linux-kernel - [PATCH 6/7] lightnvm: unconverted ppa returned in get_bb

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Message-Id: <1448725768-11992-7-git-send-email-m@bjorling.me>
Date:	Sat, 28 Nov 2015 16:49:27 +0100
From:	Matias Bjørling <m@...rling.me>
To:	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	axboe@...com
Cc:	hch@...radead.org, keith.busch@...el.com,
	sudipm.mukherjee@...il.com, ww.tao0320@...il.com,
	Matias Bjørling <m@...rling.me>
Subject: [PATCH 6/7] lightnvm: unconverted ppa returned in get_bb_tbl

The get_bb_tbl function takes ppa as a generic address, which is
converted to the ppa device address within the device driver. When
the update_bbtbl callback is called from get_bb_tbl, the device
specific ppa is used, instead of the generic ppa.

Make sure to pass the generic ppa.

Signed-off-by: Matias Bjørling <m@...rling.me>
---
 drivers/lightnvm/gennvm.c    | 3 +--
 drivers/nvme/host/lightnvm.c | 4 +++-
 include/linux/lightnvm.h     | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 3969a98..35dde84 100644
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -75,7 +75,6 @@ static int gennvm_block_bb(struct ppa_addr ppa, int nr_blocks, u8 *blks,
 	struct nvm_block *blk;
 	int i;
 
-	ppa = dev_to_generic_addr(gn->dev, ppa);
 	lun = &gn->luns[(dev->nr_luns * ppa.g.ch) + ppa.g.lun];
 
 	for (i = 0; i < nr_blocks; i++) {
@@ -187,7 +186,7 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
 			ppa.g.lun = lun->vlun.id;
 			ppa = generic_to_dev_addr(dev, ppa);
 
-			ret = dev->ops->get_bb_tbl(dev->q, ppa,
+			ret = dev->ops->get_bb_tbl(dev, ppa,
 						dev->blks_per_lun,
 						gennvm_block_bb, gn);
 			if (ret)
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index b9e5cc7..06c3364 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -355,10 +355,11 @@ out:
 	return ret;
 }
 
-static int nvme_nvm_get_bb_tbl(struct request_queue *q, struct ppa_addr ppa,
+static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
 				int nr_blocks, nvm_bb_update_fn *update_bbtbl,
 				void *priv)
 {
+	struct request_queue *q = nvmdev->q;
 	struct nvme_ns *ns = q->queuedata;
 	struct nvme_dev *dev = ns->dev;
 	struct nvme_nvm_command c = {};
@@ -402,6 +403,7 @@ static int nvme_nvm_get_bb_tbl(struct request_queue *q, struct ppa_addr ppa,
 		goto out;
 	}
 
+	ppa = dev_to_generic_addr(nvmdev, ppa);
 	ret = update_bbtbl(ppa, nr_blocks, bb_tbl->blk, priv);
 	if (ret) {
 		ret = -EINTR;
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 3db5552..c6916ae 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -179,7 +179,7 @@ typedef int (nvm_bb_update_fn)(struct ppa_addr, int, u8 *, void *);
 typedef int (nvm_id_fn)(struct request_queue *, struct nvm_id *);
 typedef int (nvm_get_l2p_tbl_fn)(struct request_queue *, u64, u32,
 				nvm_l2p_update_fn *, void *);
-typedef int (nvm_op_bb_tbl_fn)(struct request_queue *, struct ppa_addr, int,
+typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, int,
 				nvm_bb_update_fn *, void *);
 typedef int (nvm_op_set_bb_fn)(struct request_queue *, struct nvm_rq *, int);
 typedef int (nvm_submit_io_fn)(struct request_queue *, struct nvm_rq *);
-- 
2.1.4

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