> What if some app/script is using gc_mode....it breaks its use.Similar words, you said before.https://lore.kernel.org/lkml/cd6d15e3-b692-d3c1-0f01-33e632f5f94c@kernel.org/The instructions for these nodes are in the Documentation/ABI/testing/ directory,not the Documentation/ABI/stable directory.So, we can still remove unnecessary nodes, right?Thx,Yangtao