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nvmet: Introduce nvmet_dsm_len() helper 

Similar to the nvmet_rw_len helper.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[split patch, update changelog]
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2019-10-23 10:35:43 -06:00 committed by Jens Axboe
parent 6f86f2c9d9
commit 59ef0eaa77
2 changed files with 7 additions and 2 deletions
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3
drivers/nvme/target/io-cmd-file.c
View File

@ -379,8 +379,7 @@ u16 nvmet_file_parse_io_cmd(struct nvmet_req *req)
return 0;
case nvme_cmd_dsm:
req->execute = nvmet_file_execute_dsm;
req->data_len = (le32_to_cpu(cmd->dsm.nr) + 1) *
sizeof(struct nvme_dsm_range);
req->data_len = nvmet_dsm_len(req);
return 0;
case nvme_cmd_write_zeroes:
req->execute = nvmet_file_execute_write_zeroes;

6
drivers/nvme/target/nvmet.h
View File

@ -495,6 +495,12 @@ static inline u32 nvmet_rw_len(struct nvmet_req *req)
req->ns->blksize_shift;
}
static inline u32 nvmet_dsm_len(struct nvmet_req *req)
{
return (le32_to_cpu(req->cmd->dsm.nr) + 1) *
sizeof(struct nvme_dsm_range);
}
u16 errno_to_nvme_status(struct nvmet_req *req, int errno);
/* Convert a 32-bit number to a 16-bit 0's based number */