> So when you remove an element from the list, how do you make sure both lists are updated?
The remove_from_list() function has to be either payload-specific, or it needs a function pointer parameter which is called to handle the payload-specific unlinking. Assuming the lists are doubly-linked, which they typically are in the Linux kernel.
This is one of the purposes of doubly-linking the nodes.
Say your struct is in two lists. To remove it from both, first follow the next/prev pointers of the first list embedded struct to remove it from the first list, and then do the same thing with the second list embedded struct to remove it from the second list.
