From 06065189d768e5b33cb4798403db34b12cb60ef7 Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind@owncloud.com>
Date: Mon, 10 Aug 2015 14:13:40 +0200
Subject: [PATCH] cleanup empty locks

---
 lib/private/lock/dblockingprovider.php | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/private/lock/dblockingprovider.php b/lib/private/lock/dblockingprovider.php
index 60d516e17c..5480a6e53a 100644
--- a/lib/private/lock/dblockingprovider.php
+++ b/lib/private/lock/dblockingprovider.php
@@ -105,6 +105,7 @@ class DBLockingProvider extends AbstractLockingProvider {
 				[$path]
 			);
 		}
+
 		$this->markRelease($path, $type);
 	}
 
@@ -133,4 +134,17 @@ class DBLockingProvider extends AbstractLockingProvider {
 		}
 		$this->markChange($path, $targetType);
 	}
+
+	/**
+	 * cleanup empty locks
+	 */
+	public function cleanEmptyLocks() {
+		$this->connection->executeUpdate(
+			'DELETE FROM `*PREFIX*file_locks` WHERE `lock` = 0'
+		);
+	}
+
+	public function __destruct() {
+		$this->cleanEmptyLocks();
+	}
 }