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 a499d6f0e7b9bddfed7159cf509ae2982bb82e0b..1582d5298ae9c1033476fa7d40f6e4cf51503997 100644 (file)
--- 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));
 }
 
 /*----------------------------------------------------------------*/