From f230c64b5ad069b271f163da3142df52eab1202b Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 26 Feb 2014 04:27:50 +0100
Subject: [PATCH] mount: don't send out PropertiesChanged message if actually
 nothing got changed

(cherry picked from commit ff5f34d08c191c326c41a083745522383ac86cae)
---
 src/core/mount.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/core/mount.c b/src/core/mount.c
index a0cea1e..75b133b 100644
--- a/src/core/mount.c
+++ b/src/core/mount.c
@@ -1388,7 +1388,7 @@ static int mount_add_one(
         _cleanup_free_ char *e = NULL, *w = NULL, *o = NULL, *f = NULL;
         bool load_extras = false;
         MountParameters *p;
-        bool delete;
+        bool delete, changed = false;
         Unit *u;
         int r;
 
@@ -1456,6 +1456,7 @@ static int mount_add_one(
                 }
 
                 unit_add_to_load_queue(u);
+                changed = true;
         } else {
                 delete = false;
 
@@ -1474,6 +1475,7 @@ static int mount_add_one(
                         /* Load in the extras later on, after we
                          * finished initialization of the unit */
                         load_extras = true;
+                        changed = true;
                 }
         }
 
@@ -1485,10 +1487,16 @@ static int mount_add_one(
         }
 
         p = &MOUNT(u)->parameters_proc_self_mountinfo;
+
+        changed = changed ||
+                !streq_ptr(p->options, options) ||
+                !streq_ptr(p->what, what) ||
+                !streq_ptr(p->fstype, fstype);
+
         if (set_flags) {
                 MOUNT(u)->is_mounted = true;
                 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
-                MOUNT(u)->just_changed = !streq_ptr(p->options, o);
+                MOUNT(u)->just_changed = changed;
         }
 
         MOUNT(u)->from_proc_self_mountinfo = true;
@@ -1511,7 +1519,8 @@ static int mount_add_one(
                         goto fail;
         }
 
-        unit_add_to_dbus_queue(u);
+        if (changed)
+                unit_add_to_dbus_queue(u);
 
         return 0;