X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/5e109ae2b94f5dcaddb19da360507f73078e2d1c..8bf8c9c62a53012de2847c07b38460d57824c559:/sdk/go/arvados/fs_base.go

diff --git a/sdk/go/arvados/fs_base.go b/sdk/go/arvados/fs_base.go
index 359e6b67e6..d06aba3695 100644
--- a/sdk/go/arvados/fs_base.go
+++ b/sdk/go/arvados/fs_base.go
@@ -58,6 +58,9 @@ type FileSystem interface {
 	// while locking multiple inodes.
 	locker() sync.Locker
 
+	// throttle for limiting concurrent background writers
+	throttle() *throttle
+
 	// create a new node with nil parent.
 	newNode(name string, perm os.FileMode, modTime time.Time) (node inode, err error)
 
@@ -300,12 +303,17 @@ type fileSystem struct {
 	root inode
 	fsBackend
 	mutex sync.Mutex
+	thr   *throttle
 }
 
 func (fs *fileSystem) rootnode() inode {
 	return fs.root
 }
 
+func (fs *fileSystem) throttle() *throttle {
+	return fs.thr
+}
+
 func (fs *fileSystem) locker() sync.Locker {
 	return &fs.mutex
 }