xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

lightnvm: move block fold outside of get_bb_tbl()

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/lightnvm/gennvm.c
View File

@@ -129,18 +129,21 @@ static int gennvm_luns_init(struct nvm_dev *dev, struct gen_nvm *gn)
return 0;
}
static int gennvm_block_bb(struct ppa_addr ppa, int nr_blocks, u8 *blks,
void *private)
static int gennvm_block_bb(struct nvm_dev *dev, struct ppa_addr ppa,
u8 *blks, int nr_blks, void *private)
{
struct gen_nvm *gn = private;
struct nvm_dev *dev = gn->dev;
struct gen_lun *lun;
struct nvm_block *blk;
int i;
nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
if (nr_blks < 0)
return nr_blks;
lun = &gn->luns[(dev->luns_per_chnl * ppa.g.ch) + ppa.g.lun];
for (i = 0; i < nr_blocks; i++) {
for (i = 0; i < nr_blks; i++) {
if (blks[i] == 0)
continue;
@@ -250,8 +253,7 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
ppa = generic_to_dev_addr(dev, ppa);
ret = dev->ops->get_bb_tbl(dev, ppa,
dev->blks_per_lun,
gennvm_block_bb, gn);
gennvm_block_bb, gn);
if (ret)
pr_err("gennvm: could not read BB table\n");
}