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lightnvm: enable to send hint to erase command

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Erases might be subject to host hints. An example is multi-plane
programming to erase blocks in parallel. Enable targets to specify this
hint.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Javier González 2016-11-28 22:38:54 +01:00 committed by Jens Axboe
parent 3dc87dd048
commit bb3149792e
6 changed files with 15 additions and 13 deletions
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9
drivers/lightnvm/core.c
View File

@ -202,9 +202,9 @@ int nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
}
EXPORT_SYMBOL(nvm_submit_io);
int nvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk)
int nvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, int flags)
{
return dev->mt->erase_blk(dev, blk, 0);
return dev->mt->erase_blk(dev, blk, flags);
}
EXPORT_SYMBOL(nvm_erase_blk);
@ -285,7 +285,8 @@ void nvm_free_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd)
}
EXPORT_SYMBOL(nvm_free_rqd_ppalist);
int nvm_erase_ppa(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas)
int nvm_erase_ppa(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas,
int flags)
{
struct nvm_rq rqd;
int ret;
@ -301,6 +302,8 @@ int nvm_erase_ppa(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas)
nvm_generic_to_addr_mode(dev, &rqd);
rqd.flags = flags;
ret = dev->ops->erase_block(dev, &rqd);
nvm_free_rqd_ppalist(dev, &rqd);

5
drivers/lightnvm/gennvm.c
View File

@ -593,12 +593,11 @@ static int gen_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
return dev->ops->submit_io(dev, rqd);
}
static int gen_erase_blk(struct nvm_dev *dev, struct nvm_block *blk,
unsigned long flags)
static int gen_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, int flags)
{
struct ppa_addr addr = block_to_ppa(dev, blk);
return nvm_erase_ppa(dev, &addr, 1);
return nvm_erase_ppa(dev, &addr, 1, flags);
}
static int gen_reserve_lun(struct nvm_dev *dev, int lunid)

2
drivers/lightnvm/rrpc.c
View File

@ -404,7 +404,7 @@ static void rrpc_block_gc(struct work_struct *work)
if (rrpc_move_valid_pages(rrpc, rblk))
goto put_back;
if (nvm_erase_blk(dev, rblk->parent))
if (nvm_erase_blk(dev, rblk->parent, 0))
goto put_back;
rrpc_put_blk(rrpc, rblk);

4
drivers/lightnvm/sysblk.c
View File

@ -379,7 +379,7 @@ static int nvm_prepare_new_sysblks(struct nvm_dev *dev, struct sysblk_scan *s)
ppa = &s->ppas[scan_ppa_idx(i, nxt_blk)];
ppa->g.pg = ppa_to_slc(dev, 0);
ret = nvm_erase_ppa(dev, ppa, 1);
ret = nvm_erase_ppa(dev, ppa, 1, 0);
if (ret)
return ret;
@ -725,7 +725,7 @@ int nvm_dev_factory(struct nvm_dev *dev, int flags)
/* continue to erase until list of blks until empty */
while ((ppa_cnt =
nvm_fact_get_blks(dev, ppas, max_ppas, blk_bitmap)) > 0)
nvm_erase_ppa(dev, ppas, ppa_cnt);
nvm_erase_ppa(dev, ppas, ppa_cnt, 0);
/* mark host reserved blocks free */
if (flags & NVM_FACTORY_RESET_HOST_BLKS) {

1
drivers/nvme/host/lightnvm.c
View File

@ -526,6 +526,7 @@ static int nvme_nvm_erase_block(struct nvm_dev *dev, struct nvm_rq *rqd)
c.erase.nsid = cpu_to_le32(ns->ns_id);
c.erase.spba = cpu_to_le64(rqd->ppa_addr.ppa);
c.erase.length = cpu_to_le16(rqd->nr_ppas - 1);
c.erase.control = cpu_to_le16(rqd->flags);
return nvme_submit_sync_cmd(q, (struct nvme_command *)&c, NULL, 0);
}

7
include/linux/lightnvm.h
View File

@ -470,8 +470,7 @@ typedef int (nvmm_open_blk_fn)(struct nvm_dev *, struct nvm_block *);
typedef int (nvmm_close_blk_fn)(struct nvm_dev *, struct nvm_block *);
typedef void (nvmm_flush_blk_fn)(struct nvm_dev *, struct nvm_block *);
typedef int (nvmm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *,
unsigned long);
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 struct nvm_lun *(nvmm_get_lun_fn)(struct nvm_dev *, int);
typedef int (nvmm_reserve_lun)(struct nvm_dev *, int);
@ -537,8 +536,8 @@ extern void nvm_addr_to_generic_mode(struct nvm_dev *, struct nvm_rq *);
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);
extern int nvm_erase_blk(struct nvm_dev *, struct nvm_block *);
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 void nvm_end_io(struct nvm_rq *, int);
extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int,
void *, int);