Move maintainence thread func take u64 rather than int

signed rollover is UB

vendored/libfuse/include/maintenance_thread.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "base_types.h"
+
 #include <functional>
 #include <vector>
 
@@ -9,5 +11,5 @@ class MaintenanceThread
 public:
   static void setup();
   static void stop();
-  static void push_job(const std::function<void(int)> &func);
+  static void push_job(const std::function<void(u64)> &func);
 };

vendored/libfuse/lib/fuse.cpp

@@ -3674,19 +3674,19 @@ fuse_gc1()
 void
 fuse_populate_maintenance_thread(struct fuse *f_)
 {
-  MaintenanceThread::push_job([=](int count_)
+  MaintenanceThread::push_job([=](u64 count_)
   {
     if(remember_nodes())
       fuse_prune_remembered_nodes();
   });
 
-  MaintenanceThread::push_job([](int count_)
+  MaintenanceThread::push_job([](u64 count_)
   {
     if((count_ % 15) == 0)
       fuse_gc1();
   });
 
-  MaintenanceThread::push_job([=](int count_)
+  MaintenanceThread::push_job([=](u64 count_)
   {
     if(fuse_cfg.debug)
       metrics_log_nodes_info_to_tmp_dir(f_);

vendored/libfuse/lib/maintenance_thread.cpp

@@ -9,7 +9,7 @@
 #include <unistd.h>
 
 static pthread_t g_thread;
-static std::vector<std::function<void(int)>> g_funcs;
+static std::vector<std::function<void(u64)>> g_funcs;
 static mutex_t g_mutex;
 
 static
@@ -49,7 +49,7 @@ MaintenanceThread::setup()
 }
 
 void
-MaintenanceThread::push_job(const std::function<void(int)> &func_)
+MaintenanceThread::push_job(const std::function<void(u64)> &func_)
 {
   LockGuard lg(g_mutex);