diff --git a/man/systemd.device.xml b/man/systemd.device.xml
index effed098dd..d156095526 100644
--- a/man/systemd.device.xml
+++ b/man/systemd.device.xml
@@ -83,6 +83,12 @@
the escaping logic used to convert a file system path to a unit
name see
systemd.unit5.
+
+ Device units will be reloaded by systemd whenever the
+ corresponding device generates a changed event.
+ Other units can use ReloadPropagatedFrom= to react
+ to that event
+
diff --git a/src/core/device.c b/src/core/device.c
index 87186f135b..5366ba050f 100644
--- a/src/core/device.c
+++ b/src/core/device.c
@@ -766,7 +766,27 @@ static int device_dispatch_io(sd_event_source *source, int fd, uint32_t revents,
return 0;
}
- if (streq(action, "remove")) {
+ if (streq(action, "change")) {
+ _cleanup_free_ char *e = NULL;
+ Unit *u;
+
+ r = unit_name_from_path(sysfs, ".device", &e);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate unit name from device path: %m");
+
+ u = manager_get_unit(m, e);
+ if (!u) {
+ log_error("Failed to get unit from sysfs name.");
+ return 0;
+ }
+
+ r = manager_add_job(m, JOB_RELOAD, u, JOB_REPLACE, NULL, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to add job to manager : %m");
+ return 0;
+ }
+
+ } else if (streq(action, "remove")) {
r = swap_process_device_remove(m, dev);
if (r < 0)
log_error_errno(r, "Failed to process swap device remove event: %m");