zhack: Fix 'feature ref' comparison check

Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #3878

diff --git a/cmd/zhack/zhack.c b/cmd/zhack/zhack.c
index a7da371c8a846f2c95f20bc99eb571f200d8c84d..eedd17c30710554c885f348bf101bad08f0d041e 100644 (file)
--- a/cmd/zhack/zhack.c
+++ b/cmd/zhack/zhack.c
@@ -464,7 +464,7 @@ zhack_do_feature_ref(int argc, char **argv)
        if (decr) {
                uint64_t count;
                if (feature_get_refcount_from_disk(spa, &feature,
-                   &count) == 0 && count != 0) {
+                   &count) == 0 && count == 0) {
                        fatal(spa, FTAG, "feature refcount already 0: %s",
                            feature.fi_guid);
                }