[RFC PATCH v5 2/4] block: add simple copy support

orted for stacked devices and is done via copy emulation. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González Signed-off-by: Chaitanya Kulkarni --- block/blk-core.c | 102 -- block/blk-lib.c | 222

[RFC PATCH v5 3/4] nvme: add simple copy support

copy limits to queue limits. By default copy_offload is disabled. End-to-end protection is done by setting both PRINFOR and PRINFOW to 0. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González --- drivers/n

[RFC PATCH v5 4/4] dm kcopyd: add simple copy offload support

queued for completion. If multiple destinations were present, the completed destination is zeroed and pushed to pages_jobs to process copy offload for other destinations. In case of copy_offload failure, remaining destinations are processed via regular copying mechanism. Signed-off-by: SelvaKumar S

[RFC PATCH v5 1/4] block: make bio_map_kern() non static

Make bio_map_kern() non static, so that copy offload emulation can use it to add vmalloced memory to bio. Signed-off-by: SelvaKumar S Signed-off-by: Chaitanya Kulkarni --- block/blk-map.c| 2 +- include/linux/blkdev.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git

[RFC PATCH v5 0/4] add simple copy support

me_config_copy 10. Remove return in QUEUE_FLAG_COPY check 11. Remove unused OCFS SelvaKumar S (4): block: make bio_map_kern() non static block: add simple copy support nvme: add simple copy support dm kcopyd: add simple copy offload support block/blk-core.c | 102

[RFC PATCH v4 2/3] block: add simple copy support

. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González --- block/blk-core.c | 94 ++-- block/blk-lib.c | 223 ++ block/blk-merge.c | 2 + block/blk-setti

[RFC PATCH v4 3/3] nvme: add simple copy support

copy limits to queue limits. By default copy_offload is disabled. End-to-end protection is done by setting both PRINFOR and PRINFOW to 0. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González --- drivers/n

[RFC PATCH v4 1/3] block: export bio_map_kern()

Export bio_map_kern() so that copy offload emulation can use it to add vmalloced memory to bio. Signed-off-by: SelvaKumar S --- block/blk-map.c| 3 ++- include/linux/blkdev.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/block/blk-map.c b/block/blk-map.c index

[RFC PATCH v4 0/3] add simple copy support

de more readable 5. Don't use bio_set_op_attrs and remove op and set bi_opf directly 6. Use struct_size to calculate total_size 7. Fix partition remap of copy destination 8. Remove mcl,mssrl,msrc from nvme_ns 9. Initialize copy queue limits to 0 in nvme_config_copy 10. Remove return in QUEUE

[RFC PATCH v3 0/2] add simple copy support

trs and remove op and set bi_opf directly 6. Use struct_size to calculate total_size 7. Fix partition remap of copy destination 8. Remove mcl,mssrl,msrc from nvme_ns 9. Initialize copy queue limits to 0 in nvme_config_copy 10. Remove return in QUEUE_FLAG_COPY check 11. Remove unused OCFS SelvaKu

[RFC PATCH v3 1/2] block: add simple copy support

fault. max_copy_sectors = 0 indicates the device doesn't support copy. simple copy is not supported for stacked devices. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González --- block/blk-core.c | 94 ++--

[RFC PATCH v3 2/2] nvme: add simple copy support

Add support for TP 4065a ("Simple Copy Command"), v2020.05.04 ("Ratified") The implementation uses the payload passed from the block layer to form simple copy command. Set the device copy limits to queue limits. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi S

[RFC PATCH v2 2/2] nvme: add simple copy support

Add support for TP 4065a ("Simple Copy Command"), v2020.05.04 ("Ratified") The implementation uses the payload passed from the block layer to form simple copy command. Set the device copy limits to queue limits. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi S

[RFC PATCH v2 1/2] block: add simple copy support

. - max_copy_sectors - max_copy_ranges_sectors - max_copy_nr_ranges max_copy_sectors = 0 indicates the device doesn't support copy. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González --- block/blk-c

[RFC PATCH v2 0/2] add simple copy support

imits to 0 in nvme_config_copy 10. Remove return in QUEUE_FLAG_COPY check 11. Remove unused OCFS SelvaKumar S (2): block: add simple copy support nvme: add simple copy support block/blk-core.c | 94 ++--- block/blk-lib.c | 123 +++

[RFC PATCH 2/2] nvme: add simple copy support

Add support for TP 4065a ("Simple Copy Command"), v2020.05.04 ("Ratified") The implementation uses the payload passed from the block layer to form simple copy command. Set the device copy limits to queue limits. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi S

[RFC PATCH 1/2] block: add simple copy support

. - max_copy_sectors - max_copy_ranges_sectors - max_copy_nr_ranges max_copy_sectors = 0 indicates the device doesn't support copy. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier González --- block/blk-c

[RFC PATCH 0/2] add simple copy support

f all source_range length - *max_copy_nr_ranges* limits the number of source ranges - *max_copy_range_sectors* limit the maximum number of sectors that can constitute a single source range. SelvaKumar S (2): block: add simple copy support nvme: add simple copy support block/