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lightnvm: simplify geometry structure

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Currently, the device geometry is stored redundantly in the nvm_id and
nvm_geo structures at a device level. Moreover, when instantiating
targets on a specific number of LUNs, these structures are replicated
and manually modified to fit the instance channel and LUN partitioning.

Instead, create a generic geometry around nvm_geo, which can be used by
(i) the underlying device to describe the geometry of the whole device,
and (ii) instances to describe their geometry independently.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Javier González
2018-03-30 00:05:10 +02:00
committed by Jens Axboe
parent 43d4712721
commit e46f4e4822
12 changed files with 452 additions and 426 deletions
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35
drivers/lightnvm/pblk-sysfs.c
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@@ -113,26 +113,31 @@ static ssize_t pblk_sysfs_ppaf(struct pblk *pblk, char *page)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct nvm_addrf_12 *ppaf;
struct nvm_addrf_12 *geo_ppaf;
ssize_t sz = 0;
sz = snprintf(page, PAGE_SIZE - sz,
ppaf = (struct nvm_addrf_12 *)&pblk->ppaf;
geo_ppaf = (struct nvm_addrf_12 *)&geo->addrf;
sz = snprintf(page, PAGE_SIZE,
"g:(b:%d)blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
pblk->ppaf_bitsize,
pblk->ppaf.blk_offset, geo->ppaf.blk_len,
pblk->ppaf.pg_offset, geo->ppaf.pg_len,
pblk->ppaf.lun_offset, geo->ppaf.lun_len,
pblk->ppaf.ch_offset, geo->ppaf.ch_len,
pblk->ppaf.pln_offset, geo->ppaf.pln_len,
pblk->ppaf.sec_offset, geo->ppaf.sect_len);
pblk->ppaf_bitsize,
ppaf->blk_offset, ppaf->blk_len,
ppaf->pg_offset, ppaf->pg_len,
ppaf->lun_offset, ppaf->lun_len,
ppaf->ch_offset, ppaf->ch_len,
ppaf->pln_offset, ppaf->pln_len,
ppaf->sect_offset, ppaf->sect_len);
sz += snprintf(page + sz, PAGE_SIZE - sz,
"d:blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
geo->ppaf.blk_offset, geo->ppaf.blk_len,
geo->ppaf.pg_offset, geo->ppaf.pg_len,
geo->ppaf.lun_offset, geo->ppaf.lun_len,
geo->ppaf.ch_offset, geo->ppaf.ch_len,
geo->ppaf.pln_offset, geo->ppaf.pln_len,
geo->ppaf.sect_offset, geo->ppaf.sect_len);
geo_ppaf->blk_offset, geo_ppaf->blk_len,
geo_ppaf->pg_offset, geo_ppaf->pg_len,
geo_ppaf->lun_offset, geo_ppaf->lun_len,
geo_ppaf->ch_offset, geo_ppaf->ch_len,
geo_ppaf->pln_offset, geo_ppaf->pln_len,
geo_ppaf->sect_offset, geo_ppaf->sect_len);
return sz;
}
@@ -288,7 +293,7 @@ static ssize_t pblk_sysfs_lines_info(struct pblk *pblk, char *page)
"blk_line:%d, sec_line:%d, sec_blk:%d\n",
lm->blk_per_line,
lm->sec_per_line,
geo->sec_per_chk);
geo->clba);
return sz;
}