pack: move pack-closing functions

The function close_pack_fd() needs to be temporarily made global. Its
scope will be restored to static in a subsequent commit.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: jonathantanmy

builtin/am.c

@@ -31,6 +31,7 @@
 #include "mailinfo.h"
 #include "apply.h"
 #include "string-list.h"
+#include "packfile.h"
 
 /**
  * Returns 1 if the file is empty or does not exist, 0 otherwise.

builtin/clone.c

@@ -25,6 +25,7 @@
 #include "remote.h"
 #include "run-command.h"
 #include "connected.h"
+#include "packfile.h"
 
 /*
  * Overall FIXMEs:

builtin/fetch.c

@@ -17,6 +17,7 @@
 #include "connected.h"
 #include "argv-array.h"
 #include "utf8.h"
+#include "packfile.h"
 
 static const char * const builtin_fetch_usage[] = {
 	N_("git fetch [<options>] [<repository> [<refspec>...]]"),

builtin/merge.c

@@ -32,6 +32,7 @@
 #include "gpg-interface.h"
 #include "sequencer.h"
 #include "string-list.h"
+#include "packfile.h"
 
 #define DEFAULT_TWOHEAD (1<<0)
 #define DEFAULT_OCTOPUS (1<<1)

builtin/receive-pack.c

@@ -23,6 +23,7 @@
 #include "fsck.h"
 #include "tmp-objdir.h"
 #include "oidset.h"
+#include "packfile.h"
 
 static const char * const receive_pack_usage[] = {
 	N_("git receive-pack <git-dir>"),

cache.h

@@ -1639,15 +1639,7 @@ extern int odb_mkstemp(struct strbuf *template, const char *pattern);
  */
 extern int odb_pack_keep(const char *name);
 
-/*
- * munmap the index file for the specified packfile (if it is
- * currently mmapped).
- */
-extern void close_pack_index(struct packed_git *);
-
 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
-extern void close_pack_windows(struct packed_git *);
-extern void close_all_packs(void);
 extern void unuse_pack(struct pack_window **);
 extern void clear_delta_base_cache(void);
 extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local);

packfile.c

@@ -257,3 +257,57 @@ void release_pack_memory(size_t need)
 	while (need >= (cur - pack_mapped) && unuse_one_window(NULL))
 		; /* nothing */
 }
+
+void close_pack_windows(struct packed_git *p)
+{
+	while (p->windows) {
+		struct pack_window *w = p->windows;
+
+		if (w->inuse_cnt)
+			die("pack '%s' still has open windows to it",
+			    p->pack_name);
+		munmap(w->base, w->len);
+		pack_mapped -= w->len;
+		pack_open_windows--;
+		p->windows = w->next;
+		free(w);
+	}
+}
+
+int close_pack_fd(struct packed_git *p)
+{
+	if (p->pack_fd < 0)
+		return 0;
+
+	close(p->pack_fd);
+	pack_open_fds--;
+	p->pack_fd = -1;
+
+	return 1;
+}
+
+void close_pack_index(struct packed_git *p)
+{
+	if (p->index_data) {
+		munmap((void *)p->index_data, p->index_size);
+		p->index_data = NULL;
+	}
+}
+
+static void close_pack(struct packed_git *p)
+{
+	close_pack_windows(p);
+	close_pack_fd(p);
+	close_pack_index(p);
+}
+
+void close_all_packs(void)
+{
+	struct packed_git *p;
+
+	for (p = packed_git; p; p = p->next)
+		if (p->do_not_close)
+			die("BUG: want to close pack marked 'do-not-close'");
+		else
+			close_pack(p);
+}

packfile.h

@@ -43,6 +43,17 @@ extern void pack_report(void);
  */
 extern int open_pack_index(struct packed_git *);
 
+/*
+ * munmap the index file for the specified packfile (if it is
+ * currently mmapped).
+ */
+extern void close_pack_index(struct packed_git *);
+
+extern void close_pack_windows(struct packed_git *);
+extern void close_all_packs(void);
+
+extern int close_pack_fd(struct packed_git *);
+
 extern int unuse_one_window(struct packed_git *current);
 
 extern void release_pack_memory(size_t);

sha1_file.c

@@ -719,53 +719,6 @@ void *xmmap(void *start, size_t length,
 	return ret;
 }
 
-void close_pack_windows(struct packed_git *p)
-{
-	while (p->windows) {
-		struct pack_window *w = p->windows;
-
-		if (w->inuse_cnt)
-			die("pack '%s' still has open windows to it",
-			    p->pack_name);
-		munmap(w->base, w->len);
-		pack_mapped -= w->len;
-		pack_open_windows--;
-		p->windows = w->next;
-		free(w);
-	}
-}
-
-static int close_pack_fd(struct packed_git *p)
-{
-	if (p->pack_fd < 0)
-		return 0;
-
-	close(p->pack_fd);
-	pack_open_fds--;
-	p->pack_fd = -1;
-
-	return 1;
-}
-
-static void close_pack(struct packed_git *p)
-{
-	close_pack_windows(p);
-	close_pack_fd(p);
-	close_pack_index(p);
-}
-
-void close_all_packs(void)
-{
-	struct packed_git *p;
-
-	for (p = packed_git; p; p = p->next)
-		if (p->do_not_close)
-			die("BUG: want to close pack marked 'do-not-close'");
-		else
-			close_pack(p);
-}
-
-
 /*
  * The LRU pack is the one with the oldest MRU window, preferring packs
  * with no used windows, or the oldest mtime if it has no windows allocated.
@@ -848,14 +801,6 @@ void unuse_pack(struct pack_window **w_cursor)
 	}
 }
 
-void close_pack_index(struct packed_git *p)
-{
-	if (p->index_data) {
-		munmap((void *)p->index_data, p->index_size);
-		p->index_data = NULL;
-	}
-}
-
 static unsigned int get_max_fd_limit(void)
 {
 #ifdef RLIMIT_NOFILE