Fix up Darwin swap metrics

* Add a changelog entry.
* Remove redundant swap free metric.

Signed-off-by: Ben Kochie <superq@gmail.com>

2 files changed, 1 insertions, 1 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e04c9ad..188906a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@
 * [FEATURE] Add new softnet collector #1576
 * [FEATURE] Add RAPL collector #1523
 * [FEATURE] Add Btrfs collector #1512
+* [FEATURE] Add swap usage on darwin #1508
 * [ENHANCEMENT] Collect InfiniBand port state and physical state #1357
 * [ENHANCEMENT] Include additional XFS runtime statistics. #1423
 * [ENHANCEMENT] Report non-fatal collection errors in the exporter metric. #1439
diff --git a/collector/meminfo_darwin.go b/collector/meminfo_darwin.go
index 87f3e5a..da443cd 100644
--- a/collector/meminfo_darwin.go
+++ b/collector/meminfo_darwin.go
@@ -69,7 +69,6 @@ func (c *meminfoCollector) getMemInfo() (map[string]float64, error) {
                 "swapped_out_bytes_total": ps * float64(vmstat.pageouts),
                 "total_bytes":             float64(total),
                 "swap_used_bytes":         float64(swap.xsu_used),
-                "swap_free_bytes":         float64(swap.xsu_avail),
                 "swap_total_bytes":        float64(swap.xsu_total),
         }, nil
 }