From: Mikulas Patocka <mpatocka@redhat.com>
Date: Tue, 10 Nov 2020 12:45:13 +0000 (-0500)
Subject: dm writecache: fix the maximum number of arguments
X-Git-Tag: v5.9.14~34
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05b9eff050a5d12efa932ca2d7782abe866f8386;p=thirdparty%2Fkernel%2Fstable.git

dm writecache: fix the maximum number of arguments

commit 67aa3ec3dbc43d6e34401d9b2a40040ff7bb57af upstream.

Advance the maximum number of arguments to 16.
This fixes issue where certain operations, combined with table
configured args, exceed 10 arguments.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: 48debafe4f2f ("dm: add writecache target")
Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 1ea923af47c61..7d277de26b3a5 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -2041,7 +2041,7 @@ static int writecache_ctr(struct dm_target *ti, unsigned argc, char **argv)
 	struct wc_memory_superblock s;
 
 	static struct dm_arg _args[] = {
-		{0, 10, "Invalid number of feature args"},
+		{0, 16, "Invalid number of feature args"},
 	};
 
 	as.argc = argc;