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pack: make packed_git_mru global a value instead of a pointer

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The MRU cache that keeps track of recently used packs is represented
using two global variables:

	struct mru packed_git_mru_storage;
	struct mru *packed_git_mru = &packed_git_mru_storage;

Callers never assign to the packed_git_mru pointer, though, so we can
simplify by eliminating it and using &packed_git_mru_storage (renamed
to &packed_git_mru) directly.  This variable is only used by the
packfile subsystem, making this a relatively uninvasive change (and
any new unadapted callers would trigger a compile error).

Noticed while moving these globals to the object_store struct.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder
2017-09-12 10:28:39 -07:00
committed by Junio C Hamano
parent 6867272d5b
commit 607bd8315c
3 changed files with 9 additions and 11 deletions
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4
cache.h
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@ -4,6 +4,7 @@
#include "git-compat-util.h"
#include "strbuf.h"
#include "hashmap.h"
#include "mru.h"
#include "advice.h"
#include "gettext.h"
#include "convert.h"
@ -1589,8 +1590,7 @@ extern struct packed_git {
* A most-recently-used ordered version of the packed_git list, which can
* be iterated instead of packed_git (and marked via mru_mark).
*/
struct mru;
extern struct mru *packed_git_mru;
extern struct mru packed_git_mru;
struct pack_entry {
off_t offset;