preload-index.h: move declarations for preload-index.c from elsewhere

We already have a preload-index.c file; move the declarations for the
functions in that file into a new preload-index.h.  These were
previously split between cache.h and repository.h.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

add-interactive.c

@@ -5,6 +5,7 @@
 #include "diffcore.h"
 #include "gettext.h"
 #include "hex.h"
+#include "preload-index.h"
 #include "revision.h"
 #include "refs.h"
 #include "string-list.h"

builtin/add.c

@@ -17,6 +17,7 @@
 #include "cache-tree.h"
 #include "run-command.h"
 #include "parse-options.h"
+#include "preload-index.h"
 #include "diff.h"
 #include "diffcore.h"
 #include "revision.h"

builtin/am.c

@@ -29,6 +29,7 @@
 #include "unpack-trees.h"
 #include "branch.h"
 #include "object-name.h"
+#include "preload-index.h"
 #include "sequencer.h"
 #include "revision.h"
 #include "merge-recursive.h"

builtin/checkout.c

@@ -20,6 +20,7 @@
 #include "object-name.h"
 #include "object-store.h"
 #include "parse-options.h"
+#include "preload-index.h"
 #include "refs.h"
 #include "remote.h"
 #include "resolve-undo.h"

builtin/commit.c

@@ -30,6 +30,7 @@
 #include "utf8.h"
 #include "object-name.h"
 #include "parse-options.h"
+#include "preload-index.h"
 #include "string-list.h"
 #include "rerere.h"
 #include "unpack-trees.h"

builtin/diff-files.c

@@ -8,6 +8,7 @@
 #include "diff.h"
 #include "diff-merges.h"
 #include "commit.h"
+#include "preload-index.h"
 #include "revision.h"
 #include "builtin.h"
 #include "submodule.h"

builtin/diff-index.c

@@ -3,6 +3,7 @@
 #include "diff.h"
 #include "diff-merges.h"
 #include "commit.h"
+#include "preload-index.h"
 #include "revision.h"
 #include "builtin.h"
 #include "setup.h"

builtin/diff.c

@@ -16,6 +16,7 @@
 #include "diff.h"
 #include "diff-merges.h"
 #include "diffcore.h"
+#include "preload-index.h"
 #include "revision.h"
 #include "log-tree.h"
 #include "builtin.h"

builtin/stash.c

@@ -17,6 +17,7 @@
 #include "run-command.h"
 #include "dir.h"
 #include "entry.h"
+#include "preload-index.h"
 #include "rerere.h"
 #include "revision.h"
 #include "setup.h"

builtin/submodule--helper.c

@@ -11,6 +11,7 @@
 #include "parse-options.h"
 #include "quote.h"
 #include "pathspec.h"
+#include "preload-index.h"
 #include "dir.h"
 #include "setup.h"
 #include "sparse-index.h"

cache.h

@@ -318,9 +318,6 @@ extern struct index_state the_index;
 
 /* Initialize and use the cache information */
 struct lock_file;
-void preload_index(struct index_state *index,
-		   const struct pathspec *pathspec,
-		   unsigned int refresh_flags);
 int do_read_index(struct index_state *istate, const char *path,
 		  int must_exist); /* for testting only! */
 int read_index_from(struct index_state *, const char *path,

preload-index.c

@@ -8,6 +8,7 @@
 #include "fsmonitor.h"
 #include "gettext.h"
 #include "config.h"
+#include "preload-index.h"
 #include "progress.h"
 #include "thread-utils.h"
 #include "repository.h"

preload-index.h

@@ -0,0 +1,15 @@
+#ifndef PRELOAD_INDEX_H
+#define PRELOAD_INDEX_H
+
+struct index_state;
+struct pathspec;
+struct repository;
+
+void preload_index(struct index_state *index,
+		   const struct pathspec *pathspec,
+		   unsigned int refresh_flags);
+int repo_read_index_preload(struct repository *,
+			    const struct pathspec *pathspec,
+			    unsigned refresh_flags);
+
+#endif /* PRELOAD_INDEX_H */

read-cache.c

@@ -27,6 +27,7 @@
 #include "mem-pool.h"
 #include "name-hash.h"
 #include "object-name.h"
+#include "preload-index.h"
 #include "resolve-undo.h"
 #include "revision.h"
 #include "run-command.h"

repository.h

@@ -221,9 +221,6 @@ int repo_hold_locked_index(struct repository *repo,
 			   struct lock_file *lf,
 			   int flags);
 
-int repo_read_index_preload(struct repository *,
-			    const struct pathspec *pathspec,
-			    unsigned refresh_flags);
 int repo_read_index_unmerged(struct repository *);
 /*
  * Opportunistically update the index but do not complain if we can't.