Re: [PATCH 0/6] pack-bitmap: various pack-bitmap-write cleanups

> This topic was born out of tb/pseudo-merge-bitmaps, which has a few
> quality-of-life improvements in the pack-bitmap machinery.
> 
> The main changes are to remove the static 'struct bitmap_writer', drop
> one unused fields, and start using another unused one (see "move
> commit_positions into commit_pos fields").
> 
> There are other smaller changes, too, like cleaning up the flag
> allocation table in object.h, as well as introducing a new
> bitmap_writer_free() function.
> 
> The next round of tb/pseudo-merge-bitmaps will be based on this branch.
> 
> Thanks in advance for your review!