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 05/10] block: add emulation for copy Date: Mon, 7 Feb 2022 19:43:43 +0530 [thread overview] Message-ID: <20220207141348.4235-6-nj.shetty@samsung.com> (raw) In-Reply-To: <20220207141348.4235-1-nj.shetty@samsung.com> For the devices which does not support copy, copy emulation is added. Copy-emulation is implemented by reading from source ranges into memory and writing to the corresponding destination synchronously. TODO: Optimise emulation. Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com> --- block/blk-lib.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) diff --git a/block/blk-lib.c b/block/blk-lib.c index 3ae2c27b566e..05c8cd02fffc 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -272,6 +272,65 @@ int blk_copy_offload(struct block_device *src_bdev, int nr_srcs, return cio_await_completion(cio); } +int blk_submit_rw_buf(struct block_device *bdev, void *buf, sector_t buf_len, + sector_t sector, unsigned int op, gfp_t gfp_mask) +{ + struct request_queue *q = bdev_get_queue(bdev); + struct bio *bio, *parent = NULL; + sector_t max_hw_len = min_t(unsigned int, queue_max_hw_sectors(q), + queue_max_segments(q) << (PAGE_SHIFT - SECTOR_SHIFT)) << SECTOR_SHIFT; + sector_t len, remaining; + int ret; + + for (remaining = buf_len; remaining > 0; remaining -= len) { + len = min_t(int, max_hw_len, remaining); +retry: + bio = bio_map_kern(q, buf, len, gfp_mask); + if (IS_ERR(bio)) { + len >>= 1; + if (len) + goto retry; + return PTR_ERR(bio); + } + + bio->bi_iter.bi_sector = sector >> SECTOR_SHIFT; + bio->bi_opf = op; + bio_set_dev(bio, bdev); + bio->bi_end_io = NULL; + bio->bi_private = NULL; + + if (parent) { + bio_chain(parent, bio); + submit_bio(parent); + } + parent = bio; + sector += len; + buf = (char *) buf + len; + } + ret = submit_bio_wait(bio); + bio_put(bio); + + return ret; +} + +static void *blk_alloc_buf(sector_t req_size, sector_t *alloc_size, gfp_t gfp_mask) +{ + int min_size = PAGE_SIZE; + void *buf; + + while (req_size >= min_size) { + buf = kvmalloc(req_size, gfp_mask); + if (buf) { + *alloc_size = req_size; + return buf; + } + /* retry half the requested size */ + req_size >>= 1; + } + + return NULL; +} + static inline int blk_copy_sanity_check(struct block_device *src_bdev, struct block_device *dst_bdev, struct range_entry *rlist, int nr) { @@ -297,6 +356,64 @@ static inline int blk_copy_sanity_check(struct block_device *src_bdev, return 0; } +static inline sector_t blk_copy_max_range(struct range_entry *rlist, int nr, sector_t *max_len) +{ + int i; + sector_t len = 0; + + *max_len = 0; + for (i = 0; i < nr; i++) { + *max_len = max(*max_len, rlist[i].len); + len += rlist[i].len; + } + + return len; +} + +/* + * If native copy offload feature is absent, this function tries to emulate, + * by copying data from source to a temporary buffer and from buffer to + * destination device. + */ +static int blk_copy_emulate(struct block_device *src_bdev, int nr, + struct range_entry *rlist, struct block_device *dest_bdev, gfp_t gfp_mask) +{ + void *buf = NULL; + int ret, nr_i = 0; + sector_t src, dst, copy_len, buf_len, read_len, copied_len, max_len = 0, remaining = 0; + + copy_len = blk_copy_max_range(rlist, nr, &max_len); + buf = blk_alloc_buf(max_len, &buf_len, gfp_mask); + if (!buf) + return -ENOMEM; + + for (copied_len = 0; copied_len < copy_len; copied_len += read_len) { + if (!remaining) { + rlist[nr_i].comp_len = 0; + src = rlist[nr_i].src; + dst = rlist[nr_i].dst; + remaining = rlist[nr_i++].len; + } + + read_len = min_t(sector_t, remaining, buf_len); + ret = blk_submit_rw_buf(src_bdev, buf, read_len, src, REQ_OP_READ, gfp_mask); + if (ret) + goto out; + src += read_len; + remaining -= read_len; + ret = blk_submit_rw_buf(dest_bdev, buf, read_len, dst, REQ_OP_WRITE, + gfp_mask); + if (ret) + goto out; + else + rlist[nr_i - 1].comp_len += read_len; + dst += read_len; + } +out: + kvfree(buf); + return ret; +} + static inline bool blk_check_copy_offload(struct request_queue *src_q, struct request_queue *dest_q) { @@ -346,6 +463,8 @@ int blkdev_issue_copy(struct block_device *src_bdev, int nr, if (blk_check_copy_offload(src_q, dest_q)) ret = blk_copy_offload(src_bdev, nr, rlist, dest_bdev, gfp_mask); + else + ret = blk_copy_emulate(src_bdev, nr, rlist, dest_bdev, gfp_mask); return ret; } -- 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 05/10] block: add emulation for copy Date: Mon, 7 Feb 2022 19:43:43 +0530 [thread overview] Message-ID: <20220207141348.4235-6-nj.shetty@samsung.com> (raw) In-Reply-To: <20220207141348.4235-1-nj.shetty@samsung.com> For the devices which does not support copy, copy emulation is added. Copy-emulation is implemented by reading from source ranges into memory and writing to the corresponding destination synchronously. TODO: Optimise emulation. Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com> --- block/blk-lib.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) diff --git a/block/blk-lib.c b/block/blk-lib.c index 3ae2c27b566e..05c8cd02fffc 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -272,6 +272,65 @@ int blk_copy_offload(struct block_device *src_bdev, int nr_srcs, return cio_await_completion(cio); } +int blk_submit_rw_buf(struct block_device *bdev, void *buf, sector_t buf_len, + sector_t sector, unsigned int op, gfp_t gfp_mask) +{ + struct request_queue *q = bdev_get_queue(bdev); + struct bio *bio, *parent = NULL; + sector_t max_hw_len = min_t(unsigned int, queue_max_hw_sectors(q), + queue_max_segments(q) << (PAGE_SHIFT - SECTOR_SHIFT)) << SECTOR_SHIFT; + sector_t len, remaining; + int ret; + + for (remaining = buf_len; remaining > 0; remaining -= len) { + len = min_t(int, max_hw_len, remaining); +retry: + bio = bio_map_kern(q, buf, len, gfp_mask); + if (IS_ERR(bio)) { + len >>= 1; + if (len) + goto retry; + return PTR_ERR(bio); + } + + bio->bi_iter.bi_sector = sector >> SECTOR_SHIFT; + bio->bi_opf = op; + bio_set_dev(bio, bdev); + bio->bi_end_io = NULL; + bio->bi_private = NULL; + + if (parent) { + bio_chain(parent, bio); + submit_bio(parent); + } + parent = bio; + sector += len; + buf = (char *) buf + len; + } + ret = submit_bio_wait(bio); + bio_put(bio); + + return ret; +} + +static void *blk_alloc_buf(sector_t req_size, sector_t *alloc_size, gfp_t gfp_mask) +{ + int min_size = PAGE_SIZE; + void *buf; + + while (req_size >= min_size) { + buf = kvmalloc(req_size, gfp_mask); + if (buf) { + *alloc_size = req_size; + return buf; + } + /* retry half the requested size */ + req_size >>= 1; + } + + return NULL; +} + static inline int blk_copy_sanity_check(struct block_device *src_bdev, struct block_device *dst_bdev, struct range_entry *rlist, int nr) { @@ -297,6 +356,64 @@ static inline int blk_copy_sanity_check(struct block_device *src_bdev, return 0; } +static inline sector_t blk_copy_max_range(struct range_entry *rlist, int nr, sector_t *max_len) +{ + int i; + sector_t len = 0; + + *max_len = 0; + for (i = 0; i < nr; i++) { + *max_len = max(*max_len, rlist[i].len); + len += rlist[i].len; + } + + return len; +} + +/* + * If native copy offload feature is absent, this function tries to emulate, + * by copying data from source to a temporary buffer and from buffer to + * destination device. + */ +static int blk_copy_emulate(struct block_device *src_bdev, int nr, + struct range_entry *rlist, struct block_device *dest_bdev, gfp_t gfp_mask) +{ + void *buf = NULL; + int ret, nr_i = 0; + sector_t src, dst, copy_len, buf_len, read_len, copied_len, max_len = 0, remaining = 0; + + copy_len = blk_copy_max_range(rlist, nr, &max_len); + buf = blk_alloc_buf(max_len, &buf_len, gfp_mask); + if (!buf) + return -ENOMEM; + + for (copied_len = 0; copied_len < copy_len; copied_len += read_len) { + if (!remaining) { + rlist[nr_i].comp_len = 0; + src = rlist[nr_i].src; + dst = rlist[nr_i].dst; + remaining = rlist[nr_i++].len; + } + + read_len = min_t(sector_t, remaining, buf_len); + ret = blk_submit_rw_buf(src_bdev, buf, read_len, src, REQ_OP_READ, gfp_mask); + if (ret) + goto out; + src += read_len; + remaining -= read_len; + ret = blk_submit_rw_buf(dest_bdev, buf, read_len, dst, REQ_OP_WRITE, + gfp_mask); + if (ret) + goto out; + else + rlist[nr_i - 1].comp_len += read_len; + dst += read_len; + } +out: + kvfree(buf); + return ret; +} + static inline bool blk_check_copy_offload(struct request_queue *src_q, struct request_queue *dest_q) { @@ -346,6 +463,8 @@ int blkdev_issue_copy(struct block_device *src_bdev, int nr, if (blk_check_copy_offload(src_q, dest_q)) ret = blk_copy_offload(src_bdev, nr, rlist, dest_bdev, gfp_mask); + else + ret = blk_copy_emulate(src_bdev, nr, rlist, dest_bdev, gfp_mask); return ret; } -- 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 14:55 UTC|newest] Thread overview: 184+ 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 ` [PATCH v2 04/10] block: Introduce a new ioctl for copy Nitesh Shetty 2022-02-07 14:13 ` [dm-devel] " 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 ` Nitesh Shetty [this message] 2022-02-07 14:13 ` [dm-devel] [PATCH v2 05/10] block: add emulation " 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 21:28 [PATCH v2 05/10] block: add emulation for copy kernel test robot -- strict thread matches above, loose matches on Subject: below -- 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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