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author | Matias Bjørling <m@bjorling.me> | 2016-05-06 20:03:08 +0200 |
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committer | Jens Axboe <axboe@fb.com> | 2016-05-06 12:51:10 -0600 |
commit | a63d5cf2031cc84443440caf32c175b3548ac6b8 (patch) | |
tree | a2b6b098163bdeaf048f32a446301c99d1f025d2 /drivers/lightnvm | |
parent | 5ebc7d9fe13ff9bd3622d0be3cd39c8751459be6 (diff) | |
download | linux-stable-a63d5cf2031cc84443440caf32c175b3548ac6b8.tar.gz linux-stable-a63d5cf2031cc84443440caf32c175b3548ac6b8.tar.bz2 linux-stable-a63d5cf2031cc84443440caf32c175b3548ac6b8.zip |
lightnvm: move responsibility for bad blk mgmt to target
We move the responsibility of managing the persistent bad block table to
the target. The target may choose to mark a block bad or retry writing
to it. Never the less, it should be the target that makes the decision
and not the media manager.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r-- | drivers/lightnvm/gennvm.c | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c index 9c6b141606e9..89b880a25cc6 100644 --- a/drivers/lightnvm/gennvm.c +++ b/drivers/lightnvm/gennvm.c @@ -419,6 +419,9 @@ static void gennvm_blk_set_type(struct nvm_dev *dev, struct ppa_addr *ppa, struct gen_lun *lun; struct nvm_block *blk; + pr_debug("gennvm: ppa (ch: %u lun: %u blk: %u pg: %u) -> %u\n", + ppa->g.ch, ppa->g.lun, ppa->g.blk, ppa->g.pg, type); + if (unlikely(ppa->g.ch > dev->nr_chnls || ppa->g.lun > dev->luns_per_chnl || ppa->g.blk > dev->blks_per_lun)) { @@ -437,39 +440,33 @@ static void gennvm_blk_set_type(struct nvm_dev *dev, struct ppa_addr *ppa, blk->state = type; } -/* mark block bad. It is expected the target recover from the error. */ +/* + * mark block bad in gennvm. It is expected that the target recovers separately + */ static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd) { - int i; - - if (!dev->ops->set_bb_tbl) - return; - - if (dev->ops->set_bb_tbl(dev, rqd, 1)) - return; + int bit = -1; + int max_secs = dev->ops->max_phys_sect; + void *comp_bits = &rqd->ppa_status; nvm_addr_to_generic_mode(dev, rqd); /* look up blocks and mark them as bad */ - if (rqd->nr_pages > 1) - for (i = 0; i < rqd->nr_pages; i++) - gennvm_blk_set_type(dev, &rqd->ppa_list[i], - NVM_BLK_ST_BAD); - else + if (rqd->nr_pages == 1) { gennvm_blk_set_type(dev, &rqd->ppa_addr, NVM_BLK_ST_BAD); + return; + } + + while ((bit = find_next_bit(comp_bits, max_secs, bit + 1)) < max_secs) + gennvm_blk_set_type(dev, &rqd->ppa_list[bit], NVM_BLK_ST_BAD); } static void gennvm_end_io(struct nvm_rq *rqd) { struct nvm_tgt_instance *ins = rqd->ins; - switch (rqd->error) { - case NVM_RSP_SUCCESS: - case NVM_RSP_ERR_EMPTYPAGE: - break; - case NVM_RSP_ERR_FAILWRITE: + if (rqd->error == NVM_RSP_ERR_FAILWRITE) gennvm_mark_blk_bad(rqd->dev, rqd); - } ins->tt->end_io(rqd); } |