6 files changed, 265 insertions, 187 deletions

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 964352720a03..8df188e0767e 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -717,46 +717,6 @@ static void nvm_free_rqd_ppalist(struct nvm_tgt_dev *tgt_dev,
 	nvm_dev_dma_free(tgt_dev->parent, rqd->ppa_list, rqd->dma_ppa_list);
 }
 
-int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct nvm_chk_meta *meta,
-		struct ppa_addr ppa, int nchks)
-{
-	struct nvm_dev *dev = tgt_dev->parent;
-
-	nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
-
-	return dev->ops->get_chk_meta(tgt_dev->parent, meta,
-						(sector_t)ppa.ppa, nchks);
-}
-EXPORT_SYMBOL(nvm_get_chunk_meta);
-
-int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
-		       int nr_ppas, int type)
-{
-	struct nvm_dev *dev = tgt_dev->parent;
-	struct nvm_rq rqd;
-	int ret;
-
-	if (nr_ppas > NVM_MAX_VLBA) {
-		pr_err("nvm: unable to update all blocks atomically\n");
-		return -EINVAL;
-	}
-
-	memset(&rqd, 0, sizeof(struct nvm_rq));
-
-	nvm_set_rqd_ppalist(tgt_dev, &rqd, ppas, nr_ppas);
-	nvm_rq_tgt_to_dev(tgt_dev, &rqd);
-
-	ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
-	nvm_free_rqd_ppalist(tgt_dev, &rqd);
-	if (ret) {
-		pr_err("nvm: failed bb mark\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(nvm_set_tgt_bb_tbl);
-
 static int nvm_set_flags(struct nvm_geo *geo, struct nvm_rq *rqd)
 {
 	int flags = 0;
@@ -830,27 +790,159 @@ void nvm_end_io(struct nvm_rq *rqd)
 }
 EXPORT_SYMBOL(nvm_end_io);
 
+static int nvm_submit_io_sync_raw(struct nvm_dev *dev, struct nvm_rq *rqd)
+{
+	if (!dev->ops->submit_io_sync)
+		return -ENODEV;
+
+	rqd->flags = nvm_set_flags(&dev->geo, rqd);
+
+	return dev->ops->submit_io_sync(dev, rqd);
+}
+
+static int nvm_bb_chunk_sense(struct nvm_dev *dev, struct ppa_addr ppa)
+{
+	struct nvm_rq rqd = { NULL };
+	struct bio bio;
+	struct bio_vec bio_vec;
+	struct page *page;
+	int ret;
+
+	page = alloc_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+
+	bio_init(&bio, &bio_vec, 1);
+	bio_add_page(&bio, page, PAGE_SIZE, 0);
+	bio_set_op_attrs(&bio, REQ_OP_READ, 0);
+
+	rqd.bio = &bio;
+	rqd.opcode = NVM_OP_PREAD;
+	rqd.is_seq = 1;
+	rqd.nr_ppas = 1;
+	rqd.ppa_addr = generic_to_dev_addr(dev, ppa);
+
+	ret = nvm_submit_io_sync_raw(dev, &rqd);
+	if (ret)
+		return ret;
+
+	__free_page(page);
+
+	return rqd.error;
+}
+
 /*
- * folds a bad block list from its plane representation to its virtual
- * block representation. The fold is done in place and reduced size is
- * returned.
- *
- * If any of the planes status are bad or grown bad block, the virtual block
- * is marked bad. If not bad, the first plane state acts as the block state.
+ * Scans a 1.2 chunk first and last page to determine if its state.
+ * If the chunk is found to be open, also scan it to update the write
+ * pointer.
  */
-int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
+static int nvm_bb_chunk_scan(struct nvm_dev *dev, struct ppa_addr ppa,
+			     struct nvm_chk_meta *meta)
 {
 	struct nvm_geo *geo = &dev->geo;
-	int blk, offset, pl, blktype;
+	int ret, pg, pl;
 
-	if (nr_blks != geo->num_chk * geo->pln_mode)
-		return -EINVAL;
+	/* sense first page */
+	ret = nvm_bb_chunk_sense(dev, ppa);
+	if (ret < 0) /* io error */
+		return ret;
+	else if (ret == 0) /* valid data */
+		meta->state = NVM_CHK_ST_OPEN;
+	else if (ret > 0) {
+		/*
+		 * If empty page, the chunk is free, else it is an
+		 * actual io error. In that case, mark it offline.
+		 */
+		switch (ret) {
+		case NVM_RSP_ERR_EMPTYPAGE:
+			meta->state = NVM_CHK_ST_FREE;
+			return 0;
+		case NVM_RSP_ERR_FAILCRC:
+		case NVM_RSP_ERR_FAILECC:
+		case NVM_RSP_WARN_HIGHECC:
+			meta->state = NVM_CHK_ST_OPEN;
+			goto scan;
+		default:
+			return -ret; /* other io error */
+		}
+	}
+
+	/* sense last page */
+	ppa.g.pg = geo->num_pg - 1;
+	ppa.g.pl = geo->num_pln - 1;
+
+	ret = nvm_bb_chunk_sense(dev, ppa);
+	if (ret < 0) /* io error */
+		return ret;
+	else if (ret == 0) { /* Chunk fully written */
+		meta->state = NVM_CHK_ST_CLOSED;
+		meta->wp = geo->clba;
+		return 0;
+	} else if (ret > 0) {
+		switch (ret) {
+		case NVM_RSP_ERR_EMPTYPAGE:
+		case NVM_RSP_ERR_FAILCRC:
+		case NVM_RSP_ERR_FAILECC:
+		case NVM_RSP_WARN_HIGHECC:
+			meta->state = NVM_CHK_ST_OPEN;
+			break;
+		default:
+			return -ret; /* other io error */
+		}
+	}
+
+scan:
+	/*
+	 * chunk is open, we scan sequentially to update the write pointer.
+	 * We make the assumption that targets write data across all planes
+	 * before moving to the next page.
+	 */
+	for (pg = 0; pg < geo->num_pg; pg++) {
+		for (pl = 0; pl < geo->num_pln; pl++) {
+			ppa.g.pg = pg;
+			ppa.g.pl = pl;
+
+			ret = nvm_bb_chunk_sense(dev, ppa);
+			if (ret < 0) /* io error */
+				return ret;
+			else if (ret == 0) {
+				meta->wp += geo->ws_min;
+			} else if (ret > 0) {
+				switch (ret) {
+				case NVM_RSP_ERR_EMPTYPAGE:
+					return 0;
+				case NVM_RSP_ERR_FAILCRC:
+				case NVM_RSP_ERR_FAILECC:
+				case NVM_RSP_WARN_HIGHECC:
+					meta->wp += geo->ws_min;
+					break;
+				default:
+					return -ret; /* other io error */
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * folds a bad block list from its plane representation to its
+ * chunk representation.
+ *
+ * If any of the planes status are bad or grown bad, the chunk is marked
+ * offline. If not bad, the first plane state acts as the chunk state.
+ */
+static int nvm_bb_to_chunk(struct nvm_dev *dev, struct ppa_addr ppa,
+			   u8 *blks, int nr_blks, struct nvm_chk_meta *meta)
+{
+	struct nvm_geo *geo = &dev->geo;
+	int ret, blk, pl, offset, blktype;
 
 	for (blk = 0; blk < geo->num_chk; blk++) {
 		offset = blk * geo->pln_mode;
 		blktype = blks[offset];
 
-		/* Bad blocks on any planes take precedence over other types */
 		for (pl = 0; pl < geo->pln_mode; pl++) {
 			if (blks[offset + pl] &
 					(NVM_BLK_T_BAD|NVM_BLK_T_GRWN_BAD)) {
@@ -859,23 +951,124 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
 			}
 		}
 
-		blks[blk] = blktype;
+		ppa.g.blk = blk;
+
+		meta->wp = 0;
+		meta->type = NVM_CHK_TP_W_SEQ;
+		meta->wi = 0;
+		meta->slba = generic_to_dev_addr(dev, ppa).ppa;
+		meta->cnlb = dev->geo.clba;
+
+		if (blktype == NVM_BLK_T_FREE) {
+			ret = nvm_bb_chunk_scan(dev, ppa, meta);
+			if (ret)
+				return ret;
+		} else {
+			meta->state = NVM_CHK_ST_OFFLINE;
+		}
+
+		meta++;
 	}
 
-	return geo->num_chk;
+	return 0;
+}
+
+static int nvm_get_bb_meta(struct nvm_dev *dev, sector_t slba,
+			   int nchks, struct nvm_chk_meta *meta)
+{
+	struct nvm_geo *geo = &dev->geo;
+	struct ppa_addr ppa;
+	u8 *blks;
+	int ch, lun, nr_blks;
+	int ret;
+
+	ppa.ppa = slba;
+	ppa = dev_to_generic_addr(dev, ppa);
+
+	if (ppa.g.blk != 0)
+		return -EINVAL;
+
+	if ((nchks % geo->num_chk) != 0)
+		return -EINVAL;
+
+	nr_blks = geo->num_chk * geo->pln_mode;
+
+	blks = kmalloc(nr_blks, GFP_KERNEL);
+	if (!blks)
+		return -ENOMEM;
+
+	for (ch = ppa.g.ch; ch < geo->num_ch; ch++) {
+		for (lun = ppa.g.lun; lun < geo->num_lun; lun++) {
+			struct ppa_addr ppa_gen, ppa_dev;
+
+			if (!nchks)
+				goto done;
+
+			ppa_gen.ppa = 0;
+			ppa_gen.g.ch = ch;
+			ppa_gen.g.lun = lun;
+			ppa_dev = generic_to_dev_addr(dev, ppa_gen);
+
+			ret = dev->ops->get_bb_tbl(dev, ppa_dev, blks);
+			if (ret)
+				goto done;
+
+			ret = nvm_bb_to_chunk(dev, ppa_gen, blks, nr_blks,
+									meta);
+			if (ret)
+				goto done;
+
+			meta += geo->num_chk;
+			nchks -= geo->num_chk;
+		}
+	}
+done:
+	kfree(blks);
+	return ret;
 }
-EXPORT_SYMBOL(nvm_bb_tbl_fold);
 
-int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr ppa,
-		       u8 *blks)
+int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct ppa_addr ppa,
+		       int nchks, struct nvm_chk_meta *meta)
 {
 	struct nvm_dev *dev = tgt_dev->parent;
 
 	nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
 
-	return dev->ops->get_bb_tbl(dev, ppa, blks);
+	if (dev->geo.version == NVM_OCSSD_SPEC_12)
+		return nvm_get_bb_meta(dev, (sector_t)ppa.ppa, nchks, meta);
+
+	return dev->ops->get_chk_meta(dev, (sector_t)ppa.ppa, nchks, meta);
+}
+EXPORT_SYMBOL_GPL(nvm_get_chunk_meta);
+
+int nvm_set_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
+		       int nr_ppas, int type)
+{
+	struct nvm_dev *dev = tgt_dev->parent;
+	struct nvm_rq rqd;
+	int ret;
+
+	if (dev->geo.version == NVM_OCSSD_SPEC_20)
+		return 0;
+
+	if (nr_ppas > NVM_MAX_VLBA) {
+		pr_err("nvm: unable to update all blocks atomically\n");
+		return -EINVAL;
+	}
+
+	memset(&rqd, 0, sizeof(struct nvm_rq));
+
+	nvm_set_rqd_ppalist(tgt_dev, &rqd, ppas, nr_ppas);
+	nvm_rq_tgt_to_dev(tgt_dev, &rqd);
+
+	ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
+	nvm_free_rqd_ppalist(tgt_dev, &rqd);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
 }
-EXPORT_SYMBOL(nvm_get_tgt_bb_tbl);
+EXPORT_SYMBOL_GPL(nvm_set_chunk_meta);
 
 static int nvm_core_init(struct nvm_dev *dev)
 {
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 72de7456845b..e0b513d07e14 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -27,7 +27,7 @@ static void pblk_line_mark_bb(struct work_struct *work)
 	struct ppa_addr *ppa = line_ws->priv;
 	int ret;
 
-	ret = nvm_set_tgt_bb_tbl(dev, ppa, 1, NVM_BLK_T_GRWN_BAD);
+	ret = nvm_set_chunk_meta(dev, ppa, 1, NVM_BLK_T_GRWN_BAD);
 	if (ret) {
 		struct pblk_line *line;
 		int pos;
@@ -110,7 +110,7 @@ static void pblk_end_io_erase(struct nvm_rq *rqd)
  *
  * The caller is responsible for freeing the returned structure
  */
-struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk)
+struct nvm_chk_meta *pblk_get_chunk_meta(struct pblk *pblk)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
@@ -126,7 +126,7 @@ struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk)
 	if (!meta)
 		return ERR_PTR(-ENOMEM);
 
-	ret = nvm_get_chunk_meta(dev, meta, ppa, geo->all_chunks);
+	ret = nvm_get_chunk_meta(dev, ppa, geo->all_chunks, meta);
 	if (ret) {
 		kfree(meta);
 		return ERR_PTR(-EIO);
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 039f62d05e84..53bd52114aee 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -540,67 +540,6 @@ static void pblk_lines_free(struct pblk *pblk)
 	kfree(pblk->lines);
 }
 
-static int pblk_bb_get_tbl(struct nvm_tgt_dev *dev, struct pblk_lun *rlun,
-			   u8 *blks, int nr_blks)
-{
-	struct ppa_addr ppa;
-	int ret;
-
-	ppa.ppa = 0;
-	ppa.g.ch = rlun->bppa.g.ch;
-	ppa.g.lun = rlun->bppa.g.lun;
-
-	ret = nvm_get_tgt_bb_tbl(dev, ppa, blks);
-	if (ret)
-		return ret;
-
-	nr_blks = nvm_bb_tbl_fold(dev->parent, blks, nr_blks);
-	if (nr_blks < 0)
-		return -EIO;
-
-	return 0;
-}
-
-static void *pblk_bb_get_meta(struct pblk *pblk)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	u8 *meta;
-	int i, nr_blks, blk_per_lun;
-	int ret;
-
-	blk_per_lun = geo->num_chk * geo->pln_mode;
-	nr_blks = blk_per_lun * geo->all_luns;
-
-	meta = kmalloc(nr_blks, GFP_KERNEL);
-	if (!meta)
-		return ERR_PTR(-ENOMEM);
-
-	for (i = 0; i < geo->all_luns; i++) {
-		struct pblk_lun *rlun = &pblk->luns[i];
-		u8 *meta_pos = meta + i * blk_per_lun;
-
-		ret = pblk_bb_get_tbl(dev, rlun, meta_pos, blk_per_lun);
-		if (ret) {
-			kfree(meta);
-			return ERR_PTR(-EIO);
-		}
-	}
-
-	return meta;
-}
-
-static void *pblk_chunk_get_meta(struct pblk *pblk)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-
-	if (geo->version == NVM_OCSSD_SPEC_12)
-		return pblk_bb_get_meta(pblk);
-	else
-		return pblk_chunk_get_info(pblk);
-}
-
 static int pblk_luns_init(struct pblk *pblk)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
@@ -699,51 +638,7 @@ static void pblk_set_provision(struct pblk *pblk, long nr_free_blks)
 	atomic_set(&pblk->rl.free_user_blocks, nr_free_blks);
 }
 
-static int pblk_setup_line_meta_12(struct pblk *pblk, struct pblk_line *line,
-				   void *chunk_meta)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	struct pblk_line_meta *lm = &pblk->lm;
-	int i, chk_per_lun, nr_bad_chks = 0;
-
-	chk_per_lun = geo->num_chk * geo->pln_mode;
-
-	for (i = 0; i < lm->blk_per_line; i++) {
-		struct pblk_lun *rlun = &pblk->luns[i];
-		struct nvm_chk_meta *chunk;
-		int pos = pblk_ppa_to_pos(geo, rlun->bppa);
-		u8 *lun_bb_meta = chunk_meta + pos * chk_per_lun;
-
-		chunk = &line->chks[pos];
-
-		/*
-		 * In 1.2 spec. chunk state is not persisted by the device. Thus
-		 * some of the values are reset each time pblk is instantiated,
-		 * so we have to assume that the block is closed.
-		 */
-		if (lun_bb_meta[line->id] == NVM_BLK_T_FREE)
-			chunk->state =  NVM_CHK_ST_CLOSED;
-		else
-			chunk->state = NVM_CHK_ST_OFFLINE;
-
-		chunk->type = NVM_CHK_TP_W_SEQ;
-		chunk->wi = 0;
-		chunk->slba = -1;
-		chunk->cnlb = geo->clba;
-		chunk->wp = 0;
-
-		if (!(chunk->state & NVM_CHK_ST_OFFLINE))
-			continue;
-
-		set_bit(pos, line->blk_bitmap);
-		nr_bad_chks++;
-	}
-
-	return nr_bad_chks;
-}
-
-static int pblk_setup_line_meta_20(struct pblk *pblk, struct pblk_line *line,
+static int pblk_setup_line_meta_chk(struct pblk *pblk, struct pblk_line *line,
 				   struct nvm_chk_meta *meta)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
@@ -790,8 +685,6 @@ static int pblk_setup_line_meta_20(struct pblk *pblk, struct pblk_line *line,
 static long pblk_setup_line_meta(struct pblk *pblk, struct pblk_line *line,
 				 void *chunk_meta, int line_id)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
 	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
 	struct pblk_line_meta *lm = &pblk->lm;
 	long nr_bad_chks, chk_in_line;
@@ -804,10 +697,7 @@ static long pblk_setup_line_meta(struct pblk *pblk, struct pblk_line *line,
 	line->vsc = &l_mg->vsc_list[line_id];
 	spin_lock_init(&line->lock);
 
-	if (geo->version == NVM_OCSSD_SPEC_12)
-		nr_bad_chks = pblk_setup_line_meta_12(pblk, line, chunk_meta);
-	else
-		nr_bad_chks = pblk_setup_line_meta_20(pblk, line, chunk_meta);
+	nr_bad_chks = pblk_setup_line_meta_chk(pblk, line, chunk_meta);
 
 	chk_in_line = lm->blk_per_line - nr_bad_chks;
 	if (nr_bad_chks < 0 || nr_bad_chks > lm->blk_per_line ||
@@ -1058,7 +948,7 @@ static int pblk_lines_init(struct pblk *pblk)
 	if (ret)
 		goto fail_free_meta;
 
-	chunk_meta = pblk_chunk_get_meta(pblk);
+	chunk_meta = pblk_get_chunk_meta(pblk);
 	if (IS_ERR(chunk_meta)) {
 		ret = PTR_ERR(chunk_meta);
 		goto fail_free_luns;
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 48b3035df3c4..579b4ea9716c 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -774,7 +774,7 @@ void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write);
 int pblk_setup_w_rec_rq(struct pblk *pblk, struct nvm_rq *rqd,
 			struct pblk_c_ctx *c_ctx);
 void pblk_discard(struct pblk *pblk, struct bio *bio);
-struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk);
+struct nvm_chk_meta *pblk_get_chunk_meta(struct pblk *pblk);
 struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
 					      struct nvm_chk_meta *lp,
 					      struct ppa_addr ppa);
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 1e4f97538838..e42af7771fe5 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -567,8 +567,8 @@ static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas,
  * Expect the lba in device format
  */
 static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
-				 struct nvm_chk_meta *meta,
-				 sector_t slba, int nchks)
+				 sector_t slba, int nchks,
+				 struct nvm_chk_meta *meta)
 {
 	struct nvm_geo *geo = &ndev->geo;
 	struct nvme_ns *ns = ndev->q->queuedata;
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index f4a84694e5e2..0106984400bc 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -86,8 +86,8 @@ struct nvm_chk_meta;
 typedef int (nvm_id_fn)(struct nvm_dev *);
 typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, u8 *);
 typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct ppa_addr *, int, int);
-typedef int (nvm_get_chk_meta_fn)(struct nvm_dev *, struct nvm_chk_meta *,
-								sector_t, int);
+typedef int (nvm_get_chk_meta_fn)(struct nvm_dev *, sector_t, int,
+							struct nvm_chk_meta *);
 typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
 typedef int (nvm_submit_io_sync_fn)(struct nvm_dev *, struct nvm_rq *);
 typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *);
@@ -532,18 +532,13 @@ extern struct nvm_dev *nvm_alloc_dev(int);
 extern int nvm_register(struct nvm_dev *);
 extern void nvm_unregister(struct nvm_dev *);
 
-
-extern int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev,
-			      struct nvm_chk_meta *meta, struct ppa_addr ppa,
-			      int nchks);
-
-extern int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr *,
+extern int nvm_get_chunk_meta(struct nvm_tgt_dev *, struct ppa_addr,
+			      int, struct nvm_chk_meta *);
+extern int nvm_set_chunk_meta(struct nvm_tgt_dev *, struct ppa_addr *,
 			      int, int);
 extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *);
 extern int nvm_submit_io_sync(struct nvm_tgt_dev *, struct nvm_rq *);
 extern void nvm_end_io(struct nvm_rq *);
-extern int nvm_bb_tbl_fold(struct nvm_dev *, u8 *, int);
-extern int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr, u8 *);
 
 #else /* CONFIG_NVM */
 struct nvm_dev_ops;