From: Nitesh Shetty <nj.shetty@samsung.com> 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 [thread overview] Message-ID: <20220207141348.4235-5-nj.shetty@samsung.com> (raw) In-Reply-To: <20220207141348.4235-1-nj.shetty@samsung.com> 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 <nj.shetty@samsung.com> Signed-off-by: Arnav Dawn <arnav.dawn@samsung.com> --- 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
WARNING: multiple messages have this Message-ID (diff)
From: Nitesh Shetty <nj.shetty@samsung.com> To: mpatocka@redhat.com 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 Date: Mon, 7 Feb 2022 19:43:42 +0530 [thread overview] Message-ID: <20220207141348.4235-5-nj.shetty@samsung.com> (raw) In-Reply-To: <20220207141348.4235-1-nj.shetty@samsung.com> 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 <nj.shetty@samsung.com> Signed-off-by: Arnav Dawn <arnav.dawn@samsung.com> --- 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
next prev parent reply other threads:[~2022-02-07 14:54 UTC|newest] Thread overview: 183+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20220127071544uscas1p2f70f4d2509f3ebd574b7ed746d3fa551@uscas1p2.samsung.com> 2022-01-27 7:14 ` [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload Chaitanya Kulkarni 2022-01-28 19:59 ` Adam Manzanares 2022-01-28 19:59 ` [dm-devel] " Adam Manzanares 2022-01-31 11:49 ` Johannes Thumshirn 2022-01-31 11:49 ` Johannes Thumshirn 2022-01-31 19:03 ` Bart Van Assche 2022-01-31 19:03 ` [dm-devel] " Bart Van Assche 2022-02-01 1:54 ` Luis Chamberlain 2022-02-01 1:54 ` Luis Chamberlain 2022-02-01 10:21 ` Javier González 2022-02-01 18:31 ` [RFC PATCH 0/3] NVMe copy offload patches Mikulas Patocka 2022-02-01 18:31 ` [dm-devel] " Mikulas Patocka 2022-02-01 18:32 ` [RFC PATCH 1/3] block: add copy offload support Mikulas Patocka 2022-02-01 18:32 ` [dm-devel] " Mikulas Patocka 2022-02-01 19:18 ` Bart Van Assche 2022-02-01 19:18 ` [dm-devel] " Bart Van Assche 2022-02-03 18:50 ` Mikulas Patocka 2022-02-03 18:50 ` Mikulas Patocka 2022-02-03 20:11 ` Keith Busch 2022-02-03 20:11 ` [dm-devel] " Keith Busch 2022-02-03 22:49 ` Bart Van Assche 2022-02-03 22:49 ` Bart Van Assche 2022-02-04 12:09 ` [dm-devel] " Mikulas Patocka 2022-02-04 12:09 ` Mikulas Patocka 2022-02-04 13:34 ` Jens Axboe 2022-02-04 13:34 ` [dm-devel] " Jens Axboe 2022-02-02 16:21 ` Keith Busch 2022-02-02 16:21 ` [dm-devel] " Keith Busch 2022-02-02 16:40 ` Mikulas Patocka 2022-02-02 16:40 ` [dm-devel] " Mikulas Patocka 2022-02-02 18:40 ` Knight, Frederick 2022-02-02 18:40 ` [dm-devel] " Knight, Frederick 2022-02-01 18:33 ` [RFC PATCH 2/3] nvme: " Mikulas Patocka 2022-02-01 18:33 ` [dm-devel] " Mikulas Patocka 2022-02-01 19:18 ` Bart Van Assche 2022-02-01 19:18 ` [dm-devel] " Bart Van Assche 2022-02-01 19:25 ` Mikulas Patocka 2022-02-01 19:25 ` [dm-devel] " Mikulas Patocka 2022-02-01 18:33 ` [RFC PATCH 3/3] nvme: add the "debug" host driver Mikulas Patocka 2022-02-01 18:33 ` [dm-devel] " Mikulas Patocka 2022-02-01 21:32 ` kernel test robot 2022-02-02 6:01 ` Adam Manzanares 2022-02-02 6:01 ` [dm-devel] " Adam Manzanares 2022-02-03 16:06 ` Luis Chamberlain 2022-02-03 16:06 ` Luis Chamberlain 2022-02-03 16:15 ` [dm-devel] " Christoph Hellwig 2022-02-03 16:15 ` Christoph Hellwig 2022-02-03 19:34 ` Luis Chamberlain 2022-02-03 19:34 ` [dm-devel] " Luis Chamberlain 2022-02-03 19:46 ` Adam Manzanares 2022-02-03 19:46 ` [dm-devel] " Adam Manzanares 2022-02-03 20:57 ` Mikulas Patocka 2022-02-03 20:57 ` Mikulas Patocka 2022-02-03 22:52 ` Adam Manzanares 2022-02-03 22:52 ` [dm-devel] " Adam Manzanares 2022-02-04 3:00 ` Chaitanya Kulkarni 2022-02-04 3:00 ` [dm-devel] " Chaitanya Kulkarni 2022-02-04 3:05 ` Chaitanya Kulkarni 2022-02-04 3:05 ` [dm-devel] " Chaitanya Kulkarni 2022-02-02 7:23 ` kernel test robot 2022-02-02 7:23 ` kernel test robot 2022-02-02 8:00 ` Chaitanya Kulkarni 2022-02-02 8:00 ` [dm-devel] " Chaitanya Kulkarni 2022-02-02 12:38 ` Klaus Jensen 2022-02-02 12:38 ` [dm-devel] " Klaus Jensen 2022-02-03 15:38 ` Luis Chamberlain 2022-02-03 15:38 ` Luis Chamberlain 2022-02-03 16:52 ` Keith Busch 2022-02-03 16:52 ` [dm-devel] " Keith Busch 2022-02-03 19:50 ` Adam Manzanares 2022-02-03 19:50 ` [dm-devel] " Adam Manzanares 2022-02-04 3:12 ` Chaitanya Kulkarni 2022-02-04 3:12 ` [dm-devel] " Chaitanya Kulkarni 2022-02-04 6:28 ` Damien Le Moal 2022-02-04 6:28 ` [dm-devel] " Damien Le Moal 2022-02-04 7:58 ` Chaitanya Kulkarni 2022-02-04 7:58 ` [dm-devel] " Chaitanya Kulkarni 2022-02-04 8:24 ` Javier González 2022-02-04 8:24 ` [dm-devel] " Javier González 2022-02-04 9:58 ` Chaitanya Kulkarni 2022-02-04 9:58 ` [dm-devel] " Chaitanya Kulkarni 2022-02-04 11:34 ` Javier González 2022-02-04 11:34 ` [dm-devel] " Javier González 2022-02-04 14:15 ` Hannes Reinecke 2022-02-04 14:15 ` [dm-devel] " Hannes Reinecke 2022-02-04 14:24 ` Keith Busch 2022-02-04 14:24 ` [dm-devel] " Keith Busch 2022-02-04 16:01 ` Christoph Hellwig 2022-02-04 16:01 ` [dm-devel] " Christoph Hellwig 2022-02-04 19:41 ` [RFC PATCH 0/3] NVMe copy offload patches Nitesh Shetty 2022-02-04 19:41 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141901epcas5p162ec2387815be7a1fd67ce0ab7082119@epcas5p1.samsung.com> 2022-02-07 14:13 ` [PATCH v2 00/10] Add Copy offload support Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141908epcas5p4f270c89fc32434ea8b525fa973098231@epcas5p4.samsung.com> 2022-02-07 14:13 ` [PATCH v2 01/10] block: make bio_map_kern() non static Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141913epcas5p4d41cb549b7cca1ede5c7a66bbd110da0@epcas5p4.samsung.com> 2022-02-07 14:13 ` [PATCH v2 02/10] block: Introduce queue limits for copy-offload support Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-08 7:01 ` Damien Le Moal 2022-02-08 7:01 ` [dm-devel] " Damien Le Moal 2022-02-08 18:43 ` Nitesh Shetty 2022-02-08 18:43 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141918epcas5p4f9badc0c3f3f0913f091c850d2d3bd81@epcas5p4.samsung.com> 2022-02-07 14:13 ` [PATCH v2 03/10] block: Add copy offload support infrastructure Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-07 22:45 ` kernel test robot 2022-02-07 22:45 ` kernel test robot 2022-02-07 22:45 ` [dm-devel] " kernel test robot 2022-02-07 23:26 ` kernel test robot 2022-02-07 23:26 ` kernel test robot 2022-02-07 23:26 ` [dm-devel] " kernel test robot 2022-02-08 7:21 ` Damien Le Moal 2022-02-08 7:21 ` [dm-devel] " Damien Le Moal 2022-02-09 10:22 ` Nitesh Shetty 2022-02-09 10:22 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577@epcas5p2.samsung.com> 2022-02-07 14:13 ` Nitesh Shetty [this message] 2022-02-07 14:13 ` [dm-devel] [PATCH v2 04/10] block: Introduce a new ioctl for copy Nitesh Shetty 2022-02-09 3:39 ` kernel test robot 2022-02-09 3:39 ` kernel test robot 2022-02-09 3:39 ` kernel test robot [not found] ` <CGME20220207141930epcas5p2bcbff65f78ad1dede64648d73ddb3770@epcas5p2.samsung.com> 2022-02-07 14:13 ` [PATCH v2 05/10] block: add emulation " Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-08 3:20 ` kernel test robot 2022-02-08 3:20 ` kernel test robot 2022-02-08 3:20 ` [dm-devel] " kernel test robot 2022-02-16 13:32 ` Mikulas Patocka 2022-02-16 13:32 ` Mikulas Patocka 2022-02-17 13:18 ` Nitesh Shetty 2022-02-17 13:18 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141937epcas5p2bd57ae35056c69b3e2f9ee2348d6af19@epcas5p2.samsung.com> 2022-02-07 14:13 ` [PATCH v2 06/10] nvme: add copy support Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-10 7:08 ` kernel test robot 2022-02-10 7:08 ` kernel test robot 2022-02-10 7:08 ` kernel test robot [not found] ` <CGME20220207141942epcas5p4bda894a5833513c9211dcecc7928a951@epcas5p4.samsung.com> 2022-02-07 14:13 ` [PATCH v2 07/10] nvmet: add copy command support for bdev and file ns Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-07 18:10 ` kernel test robot 2022-02-07 18:10 ` kernel test robot 2022-02-07 18:10 ` [dm-devel] " kernel test robot 2022-02-07 20:12 ` kernel test robot 2022-02-07 20:12 ` kernel test robot 2022-02-07 20:12 ` [dm-devel] " kernel test robot 2022-02-10 8:31 ` kernel test robot 2022-02-10 8:31 ` kernel test robot 2022-02-10 8:31 ` kernel test robot [not found] ` <CGME20220207141948epcas5p4534f6bdc5a1e2e676d7d09c04f8b4a5b@epcas5p4.samsung.com> 2022-02-07 14:13 ` [PATCH v2 08/10] dm: Add support for copy offload Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-16 13:51 ` Mikulas Patocka 2022-02-16 13:51 ` Mikulas Patocka 2022-02-24 12:42 ` Nitesh Shetty 2022-02-24 12:42 ` [dm-devel] " Nitesh Shetty 2022-02-25 9:12 ` Mikulas Patocka 2022-02-25 9:12 ` [dm-devel] " Mikulas Patocka [not found] ` <CGME20220207141953epcas5p32ccc3c0bbe642cea074edefcc32302a5@epcas5p3.samsung.com> 2022-02-07 14:13 ` [PATCH v2 09/10] dm: Enable copy offload for dm-linear target Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty [not found] ` <CGME20220207141958epcas5p25f1cd06726217696d13c2dfbea010565@epcas5p2.samsung.com> 2022-02-07 14:13 ` [PATCH v2 10/10] dm kcopyd: use copy offload support Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " Nitesh Shetty 2022-02-07 9:57 ` [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload Nitesh Shetty 2022-02-07 9:57 ` [dm-devel] " Nitesh Shetty 2022-02-02 5:57 ` Kanchan Joshi 2022-02-02 5:57 ` [dm-devel] " Kanchan Joshi 2022-02-07 10:45 ` David Disseldorp 2022-02-07 10:45 ` [dm-devel] " David Disseldorp 2022-03-01 17:34 ` Nikos Tsironis 2022-03-01 17:34 ` [dm-devel] " Nikos Tsironis 2022-03-01 21:32 ` Chaitanya Kulkarni 2022-03-03 18:36 ` [dm-devel] " Nikos Tsironis 2022-03-03 18:36 ` Nikos Tsironis 2022-03-08 20:48 ` Nikos Tsironis 2022-03-08 20:48 ` [dm-devel] " Nikos Tsironis 2022-03-09 8:51 ` Mikulas Patocka 2022-03-09 8:51 ` Mikulas Patocka 2022-03-09 15:49 ` Nikos Tsironis 2022-03-09 15:49 ` [dm-devel] " Nikos Tsironis [not found] <CGME20220209075901epcas5p3cff468deadd8ef836522f032bd4ed36c@epcas5p3.samsung.com> 2022-02-08 23:31 ` [PATCH v2 03/10] block: Add copy offload support infrastructure kernel test robot 2022-02-09 7:48 ` Dan Carpenter 2022-02-09 7:48 ` [dm-devel] " Dan Carpenter 2022-02-09 7:48 ` Dan Carpenter 2022-02-09 10:32 ` Nitesh Shetty 2022-02-10 6:13 ` Nitesh Shetty 2022-02-09 10:32 ` [dm-devel] " Nitesh Shetty 2022-02-10 22:49 [PATCH v2 07/10] nvmet: add copy command support for bdev and file ns kernel test robot 2022-02-11 7:52 ` Dan Carpenter 2022-02-11 7:52 ` [dm-devel] " Dan Carpenter 2022-02-11 7:52 ` Dan Carpenter
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