name the storage wrapper to make sure that we don't apply the wrapper multiple times

lib/private/files/filesystem.php

@@ -168,8 +168,8 @@ class Filesystem {
 	/**
 	 * @param callable $wrapper
 	 */
-	public static function addStorageWrapper($wrapper) {
-		self::getLoader()->addStorageWrapper($wrapper);
+	public static function addStorageWrapper($wrapperName, $wrapper) {
+		self::getLoader()->addStorageWrapper($wrapperName, $wrapper);
 
 		$mounts = self::getMountManager()->getAll();
 		foreach ($mounts as $mount) {

lib/private/files/storage/loader.php

@@ -21,8 +21,8 @@ class Loader {
 	 *
 	 * @param callable $callback
 	 */
-	public function addStorageWrapper($callback) {
-		$this->storageWrappers[] = $callback;
+	public function addStorageWrapper($wrapperName, $callback) {
+		$this->storageWrappers[$wrapperName] = $callback;
 	}
 
 	/**

lib/private/util.php

@@ -53,7 +53,7 @@ class OC_Util {
 
 		//if we aren't logged in, there is no use to set up the filesystem
 		if( $user != "" ) {
-			\OC\Files\Filesystem::addStorageWrapper(function($mountPoint, $storage){
+			\OC\Files\Filesystem::addStorageWrapper('oc_quota', function($mountPoint, $storage){
 				// set up quota for home storages, even for other users
 				// which can happen when using sharing
 
@@ -72,7 +72,7 @@ class OC_Util {
 			});
 
 			// Set up flock
-			\OC\Files\Filesystem::addStorageWrapper(function($mountPoint, /** @var \OC\Files\Storage\Storage|null $storage */ $storage){
+			\OC\Files\Filesystem::addStorageWrapper('oc_flock', function($mountPoint, /** @var \OC\Files\Storage\Storage|null $storage */ $storage){
 				// lock files on all local storage
 				if ($storage instanceof \OC\Files\Storage\Storage && $storage->isLocal()) {
 					return new \OC\Files\Storage\Wrapper\LockingWrapper(array('storage' => $storage));