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Merge branch 'tb/cruft-packs'

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A mechanism to pack unreachable objects into a "cruft pack",
instead of ejecting them into loose form to be reclaimed later, has
been introduced.

* tb/cruft-packs:
  sha1-file.c: don't freshen cruft packs
  builtin/gc.c: conditionally avoid pruning objects via loose
  builtin/repack.c: add cruft packs to MIDX during geometric repack
  builtin/repack.c: use named flags for existing_packs
  builtin/repack.c: allow configuring cruft pack generation
  builtin/repack.c: support generating a cruft pack
  builtin/pack-objects.c: --cruft with expiration
  reachable: report precise timestamps from objects in cruft packs
  reachable: add options to add_unseen_recent_objects_to_traversal
  builtin/pack-objects.c: --cruft without expiration
  builtin/pack-objects.c: return from create_object_entry()
  t/helper: add 'pack-mtimes' test-tool
  pack-mtimes: support writing pack .mtimes files
  chunk-format.h: extract oid_version()
  pack-write: pass 'struct packing_data' to 'stage_tmp_packfiles'
  pack-mtimes: support reading .mtimes files
  Documentation/technical: add cruft-packs.txt
This commit is contained in:
Junio C Hamano
2022-06-03 14:30:37 -07:00
parent 37d4ae58ef a613164257
commit a50036da1a
32 changed files with 1853 additions and 102 deletions
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12
object-store.h
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@ -115,12 +115,20 @@ struct packed_git {
freshened:1,
do_not_close:1,
pack_promisor:1,
multi_pack_index:1;
multi_pack_index:1,
is_cruft:1;
unsigned char hash[GIT_MAX_RAWSZ];
struct revindex_entry *revindex;
const uint32_t *revindex_data;
const uint32_t *revindex_map;
size_t revindex_size;
/*
* mtimes_map points at the beginning of the memory mapped region of
* this pack's corresponding .mtimes file, and mtimes_size is the size
* of that .mtimes file
*/
const uint32_t *mtimes_map;
size_t mtimes_size;
/* something like ".git/objects/pack/xxxxx.pack" */
char pack_name[FLEX_ARRAY]; /* more */
};
@ -327,6 +335,8 @@ int repo_has_object_file_with_flags(struct repository *r,
*/
int has_loose_object_nonlocal(const struct object_id *);
int has_loose_object(const struct object_id *);
/**
* format_object_header() is a thin wrapper around s xsnprintf() that
* writes the initial "<type> <obj-len>" part of the loose object