From 4ce940e9a436ef9d19bd52bd9c2f7ac24d1c842c Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 6 Nov 2014 15:20:29 +0100
Subject: [PATCH] systemctl: when invokes as "reboot -f", sync()

We do this in the clean shutdown path in shutdown.c, hence we should do
is for "reboot -f", too.

(cherry picked from commit 4a3ad39957399c4a30fc472a804e72907ecaa4f9)
---
 src/systemctl/systemctl.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 8481a9b20c..207a5e78dc 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -6948,8 +6948,13 @@ done:
 
 static int halt_now(enum action a) {
 
-/* Make sure C-A-D is handled by the kernel from this
-         * point on... */
+        /* The kernel will automaticall flush ATA disks and suchlike
+         * on reboot(), but the file systems need to be synce'd
+         * explicitly in advance. */
+        sync();
+
+        /* Make sure C-A-D is handled by the kernel from this point
+         * on... */
         reboot(RB_ENABLE_CAD);
 
         switch (a) {