From: Nikos Tsironis <ntsironis@arrikto.com>
Date: Fri, 22 Jan 2021 15:25:55 +0000 (+0200)
Subject: dm era: Use correct value size in equality function of writeset tree
X-Git-Tag: v4.4.259~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f155887911758fff1d392af40e804cb039ca459;p=thirdparty%2Fkernel%2Fstable.git

dm era: Use correct value size in equality function of writeset tree

commit 64f2d15afe7b336aafebdcd14cc835ecf856df4b upstream.

Fix the writeset tree equality test function to use the right value size
when comparing two btree values.

Fixes: eec40579d84873 ("dm: add era target")
Cc: stable@vger.kernel.org # v3.15+
Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com>
Reviewed-by: Ming-Hung Tsai <mtsai@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index a499d6f0e7b9b..1582d5298ae9c 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -389,7 +389,7 @@ static void ws_dec(void *context, const void *value)
 
 static int ws_eq(void *context, const void *value1, const void *value2)
 {
-	return !memcmp(value1, value2, sizeof(struct writeset_metadata));
+	return !memcmp(value1, value2, sizeof(struct writeset_disk));
 }
 
 /*----------------------------------------------------------------*/