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lightnvm: pblk: fix mapping issue on failed writes

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On 1.2-devices, the mapping-out of remaning sectors in the
failed-write's block can result in an infinite loop,
stalling the write pipeline, fix this.

Fixes: 6a3abf5bee ("lightnvm: pblk: rework write error recovery path")
Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hans Holmberg 2018-10-09 13:11:59 +02:00 • committed by Jens Axboe
parent 1864de94ec
commit bf82fa2f58
2 changed files with 37 additions and 11 deletions
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36
include/linux/lightnvm.h
View file

@ -593,6 +593,42 @@ static inline u32 nvm_ppa64_to_ppa32(struct nvm_dev *dev,
return ppa32;
}
static inline int nvm_next_ppa_in_chk(struct nvm_tgt_dev *dev,
struct ppa_addr *ppa)
{
struct nvm_geo *geo = &dev->geo;
int last = 0;
if (geo->version == NVM_OCSSD_SPEC_12) {
int sec = ppa->g.sec;
sec++;
if (sec == geo->ws_min) {
int pg = ppa->g.pg;
sec = 0;
pg++;
if (pg == geo->num_pg) {
int pl = ppa->g.pl;
pg = 0;
pl++;
if (pl == geo->num_pln)
last = 1;
ppa->g.pl = pl;
}
ppa->g.pg = pg;
}
ppa->g.sec = sec;
} else {
ppa->m.sec++;
if (ppa->m.sec == geo->clba)
last = 1;
}
return last;
}
typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *);
typedef sector_t (nvm_tgt_capacity_fn)(void *);