diff --git a/units/modprobe@.service b/units/modprobe@.service
index 05e5b4f600..b099b90eba 100644
--- a/units/modprobe@.service
+++ b/units/modprobe@.service
@@ -7,6 +7,20 @@
 #  the Free Software Foundation; either version 2.1 of the License, or
 #  (at your option) any later version.
 
+# This unit loads a specific kernel module explicitly and synchronizes on its
+# initialization to be complete. This unit should only be used as dependency
+# if automatic module loading cannot be used for a module, i.e. in exceptional
+# cases. These cases may include:
+#
+# 1. The primary API exposed by the module is a device node that is normally
+#    managed by systemd-tmpfiles-setup-dev-early.service (and thus auto-loading
+#    is generally supported), but some service already needs the functionality
+#    during even earlier boot.
+#
+# 2. The primary API exposed by the module is some directory in /sys/, /proc/
+#    or configfs, where simple access generally is not sufficient to load the
+#    module.
+
 [Unit]
 Description=Load Kernel Module %i
 DefaultDependencies=no
diff --git a/units/systemd-confext-initrd.service b/units/systemd-confext-initrd.service
index 4655018567..22461fa712 100644
--- a/units/systemd-confext-initrd.service
+++ b/units/systemd-confext-initrd.service
@@ -24,8 +24,8 @@ Before=local-fs-pre.target cryptsetup-pre.target systemd-tmpfiles-setup.service
 Wants=local-fs-pre.target cryptsetup-pre.target
 Conflicts=initrd-switch-root.target
 Before=initrd-switch-root.target
-Wants=modprobe@loop.service modprobe@dm_mod.service modprobe@squashfs.service modprobe@erofs.service
-After=modprobe@loop.service modprobe@dm_mod.service modprobe@squashfs.service modprobe@erofs.service
+Wants=modprobe@loop.service modprobe@dm_mod.service
+After=modprobe@loop.service modprobe@dm_mod.service
 
 [Service]
 Type=oneshot
diff --git a/units/systemd-mountfsd.service.in b/units/systemd-mountfsd.service.in
index 20a9b425ab..ef413684c3 100644
--- a/units/systemd-mountfsd.service.in
+++ b/units/systemd-mountfsd.service.in
@@ -10,8 +10,9 @@
 [Unit]
 Description=DDI File System Mounter
 Documentation=man:systemd-mountfsd.service(8)
+Wants=modprobe@loop.service modprobe@dm_mod.service
 Requires=systemd-mountfsd.socket
-After=systemd-mountfsd.socket
+After=systemd-mountfsd.socket modprobe@loop.service modprobe@dm_mod.service
 Conflicts=shutdown.target
 Before=sysinit.target shutdown.target
 DefaultDependencies=no
diff --git a/units/systemd-sysext-initrd.service b/units/systemd-sysext-initrd.service
index 4f0b8ff4de..f21990aad0 100644
--- a/units/systemd-sysext-initrd.service
+++ b/units/systemd-sysext-initrd.service
@@ -23,8 +23,8 @@ Before=local-fs-pre.target cryptsetup-pre.target systemd-tmpfiles-setup.service
 Wants=local-fs-pre.target cryptsetup-pre.target
 Conflicts=initrd-switch-root.target
 Before=initrd-switch-root.target
-Wants=modprobe@loop.service modprobe@dm_mod.service modprobe@squashfs.service modprobe@erofs.service
-After=modprobe@loop.service modprobe@dm_mod.service modprobe@squashfs.service modprobe@erofs.service
+Wants=modprobe@loop.service modprobe@dm_mod.service
+After=modprobe@loop.service modprobe@dm_mod.service
 
 [Service]
 Type=oneshot