Re: [PATCH/RFC v2 0/16] Introduce index file format version 5

These mails are about cosmetics only. But I think it helps maintenance in long term. I notice in your series we have many functions with _v2 and _v5 mixed together. Worse, some functions that are _v2 only are not suffixed with _v2. I still think separating v2/v5 changes is a good idea. So I played a bit, see how it might become.

The next two emails demonstrate how we take v2-specific code out to read-cache-v2.c, then add v5 code in the next patch. Notice there's very little change in read-cache.c in the second patch. I wanted to see how v5 changes affects v2 users and the second patch shows it.

I'm not happy with the first patch either. Ideally it should consist of code move only, no other changes. All updates in read_index_from and the introduction of struct index_ops should happen in patches before that.

Then of course you need to split the second patch into several logical patches again. We can drop _v5 suffix in read-cache-v5.c (I haven't done that). When we add partial read/write for v5, we can add more func pointers to index_ops and implement them in v2 (probably as no-op or assertion)

There are still some v5 bits in the first patch. This series is not meant to be used anyway, so it does not matter much. Hope it helps.

Nguyễn Thái Ngọc Duy (2):
  Move index v2 specific code out of read-cache
  Add index-v5

 Makefile        |    3 +
 cache.h         |   92 ++++-
 read-cache-v2.c |  570 +++++++++++++++++++++++++++
 read-cache-v5.c | 1170 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 read-cache.c    |  618 +++---------------------------
 read-cache.h    |   54 +++
 6 files changed, 1932 insertions(+), 575 deletions(-)
 create mode 100644 read-cache-v2.c
 create mode 100644 read-cache-v5.c
 create mode 100644 read-cache.h