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Commit a279006a authored by Javier González's avatar Javier González Committed by Jens Axboe
Browse files

lightnvm: introduce max_phys_sects helper function



Target devices do not have access to the device driver operations.
Introduce a helper function that exposes the max. number of physical
sectors supported by the underlying device.

Signed-off-by: default avatarJavier González <javier@cnexlabs.com>
Signed-off-by: default avatarMatias Bjørling <m@bjorling.me>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 959e911b
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+8 −0
Original line number Diff line number Diff line
@@ -203,6 +203,14 @@ int nvm_set_bb_tbl(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas,
}
EXPORT_SYMBOL(nvm_set_bb_tbl);

int nvm_max_phys_sects(struct nvm_tgt_dev *tgt_dev)
{
	struct nvm_dev *dev = tgt_dev->parent;

	return dev->ops->max_phys_sect;
}
EXPORT_SYMBOL(nvm_max_phys_sects);

int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
{
	struct nvm_dev *dev = tgt_dev->parent;
+1 −0
Original line number Diff line number Diff line
@@ -529,6 +529,7 @@ extern void nvm_unregister(struct nvm_dev *);
extern int nvm_set_bb_tbl(struct nvm_dev *dev, struct ppa_addr *ppas,
							int nr_ppas, int type);

extern int nvm_max_phys_sects(struct nvm_tgt_dev *);
extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *);
extern void nvm_generic_to_addr_mode(struct nvm_dev *, struct nvm_rq *);
extern void nvm_addr_to_generic_mode(struct nvm_dev *, struct nvm_rq *);