hidden: remove _consistencyblockers() Roughly speaking, we currently do this to reveal hidden ancestors of visible revisions: 1. Iterate over all visible non-public revisions and see if they have hidden parents 2. For each revision found in step (1) walk the chain of hidden commits and reveal it We can simplify that by skipping step (1) and doing step (2) from all visible non-public revisions instead. This doesn't seem to have much impact on "perfvolatilesets". Before: ! obsolete ! wall 0.004616 comb 0.000000 user 0.000000 sys 0.000000 (best of 570) ! visible ! wall 0.008235 comb 0.010000 user 0.010000 sys 0.000000 (best of 326) After: ! obsolete ! wall 0.004727 comb 0.010000 user 0.010000 sys 0.000000 (best of 543) ! visible ! wall 0.008371 comb 0.000000 user 0.000000 sys 0.000000 (best of 324)