diff options
Diffstat (limited to 'drivers/nvme/target/io-cmd.c')
| -rw-r--r-- | drivers/nvme/target/io-cmd.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/nvme/target/io-cmd.c b/drivers/nvme/target/io-cmd.c index c4dc9ea8ade0..4195115c7e54 100644 --- a/drivers/nvme/target/io-cmd.c +++ b/drivers/nvme/target/io-cmd.c @@ -170,6 +170,32 @@ static void nvmet_execute_dsm(struct nvmet_req *req) } } +static void nvmet_execute_write_zeroes(struct nvmet_req *req) +{ + struct nvme_write_zeroes_cmd *write_zeroes = &req->cmd->write_zeroes; + struct bio *bio = NULL; + u16 status = NVME_SC_SUCCESS; + sector_t sector; + sector_t nr_sector; + + sector = le64_to_cpu(write_zeroes->slba) << + (req->ns->blksize_shift - 9); + nr_sector = (((sector_t)le32_to_cpu(write_zeroes->length)) << + (req->ns->blksize_shift - 9)) + 1; + + if (__blkdev_issue_zeroout(req->ns->bdev, sector, nr_sector, + GFP_KERNEL, &bio, true)) + status = NVME_SC_INTERNAL | NVME_SC_DNR; + + if (bio) { + bio->bi_private = req; + bio->bi_end_io = nvmet_bio_done; + submit_bio(bio); + } else { + nvmet_req_complete(req, status); + } +} + int nvmet_parse_io_cmd(struct nvmet_req *req) { struct nvme_command *cmd = req->cmd; @@ -207,6 +233,9 @@ int nvmet_parse_io_cmd(struct nvmet_req *req) req->data_len = le32_to_cpu(cmd->dsm.nr + 1) * sizeof(struct nvme_dsm_range); return 0; + case nvme_cmd_write_zeroes: + req->execute = nvmet_execute_write_zeroes; + return 0; default: pr_err("nvmet: unhandled cmd %d\n", cmd->common.opcode); return NVME_SC_INVALID_OPCODE | NVME_SC_DNR; |