Commit 003fad37 authored by Javier González's avatar Javier González Committed by Jens Axboe
Browse files

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: default avatarJavier González <javier@cnexlabs.com>
Updated description.
Signed-off-by: default avatarMatias Bjørling <m@bjorling.me>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 57682b49

drivers/nvme/host/lightnvm.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/lightnvm.h

+2 −2
Original line number Diff line number Diff line
@@ -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;