linux-kernel - [PATCH 19/25] lightnvm: pblk: ignore high ecc errors on recovery

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Message-Id: <20171220172205.26464-20-m@bjorling.me>
Date:   Wed, 20 Dec 2017 18:21:59 +0100
From:   Matias Bjørling <m@...rling.me>
To:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Javier González <javier@...xlabs.com>,
        Matias Bjørling <m@...rling.me>
Subject: [PATCH 19/25] lightnvm: pblk: ignore high ecc errors on recovery

From: Javier González <javier@...xlabs.com>

On recovery, do not stop L2P recovery if reads report high ECC error
as the data is still available.

Signed-off-by: Javier González <javier@...xlabs.com>
Signed-off-by: Matias Bjørling <m@...rling.me>
---
 drivers/lightnvm/pblk-recovery.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index fd38036..1d5e961 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -288,7 +288,7 @@ static int pblk_recov_read_oob(struct pblk *pblk, struct pblk_line *line,
 	/* At this point, the read should not fail. If it does, it is a problem
 	 * we cannot recover from here. Need FTL log.
 	 */
-	if (rqd->error) {
+	if (rqd->error && rqd->error != NVM_RSP_WARN_HIGHECC) {
 		pr_err("pblk: L2P recovery failed (%d)\n", rqd->error);
 		return -EINTR;
 	}
-- 
2.9.3