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nvme: lightnvm: add late setup of block size and metadata

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The nvme driver sets up the size of the nvme namespace in two steps.
First it initializes the device with standard logical block and
metadata sizes, and then sets the correct logical block and metadata
size. Due to the OCSSD 2.0 specification relies on the namespace to
expose these sizes for correct initialization, let it be updated
appropriately on the LightNVM side as well.

Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Matias Bjørling 2018-03-30 00:05:05 +02:00 committed by Jens Axboe
parent 89a09c5643
commit 96257a8a7f
4 changed files with 12 additions and 3 deletions
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3
drivers/lightnvm/core.c
View file

@ -864,8 +864,6 @@ static int nvm_core_init(struct nvm_dev *dev)
geo->ws_seq = id->ws_seq;
geo->ws_per_chk = id->ws_per_chk;
geo->nr_chks = id->num_chk;
geo->sec_size = id->csecs;
geo->oob_size = id->sos;
geo->mccap = id->mccap;
geo->sec_per_chk = id->clba;
@ -893,7 +891,6 @@ static int nvm_core_init(struct nvm_dev *dev)
if (ret)
goto err_fmtype;
blk_queue_logical_block_size(dev->q, geo->sec_size);
return 0;
err_fmtype:
kfree(dev->lun_map);

2
drivers/nvme/host/core.c
View file

@ -1448,6 +1448,8 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
if (ns->noiob)
nvme_set_chunk_size(ns);
nvme_update_disk_info(disk, ns, id);
if (ns->ndev)
nvme_nvm_update_nvm_info(ns);
#ifdef CONFIG_NVME_MULTIPATH
if (ns->head->disk)
nvme_update_disk_info(ns->head->disk, ns, id);

8
drivers/nvme/host/lightnvm.c
View file

@ -812,6 +812,14 @@ int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg)
}
}
void nvme_nvm_update_nvm_info(struct nvme_ns *ns)
{
struct nvm_dev *ndev = ns->ndev;
ndev->identity.csecs = ndev->geo.sec_size = 1 << ns->lba_shift;
ndev->identity.sos = ndev->geo.oob_size = ns->ms;
}
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
{
struct request_queue *q = ns->queue;

2
drivers/nvme/host/nvme.h
View file

@ -500,12 +500,14 @@ static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
#endif /* CONFIG_NVME_MULTIPATH */
#ifdef CONFIG_NVM
void nvme_nvm_update_nvm_info(struct nvme_ns *ns);
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
void nvme_nvm_unregister(struct nvme_ns *ns);
int nvme_nvm_register_sysfs(struct nvme_ns *ns);
void nvme_nvm_unregister_sysfs(struct nvme_ns *ns);
int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg);
#else
static inline void nvme_nvm_update_nvm_info(struct nvme_ns *ns) {};
static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
int node)
{