On Fri, Dec 20, 2024 at 01:54:18PM +1100, NeilBrown wrote: > Not all calling code has been converted. Some callers outside of > fs/namei.c still take an exclusive lock with i_rw_sem. Some might never > be changed. > > As yet this has only been lightly tested as I haven't add foo_shared > operations to any filesystem yet. It's still fundamentally broken. You assume that shared lock on parent is enough to prevent the parent/name changes of children. That assumption is simply not true.
