linux-kernel - [GIT PULL 10/10] lightnvm: pblk: assume that chunks are closed on 1.2 devices

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Message-Id: <20180713084845.19511-11-mb@lightnvm.io>
Date:   Fri, 13 Jul 2018 10:48:45 +0200
From:   Matias Bjørling <mb@...htnvm.io>
To:     axboe@...com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        bart.vanassche@....com, hans.holmberg@...xlabs.com,
        javier@...xlabs.com, hlitz@...c.edu, igor.j.konopko@...el.com,
        marcin.dziegielewski@...el.com,
        Matias Bjørling <mb@...htnvm.io>
Subject: [GIT PULL 10/10] lightnvm: pblk: assume that chunks are closed on 1.2 devices

From: Hans Holmberg <hans.holmberg@...xlabs.com>

We can't know if a block is closed or not on 1.2 devices, so assume
closed state to make sure that blocks are erased before writing.

Fixes: 32ef9412c114 ("lightnvm: pblk: implement get log report chunk")
Signed-off-by: Hans Holmberg <hans.holmberg@...xlabs.com>
Signed-off-by: Matias Bjørling <mb@...htnvm.io>
---
 drivers/lightnvm/pblk-init.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index d023ea6116bc..537e98f2b24a 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -719,10 +719,11 @@ static int pblk_setup_line_meta_12(struct pblk *pblk, struct pblk_line *line,
 
 		/*
 		 * In 1.2 spec. chunk state is not persisted by the device. Thus
-		 * some of the values are reset each time pblk is instantiated.
+		 * 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_FREE;
+			chunk->state =  NVM_CHK_ST_CLOSED;
 		else
 			chunk->state = NVM_CHK_ST_OFFLINE;
 
-- 
2.11.0