We need to adjust mids to ignore orphans during dir traversal, but we
shouldn't also adjust the dir position. In theory it shouldn't matter if
we use adjusted/non-adjusted dir positions, but it becomes a problem if
intermediate writes cause those orphans to be cleaned up. Now all your
dir positions are wrong.
Not entirely sure why this only started to fail with the bmap. I'm
guessing it's just due to the additional gstate causing the mdirs to
split differently.
Code changes minimal:
code stack ctx
before: 36920 2368 684
after: 36912 (-0.0%) 2368 (+0.0%) 684 (+0.0%)
Tangential, but toss this on the pile of problems with dir positions.
I'm increasingly convinced we should just remove the concept if we can
get away with it.
Christopher Haster
047fb83b62