Re: [PATCH 03/32] locking/lockdep: lockdep_set_no_check_recursion()

Peter Zijlstra
2023-05-09T19:32:01Z

On Tue, May 09, 2023 at 12:56:28PM -0400, Kent Overstreet wrote:
> This adds a method to tell lockdep not to check lock ordering within a
> lock class - but to still check lock ordering w.r.t. other lock types.
>
> This is for bcachefs, where for btree node locks we have our own
> deadlock avoidance strategy w.r.t. other btree node locks (cycle
> detection), but we still want lockdep to check lock ordering w.r.t.
> other lock types.
>

ISTR you had a much nicer version of this where you gave a custom order
function -- what happend to that?