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lightnvm: enable metadata to be sent to device 

Enable metadata buffer to be sent to the device through the metadata
field on the physical rw nvme command. The size of the metadata buffer
must follow dev->oob_size * # of PPAs.

Signed-off-by: Javier González <javier@cnexlabs.com>
Updated description.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Javier González 2016-05-06 20:03:12 +02:00 committed by Jens Axboe
parent 57682b4915
commit 003fad376b
2 changed files with 3 additions and 2 deletions
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1
drivers/nvme/host/lightnvm.c
View File

@ -467,6 +467,7 @@ static inline void nvme_nvm_rqtocmd(struct request *rq, struct nvm_rq *rqd,
c->ph_rw.opcode = rqd->opcode;
c->ph_rw.nsid = cpu_to_le32(ns->ns_id);
c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa);
c->ph_rw.metadata = cpu_to_le64(rqd->meta_list);
c->ph_rw.control = cpu_to_le16(rqd->flags);
c->ph_rw.length = cpu_to_le16(rqd->nr_pages - 1);

4
include/linux/lightnvm.h
View File

@ -230,8 +230,8 @@ struct nvm_rq {
struct ppa_addr *ppa_list;
void *metadata;
dma_addr_t dma_metadata;
void *meta_list;
dma_addr_t dma_meta_list;
struct completion *wait;
nvm_end_io_fn *end_io;