Merge branch 'nd/daemonize-gc' into maint

"git gc --auto" was recently changed to run in the background to
give control back early to the end-user sitting in front of the
terminal, but it forgot that housekeeping involving reflogs should
be done without other processes competing for accesses to the refs.

* nd/daemonize-gc:
gc --auto: do not lock refs in the background

diff --git a/builtin/gc.c b/builtin/gc.c
index 85f5c2bc62ec1ead593f5aa2e3d7077e65f2f061..8d219d8c42cb4dfb64468f9b4d82648bff646685 100644 (file)
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -26,6 +26,7 @@ static const char * const builtin_gc_usage[] = {
 };
 
 static int pack_refs = 1;
+static int prune_reflogs = 1;
 static int aggressive_depth = 250;
 static int aggressive_window = 250;
 static int gc_auto_threshold = 6700;
@@ -258,6 +259,19 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
        return NULL;
 }
 
+static int gc_before_repack(void)
+{
+       if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
+               return error(FAILED_RUN, pack_refs_cmd.argv[0]);
+
+       if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
+               return error(FAILED_RUN, reflog.argv[0]);
+
+       pack_refs = 0;
+       prune_reflogs = 0;
+       return 0;
+}
+
 int cmd_gc(int argc, const char **argv, const char *prefix)
 {
        int aggressive = 0;
@@ -320,12 +334,15 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
                                fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
                        fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
                }
-               if (detach_auto)
+               if (detach_auto) {
+                       if (gc_before_repack())
+                               return -1;
                        /*
                         * failure to daemonize is ok, we'll continue
                         * in foreground
                         */
                        daemonize();
+               }
        } else
                add_repack_all_option();
 
@@ -337,11 +354,8 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
                    name, (uintmax_t)pid);
        }
 
-       if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
-               return error(FAILED_RUN, pack_refs_cmd.argv[0]);
-
-       if (run_command_v_opt(reflog.argv, RUN_GIT_CMD))
-               return error(FAILED_RUN, reflog.argv[0]);
+       if (gc_before_repack())
+               return -1;
 
        if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
                return error(FAILED_RUN, repack.argv[0]);