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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

drivers/lightnvm/core.c

+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;

include/linux/lightnvm.h

+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 *);