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-rw-r--r--man/udev.xml4
1 files changed, 4 insertions, 0 deletions
diff --git a/man/udev.xml b/man/udev.xml
index 09254f818e..9b97ee63d9 100644
--- a/man/udev.xml
+++ b/man/udev.xml
@@ -465,6 +465,10 @@
that is enforced on <filename>systemd-udevd.service</filename>.</para>
<para>Please also note that <literal>:=</literal> and <literal>=</literal> are clearing
both, program and builtin commands.</para>
+ <para>In order to activate long-running processes from udev rules, provide a service unit, and
+ pull it in from a udev device using the <varname>SYSTEMD_WANTS</varname> device property. See
+ <citerefentry><refentrytitle>systemd.device</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
</listitem>
</varlistentry>