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lightnvm: move block fold outside of get_bb_tbl()

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The get block table command returns a list of blocks and planes
with their associated state. Users, such as gennvm and sysblk,
manages all planes as a single virtual block.

It was therefore  natural to fold the bad block list before it is
returned. However, to allow users, which manages on a per-plane
block level, to also use the interface, the get_bb_tbl interface is
changed to not fold by default and instead let the caller fold if
necessary.

Reviewed by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Matias Bjørling
2016-05-06 20:02:58 +02:00
committed by Jens Axboe
parent 4891d120b9
commit 22e8c9766a
5 changed files with 73 additions and 58 deletions
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29
drivers/lightnvm/sysblk.c
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@@ -93,12 +93,16 @@ void nvm_setup_sysblk_scan(struct nvm_dev *dev, struct sysblk_scan *s,
s->nr_rows = nvm_setup_sysblks(dev, sysblk_ppas);
}
static int sysblk_get_host_blks(struct ppa_addr ppa, int nr_blks, u8 *blks,
void *private)
static int sysblk_get_host_blks(struct nvm_dev *dev, struct ppa_addr ppa,
u8 *blks, int nr_blks, void *private)
{
struct sysblk_scan *s = private;
int i, nr_sysblk = 0;
nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
if (nr_blks < 0)
return nr_blks;
for (i = 0; i < nr_blks; i++) {
if (blks[i] != NVM_BLK_T_HOST)
continue;
@@ -130,7 +134,7 @@ static int nvm_get_all_sysblks(struct nvm_dev *dev, struct sysblk_scan *s,
dppa = generic_to_dev_addr(dev, ppas[i]);
s->row = i;
ret = dev->ops->get_bb_tbl(dev, dppa, dev->blks_per_lun, fn, s);
ret = dev->ops->get_bb_tbl(dev, dppa, fn, s);
if (ret) {
pr_err("nvm: failed bb tbl for ppa (%u %u)\n",
ppas[i].g.ch,
@@ -235,13 +239,17 @@ static int nvm_set_bb_tbl(struct nvm_dev *dev, struct sysblk_scan *s, int type)
return 0;
}
static int sysblk_get_free_blks(struct ppa_addr ppa, int nr_blks, u8 *blks,
void *private)
static int sysblk_get_free_blks(struct nvm_dev *dev, struct ppa_addr ppa,
u8 *blks, int nr_blks, void *private)
{
struct sysblk_scan *s = private;
struct ppa_addr *sppa;
int i, blkid = 0;
nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
if (nr_blks < 0)
return nr_blks;
for (i = 0; i < nr_blks; i++) {
if (blks[i] == NVM_BLK_T_HOST)
return -EEXIST;
@@ -578,13 +586,16 @@ static unsigned int factory_blk_offset(struct nvm_dev *dev, int ch, int lun)
BITS_PER_LONG;
}
static int nvm_factory_blks(struct ppa_addr ppa, int nr_blks, u8 *blks,
void *private)
static int nvm_factory_blks(struct nvm_dev *dev, struct ppa_addr ppa,
u8 *blks, int nr_blks, void *private)
{
struct factory_blks *f = private;
struct nvm_dev *dev = f->dev;
int i, lunoff;
nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
if (nr_blks < 0)
return nr_blks;
lunoff = factory_blk_offset(dev, ppa.g.ch, ppa.g.lun);
/* non-set bits correspond to the block must be erased */
@@ -661,7 +672,7 @@ static int nvm_fact_get_bb_tbl(struct nvm_dev *dev, struct ppa_addr ppa,
dev_ppa = generic_to_dev_addr(dev, ppa);
ret = dev->ops->get_bb_tbl(dev, dev_ppa, dev->blks_per_lun, fn, priv);
ret = dev->ops->get_bb_tbl(dev, dev_ppa, fn, priv);
if (ret)
pr_err("nvm: failed bb tbl for ch%u lun%u\n",
ppa.g.ch, ppa.g.blk);