diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index fd24f34..6bf85b7 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -317,6 +317,12 @@
 	the VM is trying to reclaim under GFP_NOFS conditions, hence this
 	method does not need to handle that situation itself.
 
+	Implementations must include conditional reschedule calls inside any
+	scanning loop that is done. This allows the VFS to determine
+	appropriate scan batch sizes without having to worry about whether
+	implementations will cause holdoff problems due to large scan batch
+	sizes.
+
 Whoever sets up the inode is responsible for filling in the "i_op" field. This
 is a pointer to a "struct inode_operations" which describes the methods that
 can be performed on individual inodes.