packfile: split up responsibilities of `reprepare_packed_git()`

In `reprepare_packed_git()` we perform a couple of operations:

  - We reload alternate object directories.

  - We clear the loose object cache.

  - We reprepare packfiles.

While the logic is hosted in "packfile.c", it clearly reaches into other
subsystems that aren't related to packfiles.

Split up the responsibility and introduce `odb_reprepare()` which now
becomes responsible for repreparing the whole object database. The
existing `reprepare_packed_git()` function is refactored accordingly and
only cares about reloading the packfile store now.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/packfile.h b/packfile.h
index bf66211986..a85ff607fe 100644
--- a/packfile.h
+++ b/packfile.h
@@ -112,6 +112,14 @@ void packfile_store_free(struct packfile_store *store);
  */
 void packfile_store_close(struct packfile_store *store);
 
+/*
+ * Clear the packfile caches and try to look up any new packfiles that have
+ * appeared since last preparing the packfiles store.
+ *
+ * This function must be called under the `odb_read_lock()`.
+ */
+void packfile_store_reprepare(struct packfile_store *store);
+
 struct pack_window {
 	struct pack_window *next;
 	unsigned char *base;
@@ -188,7 +196,6 @@ int for_each_packed_object(struct repository *repo, each_packed_object_fn cb,
 #define PACKDIR_FILE_GARBAGE 4
 extern void (*report_garbage)(unsigned seen_bits, const char *path);
 
-void reprepare_packed_git(struct repository *r);
 void install_packed_git(struct repository *r, struct packed_git *pack);
 
 struct packed_git *get_packed_git(struct repository *r);