On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote: > In preparation for adding a mmap_assert_locked() check in > __get_user_pages(), teach the mmap_assert_*locked() helpers that it's fine > to operate on an mm without locking in the middle of execve() as long as > it hasn't been installed on a process yet. I'm happy to see lockdep being added here, but can you elaborate on why add this mmap_locked_required instead of obtaining the lock in the execv path? Jason
