linux-kernel - [PATCH 5.9 43/75] dm writecache: advance the number of arguments when reporting max

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Date:   Thu, 10 Dec 2020 15:27:08 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Mikulas Patocka <mpatocka@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>
Subject: [PATCH 5.9 43/75] dm writecache: advance the number of arguments when reporting max_age

From: Mikulas Patocka <mpatocka@...hat.com>

commit e5d41cbca1b2036362c9e29d705d3a175a01eff8 upstream.

When reporting the "max_age" value the number of arguments must
advance by two.

Signed-off-by: Mikulas Patocka <mpatocka@...hat.com>
Fixes: 3923d4854e18 ("dm writecache: implement gradual cleanup")
Cc: stable@...r.kernel.org # v5.7+
Signed-off-by: Mike Snitzer <snitzer@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/md/dm-writecache.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -2479,6 +2479,8 @@ static void writecache_status(struct dm_
 			extra_args += 2;
 		if (wc->autocommit_time_set)
 			extra_args += 2;
+		if (wc->max_age != MAX_AGE_UNSPECIFIED)
+			extra_args += 2;
 		if (wc->cleaner)
 			extra_args++;
 		if (wc->writeback_fua_set)