lightnvm: export set bad block table
Bad blocks should be managed by block owners. This would be either
targets for data blocks or sysblk for system blocks.
In order to support this, export two functions: One to mark a block as
an specific type (e.g., bad block) and another to update the bad block
table on the device.
Move bad block management to rrpc.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 067e890..2b71b7e 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -675,6 +675,34 @@
queue_work(rrpc->kgc_wq, &gcb->ws_gc);
}
+static void __rrpc_mark_bad_block(struct nvm_dev *dev, struct ppa_addr *ppa)
+{
+ nvm_mark_blk(dev, *ppa, NVM_BLK_ST_BAD);
+ nvm_set_bb_tbl(dev, ppa, 1, NVM_BLK_T_GRWN_BAD);
+}
+
+static void rrpc_mark_bad_block(struct rrpc *rrpc, struct nvm_rq *rqd)
+{
+ struct nvm_dev *dev = rrpc->dev;
+ void *comp_bits = &rqd->ppa_status;
+ struct ppa_addr ppa, prev_ppa;
+ int nr_ppas = rqd->nr_ppas;
+ int bit;
+
+ if (rqd->nr_ppas == 1)
+ __rrpc_mark_bad_block(dev, &rqd->ppa_addr);
+
+ ppa_set_empty(&prev_ppa);
+ bit = -1;
+ while ((bit = find_next_bit(comp_bits, nr_ppas, bit + 1)) < nr_ppas) {
+ ppa = rqd->ppa_list[bit];
+ if (ppa_cmp_blk(ppa, prev_ppa))
+ continue;
+
+ __rrpc_mark_bad_block(dev, &ppa);
+ }
+}
+
static void rrpc_end_io_write(struct rrpc *rrpc, struct rrpc_rq *rrqd,
sector_t laddr, uint8_t npages)
{
@@ -701,8 +729,12 @@
uint8_t npages = rqd->nr_ppas;
sector_t laddr = rrpc_get_laddr(rqd->bio) - npages;
- if (bio_data_dir(rqd->bio) == WRITE)
+ if (bio_data_dir(rqd->bio) == WRITE) {
+ if (rqd->error == NVM_RSP_ERR_FAILWRITE)
+ rrpc_mark_bad_block(rrpc, rqd);
+
rrpc_end_io_write(rrpc, rrqd, laddr, npages);
+ }
bio_put(rqd->bio);