linux-kernel - [GIT PULL 12/26] lightnvm: pblk: set propper line as data

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Message-Id: <20190504183811.18725-13-mb@lightnvm.io>
Date:   Sat,  4 May 2019 20:37:57 +0200
From:   Matias Bjørling <mb@...htnvm.io>
To:     axboe@...com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Marcin Dziegielewski <marcin.dziegielewski@...el.com>,
        Matias Bjørling <mb@...htnvm.io>
Subject: [GIT PULL 12/26] lightnvm: pblk: set propper line as data_line after gc

From: Marcin Dziegielewski <marcin.dziegielewski@...el.com>

In current implementation of l2p recovery, when we are after gc and we
have open line, we are not setting current data line properly (we set
last line from the device instead of last line ordered by seq_nr) and
in consequence, kernel panic and data corruption.

Signed-off-by: Marcin Dziegielewski <marcin.dziegielewski@...el.com>
Reviewed-by: Javier González <javier@...igon.com>
Signed-off-by: Matias Bjørling <mb@...htnvm.io>
---
 drivers/lightnvm/pblk-recovery.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index 83b467b5edc7..017874e03253 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -844,6 +844,7 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
 		spin_unlock(&l_mg->free_lock);
 	} else {
 		spin_lock(&l_mg->free_lock);
+		l_mg->data_line = data_line;
 		/* Allocate next line for preparation */
 		l_mg->data_next = pblk_line_get(pblk);
 		if (l_mg->data_next) {
-- 
2.19.1