--- devel/glib20/files/patch-gio_gunixmounts.c	(nonexistent)
+++ devel/glib20/files/patch-gio_gunixmounts.c	(working copy)
@@ -0,0 +1,33 @@ 
+--- gio/gunixmounts.c.orig	2020-10-01 16:17:53.138733000 +0300
++++ gio/gunixmounts.c	2020-10-18 01:26:30.563084000 +0300
+@@ -1654,10 +1654,28 @@
+ GList *
+ g_unix_mount_points_get (guint64 *time_read)
+ {
++  static GList *mnt_pts_last = NULL;
++  static guint64 time_read_last = 0;
++  GList *mnt_pts = NULL;
++  guint64 time_read_now;
++  G_LOCK_DEFINE_STATIC (unix_mount_points);
++
++  G_LOCK (unix_mount_points);
++
++  time_read_now = get_mount_points_timestamp ();
++  if (time_read_now != time_read_last || mnt_pts_last == NULL) {
++    time_read_last = time_read_now;
++    g_list_free_full (mnt_pts_last, (GDestroyNotify) g_unix_mount_point_free);
++    mnt_pts_last = _g_get_unix_mount_points ();
++  }
++  mnt_pts = g_list_copy_deep(mnt_pts_last, g_unix_mount_point_copy, NULL);
++
++  G_UNLOCK (unix_mount_points);
++
+   if (time_read)
+-    *time_read = get_mount_points_timestamp ();
++    *time_read = time_read_last;
+ 
+-  return _g_get_unix_mount_points ();
++  return mnt_pts;
+ }
+ 
+ /**