diff options
Diffstat (limited to 'drivers/nvme/target/core.c')
| -rw-r--r-- | drivers/nvme/target/core.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 645ba7eee35db..b54748ad5f480 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -57,6 +57,17 @@ u16 nvmet_copy_from_sgl(struct nvmet_req *req, off_t off, void *buf, size_t len) return 0; } +static unsigned int nvmet_max_nsid(struct nvmet_subsys *subsys) +{ + struct nvmet_ns *ns; + + if (list_empty(&subsys->namespaces)) + return 0; + + ns = list_last_entry(&subsys->namespaces, struct nvmet_ns, dev_link); + return ns->nsid; +} + static u32 nvmet_async_event_result(struct nvmet_async_event *aen) { return aen->event_type | (aen->event_info << 8) | (aen->log_page << 16); @@ -334,6 +345,8 @@ void nvmet_ns_disable(struct nvmet_ns *ns) ns->enabled = false; list_del_rcu(&ns->dev_link); + if (ns->nsid == subsys->max_nsid) + subsys->max_nsid = nvmet_max_nsid(subsys); mutex_unlock(&subsys->lock); /* @@ -497,6 +510,7 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq, req->ops = ops; req->sg = NULL; req->sg_cnt = 0; + req->transfer_len = 0; req->rsp->status = 0; /* no support for fused commands yet */ @@ -546,6 +560,15 @@ void nvmet_req_uninit(struct nvmet_req *req) } EXPORT_SYMBOL_GPL(nvmet_req_uninit); +void nvmet_req_execute(struct nvmet_req *req) +{ + if (unlikely(req->data_len != req->transfer_len)) + nvmet_req_complete(req, NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR); + else + req->execute(req); +} +EXPORT_SYMBOL_GPL(nvmet_req_execute); + static inline bool nvmet_cc_en(u32 cc) { return (cc >> NVME_CC_EN_SHIFT) & 0x1; |