Fix bug in Linux current_process_memory_usage() where we weren't taki…

…ng the fast path if private_committed wasn't being asked for.

include/llfio/v2.0/detail/impl/map_handle.ipp

@@ -125,8 +125,9 @@ namespace detail
             if(-1 == ::munmap(p->addr, _bytes))
 #endif
             {
+              std::cerr << "munmap failed with " << strerror(errno) << ". addr was " << p->addr << " bytes was " << _bytes << std::endl;
               LLFIO_LOG_FATAL(nullptr,
-                              "map_handle cache failed to trim a map! If on Linux, you may have exceeded the "
+                              "FATAL: map_handle cache failed to trim a map! If on Linux, you may have exceeded the "
                               "64k VMA process limit, set the LLFIO_DEBUG_LINUX_MUNMAP macro at the top of posix/map_handle.ipp to cause dumping of VMAs to "
                               "/tmp/llfio_unmap_debug_smaps.txt, and combine with strace to figure it out.");
               abort();

include/llfio/v2.0/detail/impl/posix/map_handle.ipp

@@ -157,7 +157,7 @@ map_handle::~map_handle()
     if(ret.has_error())
     {
       LLFIO_LOG_FATAL(_v.fd,
-                      "map_handle::~map_handle() close failed. Cause is typically other code modifying mapped regions. If on Linux, you may have exceeded the "
+                      "FATAL: map_handle::~map_handle() close failed. Cause is typically other code modifying mapped regions. If on Linux, you may have exceeded the "
                       "64k VMA process limit, set the LLFIO_DEBUG_LINUX_MUNMAP macro at the top of posix/map_handle.ipp to cause dumping of VMAs to "
                       "/tmp/llfio_unmap_debug_smaps.txt, and combine with strace to figure it out.");
       abort();

include/llfio/v2.0/detail/impl/posix/utils.ipp

@@ -341,7 +341,7 @@ namespace utils
       private_paged_in = ??? MISSING
 
       */
-      if(want & process_memory_usage::want::private_committed_inaccurate)
+      if(!(want & process_memory_usage::want::private_committed) || (want & process_memory_usage::want::private_committed_inaccurate))
       {
         process_memory_usage ret;
         if((want & process_memory_usage::want::total_address_space_in_use) || (want & process_memory_usage::want::total_address_space_paged_in) ||