[gnome-continuous-yocto/gnomeostree-3.22-krogoth: 33/246] initramfs-live-boot: Make sure we kill udev before switching root when live booting

[Emmanuele Bassi <ebassi src gnome org>]

commit 6ac72e8be20a3e6e11750905c1710b07b7648552
Author: Alejandro Hernandez <alejandro hernandez linux intel com>
Date:   Tue Jul 26 22:10:02 2016 +0000

    initramfs-live-boot: Make sure we kill udev before switching root when live booting
    
    When live booting, we need to make sure the running udev processes are killed
    to avoid unexepected behavior, we do this just before switching root,
    once we do, a new udev process will be spawned from init and will take care
    of whatever work was still missing
    
    [YOCTO #9520]
    
    (From OE-Core rev: e88d9e56952414e6214804f9b450c7106d04318d)
    
    (From OE-Core rev: e5190cdcf4efe5e80967bded13ef8e530811b0ec)
    
    Signed-off-by: Alejandro Hernandez <alejandro hernandez linux intel com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>
    Signed-off-by: Armin Kuster <akuster808 gmail com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/recipes-core/initrdscripts/files/init-live.sh |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/meta/recipes-core/initrdscripts/files/init-live.sh 
b/meta/recipes-core/initrdscripts/files/init-live.sh
index 09fb479..441b41c 100644
--- a/meta/recipes-core/initrdscripts/files/init-live.sh
+++ b/meta/recipes-core/initrdscripts/files/init-live.sh
@@ -80,7 +80,9 @@ read_args() {
 boot_live_root() {
     # Watches the udev event queue, and exits if all current events are handled
     udevadm settle --timeout=3 --quiet
-    killall "${_UDEV_DAEMON##*/}" 2>/dev/null
+    # Kills the current udev running processes, which survived after
+    # device node creation events were handled, to avoid unexpected behavior
+    killall -9 "${_UDEV_DAEMON##*/}" 2>/dev/null
 
     # Allow for identification of the real root even after boot
     mkdir -p  ${ROOT_MOUNT}/media/realroot