diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/host/core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 8c644838252e..90c24e88bb38 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -272,6 +272,21 @@ static inline int nvme_setup_discard(struct nvme_ns *ns, struct request *req, return BLK_MQ_RQ_QUEUE_OK; } +static inline void nvme_setup_write_zeroes(struct nvme_ns *ns, + struct request *req, struct nvme_command *cmnd) +{ + struct nvme_write_zeroes_cmd *write_zeroes = &cmnd->write_zeroes; + + memset(cmnd, 0, sizeof(*cmnd)); + write_zeroes->opcode = nvme_cmd_write_zeroes; + write_zeroes->nsid = cpu_to_le32(ns->ns_id); + write_zeroes->slba = + cpu_to_le64(nvme_block_nr(ns, blk_rq_pos(req))); + write_zeroes->length = + cpu_to_le16((blk_rq_bytes(req) >> ns->lba_shift) - 1); + write_zeroes->control = 0; +} + static inline void nvme_setup_rw(struct nvme_ns *ns, struct request *req, struct nvme_command *cmnd) { @@ -325,6 +340,8 @@ int nvme_setup_cmd(struct nvme_ns *ns, struct request *req, nvme_setup_flush(ns, cmd); else if (req_op(req) == REQ_OP_DISCARD) ret = nvme_setup_discard(ns, req, cmd); + else if (req_op(req) == REQ_OP_WRITE_ZEROES) + nvme_setup_write_zeroes(ns, req, cmd); else nvme_setup_rw(ns, req, cmd); @@ -943,6 +960,10 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id) if (ns->ctrl->oncs & NVME_CTRL_ONCS_DSM) nvme_config_discard(ns); + if (ns->ctrl->oncs & NVME_CTRL_ONCS_WRITE_ZEROES) + blk_queue_max_write_zeroes_sectors(ns->queue, + ((u32)(USHRT_MAX + 1) * bs) >> 9); + blk_mq_unfreeze_queue(disk->queue); } |