diff options
author | Javier González <jg@lightnvm.io> | 2016-11-28 22:39:09 +0100 |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2016-11-29 12:12:51 -0700 |
commit | 2a02e627c245bfa987b97707123d7747d7b0e486 (patch) | |
tree | 321f42522eaf00fa29a0a05612c11e4b515e92d5 /include | |
parent | eec44565e9ab13bbf5b48864a68871eabf1115c1 (diff) | |
download | op-kernel-dev-2a02e627c245bfa987b97707123d7747d7b0e486.zip op-kernel-dev-2a02e627c245bfa987b97707123d7747d7b0e486.tar.gz |
lightnvm: eliminate nvm_block abstraction on mm
In order to naturally support multi-target instances on an Open-Channel
SSD, targets should own the LUNs they get blocks from and manage
provisioning internally. This is done in several steps.
A part of this transformation is that targets manage their blocks
internally. This patch eliminates the nvm_block abstraction and moves
block management to the target logic. The rrpc target is transformed.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/lightnvm.h | 48 |
1 files changed, 2 insertions, 46 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h index ed04fa6..cc210cc 100644 --- a/include/linux/lightnvm.h +++ b/include/linux/lightnvm.h @@ -266,8 +266,6 @@ static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata) return rqdata + 1; } -struct nvm_block; - struct nvm_lun { int id; @@ -275,19 +273,6 @@ struct nvm_lun { int chnl_id; struct list_head list; - spinlock_t lock; - - /* lun block lists */ - struct list_head used_list; /* In-use blocks */ - struct list_head free_list; /* Not used blocks i.e. released - * and ready for use - */ - struct list_head bb_list; /* Bad blocks. Mutually exclusive with - * free_list and used_list - */ - unsigned int nr_free_blocks; /* Number of unused blocks */ - - struct nvm_block *blocks; }; enum { @@ -296,15 +281,6 @@ enum { NVM_BLK_ST_BAD = 0x8, /* Bad block */ }; -struct nvm_block { - struct list_head list; - struct nvm_lun *lun; - unsigned long id; - - void *priv; - int state; -}; - /* system block cpu representation */ struct nvm_sb_info { unsigned long seqnr; @@ -473,21 +449,6 @@ static inline void ppa_set_empty(struct ppa_addr *ppa_addr) ppa_addr->ppa = ADDR_EMPTY; } -static inline struct ppa_addr block_to_ppa(struct nvm_dev *dev, - struct nvm_block *blk) -{ - struct nvm_geo *geo = &dev->geo; - struct ppa_addr ppa; - struct nvm_lun *lun = blk->lun; - - ppa.ppa = 0; - ppa.g.blk = blk->id % geo->blks_per_lun; - ppa.g.lun = lun->lun_id; - ppa.g.ch = lun->chnl_id; - - return ppa; -} - static inline int ppa_cmp_blk(struct ppa_addr ppa1, struct ppa_addr ppa2) { if (ppa_empty(ppa1) || ppa_empty(ppa2)) @@ -539,8 +500,7 @@ typedef void (nvmm_unregister_fn)(struct nvm_dev *); typedef int (nvmm_create_tgt_fn)(struct nvm_dev *, struct nvm_ioctl_create *); typedef int (nvmm_remove_tgt_fn)(struct nvm_dev *, struct nvm_ioctl_remove *); typedef int (nvmm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *); -typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *, int); -typedef void (nvmm_mark_blk_fn)(struct nvm_dev *, struct ppa_addr, int); +typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct ppa_addr *, int); typedef int (nvmm_get_area_fn)(struct nvm_dev *, sector_t *, sector_t); typedef void (nvmm_put_area_fn)(struct nvm_dev *, sector_t); @@ -557,9 +517,6 @@ struct nvmm_type { nvmm_submit_io_fn *submit_io; nvmm_erase_blk_fn *erase_blk; - /* Bad block mgmt */ - nvmm_mark_blk_fn *mark_blk; - nvmm_get_area_fn *get_area; nvmm_put_area_fn *put_area; @@ -573,7 +530,6 @@ extern struct nvm_dev *nvm_alloc_dev(int); extern int nvm_register(struct nvm_dev *); extern void nvm_unregister(struct nvm_dev *); -extern void nvm_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type); extern int nvm_set_bb_tbl(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas, int type); @@ -584,7 +540,7 @@ extern int nvm_set_rqd_ppalist(struct nvm_dev *, struct nvm_rq *, const struct ppa_addr *, int, int); extern void nvm_free_rqd_ppalist(struct nvm_dev *, struct nvm_rq *); extern int nvm_erase_ppa(struct nvm_dev *, struct ppa_addr *, int, int); -extern int nvm_erase_blk(struct nvm_dev *, struct nvm_block *, int); +extern int nvm_erase_blk(struct nvm_dev *, struct ppa_addr *, int); extern void nvm_end_io(struct nvm_rq *, int); extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int, void *, int); |