Merge pull request #653 from harshavardhana/pr_out_hold_lock_on_getglobalstatekey_fixes_652

Hold lock on GetGlobalStateKey() - fixes #652

pkg/iodine/iodine.go

@@ -87,7 +87,9 @@ func GetGlobalState() map[string]string {
 
 // GetGlobalStateKey - get value for key from globalState struct
 func GetGlobalStateKey(k string) string {
+	globalState.RLock()
 	result, ok := globalState.m[k]
+	globalState.RUnlock()
 	if !ok {
 		return ""
 	}

pkg/storage/drivers/fs/fs_bucket.go

@@ -192,7 +192,7 @@ func (fs *fsDriver) ListObjects(bucket string, resources drivers.BucketResources
 			break
 		}
 		if name > resources.Marker {
-			metadata, resources, err = fs.filter(bucket, name, p.files[name], resources)
+			metadata, resources, err = fs.filterObjects(bucket, name, p.files[name], resources)
 			if err != nil {
 				return []drivers.ObjectMetadata{}, resources, iodine.New(err, nil)
 			}

pkg/storage/drivers/fs/fs_filter.go

@@ -24,7 +24,7 @@ import (
 	"github.com/minio/minio/pkg/storage/drivers"
 )
 
-func (fs *fsDriver) filter(bucket, name string, file os.FileInfo, resources drivers.BucketResourcesMetadata) (drivers.ObjectMetadata, drivers.BucketResourcesMetadata, error) {
+func (fs *fsDriver) filterObjects(bucket, name string, file os.FileInfo, resources drivers.BucketResourcesMetadata) (drivers.ObjectMetadata, drivers.BucketResourcesMetadata, error) {
 	var err error
 	var metadata drivers.ObjectMetadata