mon, 7 Feb 2022 14:19:24 +0000 (GMT) X-AuditID: b6c32a4a-dfbff7000000b6e6-49-62012a8fdc8f Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id B6.43.08738.C6A21026; Mon, 7 Feb 2022 23:19:24 +0900 (KST) Received: from test-zns.sa.corp.samsungelectronics.net (unknown [107.110.206.5]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220207141920epsmtip1a7ccbdb905ddb0402a8d97a28a9ac832~Rhs6Z13Yd0564005640epsmtip1J; Mon, 7 Feb 2022 14:19:20 +0000 (GMT) From: Nitesh Shetty To: mpatocka@redhat.com Cc: javier@javigon.com, chaitanyak@nvidia.com, linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, dm-devel@redhat.com, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, axboe@kernel.dk, msnitzer@redhat.com, bvanassche@acm.org, martin.petersen@oracle.com, roland@purestorage.com, hare@suse.de, kbusch@kernel.org, hch@lst.de, Frederick.Knight@netapp.com, zach.brown@ni.com, osandov@fb.com, lsf-pc@lists.linux-foundation.org, djwong@kernel.org, josef@toxicpanda.com, clm@fb.com, dsterba@suse.com, tytso@mit.edu, jack@suse.com, joshi.k@samsung.com, arnav.dawn@samsung.com, nj.shetty@samsung.com Subject: [PATCH v2 04/10] block: Introduce a new ioctl for copy Date: Mon, 7 Feb 2022 19:43:42 +0530 Message-Id: <20220207141348.4235-5-nj.shetty@samsung.com> X-Mailer: git-send-email 2.30.0-rc0 In-Reply-To: <20220207141348.4235-1-nj.shetty@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA02TfyycdxzH832eu+ceVvLs6HzJbLdTW1Dctce+p1Ua0jypbZFuaZZmYQ/3 DOHO5Y61XcToaVe/lbTT6+Jom8mYVv04WkeLoYrN5rfVVBAJSnGM0dpxZ+t/r8+P9/f9/Xy+ +ZI4v5LnRMYoEliVgokTEtYcfaubm2eeO4gQ/VaMI8PICheVj+US6NqLDRwtNk9yUX5uIQ/1 TdmixoUbXNS7noqhyaptDBlu5mPop/I2DM2U3gIovasXQ1sTYtS2/ZxA+S2DADWOeiBDYycH 6X6c5qHMoXoCNc014qi04xWGrlwewNCv2i0C6Td1OGr9a4CDyrcQupi1wUOzD8MCnem+/hD6 imaBR2uKn3Lovp5EuqosnaCrb39LFwyXArphJIWgL3S34XThspGgh7rrMDpbs0DQS9OjHFo/ kc2jF5sGCDqnpgyE2p+JPRrNMjJWJWAVkfGyGEWUvzDk0/CgcB9fkdhTLEUfCgUKRs76C4M/ CvU8ERNnWpJQ8DUTl2hKhTJqtdD72FFVfGICK4iOVyf4C1mlLE4pUXqpGbk6URHlpWAT/MQi 0SEfU+OXsdELFQZM2Q3P9egy8RSgs88AViSkJLAqPQdkAGuSTzUAOLs+ipuDZQD1m608c7AC 4PpENb4nqU0b55oLDwC8M5qxW+BTFzGoeR6UAUiSoDxg1za5k7anHOBWr37XAqdWOHBwSMvb KdhRAbD9XhmxwxzKFWYtp3F22IaSQuMjo8XMBZZMNHN32Iryg2tb1yw9b8LO61O7jFPvQk3t jd1rQ2rUCv653Y2ZxcGw8N4zwsx2cLajhmdmJ7iy0EiYBZmm0brHMXNQCKAmT2NRBMDfDS+x nXFwyg3efeBtTjvDq0/uYGZnW5i9OWUxs4H1RXvsAn++W2w5xhEO/p1qYRo2ZbVaFtwP4NPF TiIPCLSvTaR9bSLt/9bFAC8DjqxSLY9i1T7KQwr27H/vHBkvrwK7X8f9ZD2YePbCqwVgJGgB kMSF9jZvZ24zfBsZc/4bVhUfrkqMY9UtwMe08iu40/7IeNPfUySEiyVSkcTX11ciPewrFjrY dEVVMnwqiklgY1lWyar2dBhp5ZSCBa0GLBtfiub/qKi/XXJcah/UEnSgn7t0wufx6bB9/5Ah q5cuf1ISNt+cROjOiAUbh5tfXU8SlK2G5Z41pEkXI3oeOVp3HRn0Sr7k8dbBC4HvyDqvSj1n aG5DlleMMWmQM+j91VpiRpsNeswtIEvr/KqHC0Sz7Xz52sf3i6zn3tinDXxSwJ39bv6HBavA +/JfrPRDQ8UPI0bGIiNcbWOcrU9NcmrOL7rzXdMi3hsZrw8/UtkxbLeUsTpTkup1cnmuYppP 1gVLKr84/f7wQT+P/TJjrZ3LpO25me9DtBu1x52Sw491kDm6z4qMdiF0bnKoR9rNsZQPPl+/ 5eAzckrWjjMzB4QcdTQjdsdVauZfcJk/YcMEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrKIsWRmVeSWpSXmKPExsWy7bCSnG6OFmOSwZo1BhZ7bn5mtVh9t5/N YtqHn8wW7w8+ZrWY1D+D3eLyEz6Lve9ms1pc+NHIZPF4038miz2LJjFZrFx9lMni+fLFjBad py8wWfx5aGhx9P9bNotJh64xWuy9pW2xZ+9JFov5y56yW3Rf38Fmse/1XmaL5cf/MVlM7LjK ZHFu1h82i22/5zNbHL53lcVi9R8Li9aen+wWr/bHOch6XL7i7TGx+R27R/OCOywel8+Wemxa 1cnmsXlJvcfkG8sZPXbfbGDzaDpzlNljxqcvbB7Xz2xn8uhtfsfm8fHpLRaPbQ972T3e77vK 5tG3ZRVjgEgUl01Kak5mWWqRvl0CV8a7tXuYCs5IVJyd383cwDhfpIuRk0NCwERia8t91i5G Lg4hgR2MEs/bu9khEpISy/4eYYawhSVW/nsOFhcSaGaSOHVSp4uRg4NNQFvi9H8OkLCIgLjE nwvbGEHmMAtMZ5VoOHWZCSQhLGAvcWzjKjYQm0VAVaLnUwsLiM0rYCnx5cAXqPnKEgsfHmQF sTkFrCS+/ZnGAnFQA6NEw7kVrBANghInZz4Ba2YWkJdo3jqbeQKjwCwkqVlIUgsYmVYxSqYW FOem5xYbFhjlpZbrFSfmFpfmpesl5+duYgSnBC2tHYx7Vn3QO8TIxMF4iFGCg1lJhFem+3+i EG9KYmVValF+fFFpTmrxIUZpDhYlcd4LXSfjhQTSE0tSs1NTC1KLYLJMHJxSDUxCO59dctb8 f/N7q7Bdk+m3NVvTdu+o93Sa8e3ceYUu/6znW9K2MTenP7EVEPBfbzH7gPvNL3vLpPQ+aTCb PHE5F6kVLix98I3T2YpdZ2ovyDw+GVRXN8VfyrMiZP/sLuvS7OLEAwuTDF90rfczNlv+S2XZ jSvms3NcTNg8xQU0TjCvXn/b8Whs19P5q1/k8Dpt+K+0ufhPp3+/Z82j5iLZHQ9/GhyuPmK9 MN7VMdWk4mNPZNTpYIe+U5kuggc+WiQ0P/xRLWdy+eyJSAenM067SnmjNTf5hT1lEtpTOPnq JHfRWu/rApdVrjrx9Ew66+W8+sT6tWfvFr0v/z65YE1K2empryuvBlUYK1nanFJiKc5INNRi LipOBABRSx0eeAMAAA== X-CMS-MailID: 20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577 References: <20220207141348.4235-1-nj.shetty@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add new BLKCOPY ioctl that offloads copying of one or more sources ranges to one or more destination in a device. COPY ioctl accepts a 'copy_range' structure that contains no of range, a reserved field , followed by an array of ranges. Each source range is represented by 'range_entry' that contains source start offset, destination start offset and length of source ranges (in bytes) Signed-off-by: Nitesh Shetty Signed-off-by: Arnav Dawn --- block/ioctl.c | 37 +++++++++++++++++++++++++++++++++++++ include/uapi/linux/fs.h | 9 +++++++++ 2 files changed, 46 insertions(+) diff --git a/block/ioctl.c b/block/ioctl.c index 4a86340133e4..d77f6143287e 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -124,6 +124,41 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode, return err; } +static int blk_ioctl_copy(struct block_device *bdev, fmode_t mode, + unsigned long arg) +{ + struct copy_range crange, *ranges; + size_t payload_size = 0; + int ret; + + if (!(mode & FMODE_WRITE)) + return -EBADF; + + if (copy_from_user(&crange, (void __user *)arg, sizeof(crange))) + return -EFAULT; + + if (unlikely(!crange.nr_range || crange.reserved || crange.nr_range >= MAX_COPY_NR_RANGE)) + return -EINVAL; + + payload_size = (crange.nr_range * sizeof(struct range_entry)) + sizeof(crange); + + ranges = kmalloc(payload_size, GFP_KERNEL); + if (!ranges) + return -ENOMEM; + + if (copy_from_user(ranges, (void __user *)arg, payload_size)) { + ret = -EFAULT; + goto out; + } + + ret = blkdev_issue_copy(bdev, ranges->nr_range, ranges->range_list, bdev, GFP_KERNEL, 0); + if (copy_to_user((void __user *)arg, ranges, payload_size)) + ret = -EFAULT; +out: + kfree(ranges); + return ret; +} + static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode, unsigned long arg) { @@ -455,6 +490,8 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode, case BLKSECDISCARD: return blk_ioctl_discard(bdev, mode, arg, BLKDEV_DISCARD_SECURE); + case BLKCOPY: + return blk_ioctl_copy(bdev, mode, arg); case BLKZEROOUT: return blk_ioctl_zeroout(bdev, mode, arg); case BLKGETDISKSEQ: diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 55bca8f6e8ed..190911ea4311 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -78,6 +78,14 @@ struct range_entry { __u64 comp_len; }; +struct copy_range { + __u64 nr_range; + __u64 reserved; + + /* Range_list always must be at the end */ + struct range_entry range_list[]; +}; + /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */ #define FILE_DEDUPE_RANGE_SAME 0 #define FILE_DEDUPE_RANGE_DIFFERS 1 @@ -199,6 +207,7 @@ struct fsxattr { #define BLKROTATIONAL _IO(0x12,126) #define BLKZEROOUT _IO(0x12,127) #define BLKGETDISKSEQ _IOR(0x12,128,__u64) +#define BLKCOPY _IOWR(0x12, 129, struct copy_range) /* * A jump here: 130-136 are reserved for zoned block devices * (see uapi/linux/blkzoned.h) -- 2.30.0-rc0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C73B4C433F5 for ; Tue, 8 Feb 2022 22:33:48 +0000 (UTC) Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-230-kv3S2resMBKF4W_HheWSpw-1; Tue, 08 Feb 2022 17:33:44 -0500 X-MC-Unique: kv3S2resMBKF4W_HheWSpw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EA7EC84B9A8; Tue, 8 Feb 2022 22:33:38 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A9B421037F51; Tue, 8 Feb 2022 22:33:38 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 4AF4B473CF; Tue, 8 Feb 2022 22:33:38 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 217EUYtG012650 for ; Mon, 7 Feb 2022 09:30:34 -0500 Received: by smtp.corp.redhat.com (Postfix) id 8CFC540FF696; Mon, 7 Feb 2022 14:30:34 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast05.extmail.prod.ext.rdu2.redhat.com [10.11.55.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8854040FF690 for ; Mon, 7 Feb 2022 14:30:34 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6EE14803DDA for ; Mon, 7 Feb 2022 14:30:34 +0000 (UTC) Received: from mailout2.samsung.com (mailout2.samsung.com [203.254.224.25]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-215-OFAX2Cf7NDeL7GMw4HgOdQ-1; Mon, 07 Feb 2022 09:30:31 -0500 X-MC-Unique: OFAX2Cf7NDeL7GMw4HgOdQ-1 Received: from epcas5p2.samsung.com (unknown [182.195.41.40]) by mailout2.samsung.com (KnoxPortal) with ESMTP id 20220207142300epoutp0245fbfbae2170d7be70daeb5f0cdea9ff~RhwHHzJdN0687906879epoutp02E for ; Mon, 7 Feb 2022 14:23:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20220207142300epoutp0245fbfbae2170d7be70daeb5f0cdea9ff~RhwHHzJdN0687906879epoutp02E Received: from epsnrtp1.localdomain (unknown [182.195.42.162]) by epcas5p4.samsung.com (KnoxPortal) with ESMTP id 20220207142259epcas5p4a54c85eb6a5b263a7605f6232654a6db~RhwFw67Mf1944419444epcas5p4S; Mon, 7 Feb 2022 14:22:59 +0000 (GMT) Received: from epsmges5p2new.samsung.com (unknown [182.195.38.181]) by epsnrtp1.localdomain (Postfix) with ESMTP id 4JspJX4Mknz4x9Pr; Mon, 7 Feb 2022 14:22:52 +0000 (GMT) Received: from epcas5p3.samsung.com ( [182.195.41.41]) by epsmges5p2new.samsung.com (Symantec Messaging Gateway) with SMTP id F0.2E.46822.F8A21026; Mon, 7 Feb 2022 23:20:00 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPA id 20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577~Rhs_OEOEH3248332483epcas5p2V; Mon, 7 Feb 2022 14:19:24 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220207141924epsmtrp2a557190332f6fece38e0a61005523cd6~Rhs_M6Kdm0696106961epsmtrp2T; Mon, 7 Feb 2022 14:19:24 +0000 (GMT) X-AuditID: b6c32a4a-dfbff7000000b6e6-49-62012a8fdc8f Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id B6.43.08738.C6A21026; Mon, 7 Feb 2022 23:19:24 +0900 (KST) Received: from test-zns.sa.corp.samsungelectronics.net (unknown [107.110.206.5]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220207141920epsmtip1a7ccbdb905ddb0402a8d97a28a9ac832~Rhs6Z13Yd0564005640epsmtip1J; Mon, 7 Feb 2022 14:19:20 +0000 (GMT) From: Nitesh Shetty To: mpatocka@redhat.com Date: Mon, 7 Feb 2022 19:43:42 +0530 Message-Id: <20220207141348.4235-5-nj.shetty@samsung.com> In-Reply-To: <20220207141348.4235-1-nj.shetty@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02TfyycdxzH832eu+ceVvLs6HzJbLdTW1Dctce+p1Ua0jypbZFuaZZmYQ/3 DOHO5Y61XcToaVe/lbTT6+Jom8mYVv04WkeLoYrN5rfVVBAJSnGM0dpxZ+t/r8+P9/f9/Xy+ +ZI4v5LnRMYoEliVgokTEtYcfaubm2eeO4gQ/VaMI8PICheVj+US6NqLDRwtNk9yUX5uIQ/1 TdmixoUbXNS7noqhyaptDBlu5mPop/I2DM2U3gIovasXQ1sTYtS2/ZxA+S2DADWOeiBDYycH 6X6c5qHMoXoCNc014qi04xWGrlwewNCv2i0C6Td1OGr9a4CDyrcQupi1wUOzD8MCnem+/hD6 imaBR2uKn3Lovp5EuqosnaCrb39LFwyXArphJIWgL3S34XThspGgh7rrMDpbs0DQS9OjHFo/ kc2jF5sGCDqnpgyE2p+JPRrNMjJWJWAVkfGyGEWUvzDk0/CgcB9fkdhTLEUfCgUKRs76C4M/ CvU8ERNnWpJQ8DUTl2hKhTJqtdD72FFVfGICK4iOVyf4C1mlLE4pUXqpGbk6URHlpWAT/MQi 0SEfU+OXsdELFQZM2Q3P9egy8RSgs88AViSkJLAqPQdkAGuSTzUAOLs+ipuDZQD1m608c7AC 4PpENb4nqU0b55oLDwC8M5qxW+BTFzGoeR6UAUiSoDxg1za5k7anHOBWr37XAqdWOHBwSMvb KdhRAbD9XhmxwxzKFWYtp3F22IaSQuMjo8XMBZZMNHN32Iryg2tb1yw9b8LO61O7jFPvQk3t jd1rQ2rUCv653Y2ZxcGw8N4zwsx2cLajhmdmJ7iy0EiYBZmm0brHMXNQCKAmT2NRBMDfDS+x nXFwyg3efeBtTjvDq0/uYGZnW5i9OWUxs4H1RXvsAn++W2w5xhEO/p1qYRo2ZbVaFtwP4NPF TiIPCLSvTaR9bSLt/9bFAC8DjqxSLY9i1T7KQwr27H/vHBkvrwK7X8f9ZD2YePbCqwVgJGgB kMSF9jZvZ24zfBsZc/4bVhUfrkqMY9UtwMe08iu40/7IeNPfUySEiyVSkcTX11ciPewrFjrY dEVVMnwqiklgY1lWyar2dBhp5ZSCBa0GLBtfiub/qKi/XXJcah/UEnSgn7t0wufx6bB9/5Ah q5cuf1ISNt+cROjOiAUbh5tfXU8SlK2G5Z41pEkXI3oeOVp3HRn0Sr7k8dbBC4HvyDqvSj1n aG5DlleMMWmQM+j91VpiRpsNeswtIEvr/KqHC0Sz7Xz52sf3i6zn3tinDXxSwJ39bv6HBavA +/JfrPRDQ8UPI0bGIiNcbWOcrU9NcmrOL7rzXdMi3hsZrw8/UtkxbLeUsTpTkup1cnmuYppP 1gVLKr84/f7wQT+P/TJjrZ3LpO25me9DtBu1x52Sw491kDm6z4qMdiF0bnKoR9rNsZQPPl+/ 5eAzckrWjjMzB4QcdTQjdsdVauZfcJk/YcMEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrKIsWRmVeSWpSXmKPExsWy7bCSnG6OFmOSwZo1BhZ7bn5mtVh9t5/N YtqHn8wW7w8+ZrWY1D+D3eLyEz6Lve9ms1pc+NHIZPF4038miz2LJjFZrFx9lMni+fLFjBad py8wWfx5aGhx9P9bNotJh64xWuy9pW2xZ+9JFov5y56yW3Rf38Fmse/1XmaL5cf/MVlM7LjK ZHFu1h82i22/5zNbHL53lcVi9R8Li9aen+wWr/bHOch6XL7i7TGx+R27R/OCOywel8+Wemxa 1cnmsXlJvcfkG8sZPXbfbGDzaDpzlNljxqcvbB7Xz2xn8uhtfsfm8fHpLRaPbQ972T3e77vK 5tG3ZRVjgEgUl01Kak5mWWqRvl0CV8a7tXuYCs5IVJyd383cwDhfpIuRk0NCwERia8t91i5G Lg4hgR2MEs/bu9khEpISy/4eYYawhSVW/nsOFhcSaGaSOHVSp4uRg4NNQFvi9H8OkLCIgLjE nwvbGEHmMAtMZ5VoOHWZCSQhLGAvcWzjKjYQm0VAVaLnUwsLiM0rYCnx5cAXqPnKEgsfHmQF sTkFrCS+/ZnGAnFQA6NEw7kVrBANghInZz4Ba2YWkJdo3jqbeQKjwCwkqVlIUgsYmVYxSqYW FOem5xYbFhjlpZbrFSfmFpfmpesl5+duYgSnBC2tHYx7Vn3QO8TIxMF4iFGCg1lJhFem+3+i EG9KYmVValF+fFFpTmrxIUZpDhYlcd4LXSfjhQTSE0tSs1NTC1KLYLJMHJxSDUxCO59dctb8 f/N7q7Bdk+m3NVvTdu+o93Sa8e3ceYUu/6znW9K2MTenP7EVEPBfbzH7gPvNL3vLpPQ+aTCb PHE5F6kVLix98I3T2YpdZ2ovyDw+GVRXN8VfyrMiZP/sLuvS7OLEAwuTDF90rfczNlv+S2XZ jSvms3NcTNg8xQU0TjCvXn/b8Whs19P5q1/k8Dpt+K+0ufhPp3+/Z82j5iLZHQ9/GhyuPmK9 MN7VMdWk4mNPZNTpYIe+U5kuggc+WiQ0P/xRLWdy+eyJSAenM067SnmjNTf5hT1lEtpTOPnq JHfRWu/rApdVrjrx9Ew66+W8+sT6tWfvFr0v/z65YE1K2empryuvBlUYK1nanFJiKc5INNRi LipOBABRSx0eeAMAAA== X-CMS-MailID: 20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577 References: <20220207141348.4235-1-nj.shetty@samsung.com> X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.84 on 10.11.54.1 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 217EUYtG012650 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Tue, 08 Feb 2022 02:51:51 -0500 Cc: djwong@kernel.org, linux-nvme@lists.infradead.org, clm@fb.com, dm-devel@redhat.com, osandov@fb.com, javier@javigon.com, bvanassche@acm.org, linux-scsi@vger.kernel.org, hch@lst.de, roland@purestorage.com, nj.shetty@samsung.com, zach.brown@ni.com, chaitanyak@nvidia.com, msnitzer@redhat.com, josef@toxicpanda.com, linux-block@vger.kernel.org, dsterba@suse.com, kbusch@kernel.org, Frederick.Knight@netapp.com, axboe@kernel.dk, tytso@mit.edu, joshi.k@samsung.com, martin.petersen@oracle.com, arnav.dawn@samsung.com, jack@suse.com, linux-fsdevel@vger.kernel.org, lsf-pc@lists.linux-foundation.org Subject: [dm-devel] [PATCH v2 04/10] block: Introduce a new ioctl for copy 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: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Add new BLKCOPY ioctl that offloads copying of one or more sources ranges to one or more destination in a device. COPY ioctl accepts a 'copy_range' structure that contains no of range, a reserved field , followed by an array of ranges. Each source range is represented by 'range_entry' that contains source start offset, destination start offset and length of source ranges (in bytes) Signed-off-by: Nitesh Shetty Signed-off-by: Arnav Dawn --- block/ioctl.c | 37 +++++++++++++++++++++++++++++++++++++ include/uapi/linux/fs.h | 9 +++++++++ 2 files changed, 46 insertions(+) diff --git a/block/ioctl.c b/block/ioctl.c index 4a86340133e4..d77f6143287e 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -124,6 +124,41 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode, return err; } +static int blk_ioctl_copy(struct block_device *bdev, fmode_t mode, + unsigned long arg) +{ + struct copy_range crange, *ranges; + size_t payload_size = 0; + int ret; + + if (!(mode & FMODE_WRITE)) + return -EBADF; + + if (copy_from_user(&crange, (void __user *)arg, sizeof(crange))) + return -EFAULT; + + if (unlikely(!crange.nr_range || crange.reserved || crange.nr_range >= MAX_COPY_NR_RANGE)) + return -EINVAL; + + payload_size = (crange.nr_range * sizeof(struct range_entry)) + sizeof(crange); + + ranges = kmalloc(payload_size, GFP_KERNEL); + if (!ranges) + return -ENOMEM; + + if (copy_from_user(ranges, (void __user *)arg, payload_size)) { + ret = -EFAULT; + goto out; + } + + ret = blkdev_issue_copy(bdev, ranges->nr_range, ranges->range_list, bdev, GFP_KERNEL, 0); + if (copy_to_user((void __user *)arg, ranges, payload_size)) + ret = -EFAULT; +out: + kfree(ranges); + return ret; +} + static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode, unsigned long arg) { @@ -455,6 +490,8 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode, case BLKSECDISCARD: return blk_ioctl_discard(bdev, mode, arg, BLKDEV_DISCARD_SECURE); + case BLKCOPY: + return blk_ioctl_copy(bdev, mode, arg); case BLKZEROOUT: return blk_ioctl_zeroout(bdev, mode, arg); case BLKGETDISKSEQ: diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 55bca8f6e8ed..190911ea4311 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -78,6 +78,14 @@ struct range_entry { __u64 comp_len; }; +struct copy_range { + __u64 nr_range; + __u64 reserved; + + /* Range_list always must be at the end */ + struct range_entry range_list[]; +}; + /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */ #define FILE_DEDUPE_RANGE_SAME 0 #define FILE_DEDUPE_RANGE_DIFFERS 1 @@ -199,6 +207,7 @@ struct fsxattr { #define BLKROTATIONAL _IO(0x12,126) #define BLKZEROOUT _IO(0x12,127) #define BLKGETDISKSEQ _IOR(0x12,128,__u64) +#define BLKCOPY _IOWR(0x12, 129, struct copy_range) /* * A jump here: 130-136 are reserved for zoned block devices * (see uapi/linux/blkzoned.h) -- 2.30.0-rc0 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel