import systemd into kogaion-desktop, will make it boot WAY faster in live mode

1 files changed, 54 insertions, 0 deletions

diff --git a/sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch b/sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch
new file mode 100644
index 00000000..c730242c
--- /dev/null
+++ b/sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch
@@ -0,0 +1,54 @@
+From 9d17a215fb30cb3e49db516a39c9bec2159004a7 Mon Sep 17 00:00:00 2001
+From: Kay Sievers <kay@vrfy.org>
+Date: Thu, 24 Jul 2014 23:37:35 +0200
+Subject: [PATCH 3/3] udev: exclude MD from block device ownership event
+ locking
+
+MD instantiates devices at open(). This is incomptible with the
+locking logic, as the "change" event emitted when stopping a
+device will bring it back.
+---
+ src/udev/udevd.c | 23 +++++++----------------
+ 1 file changed, 7 insertions(+), 16 deletions(-)
+
+diff --git a/src/udev/udevd.c b/src/udev/udevd.c
+index a45d324..db935d6 100644
+--- a/src/udev/udevd.c
++++ b/src/udev/udevd.c
+@@ -285,26 +285,17 @@ static void worker_new(struct event *event)
+                                 udev_event->exec_delay = exec_delay;
+ 
+                         /*
+-                         * Take a "read lock" on the device node; this establishes
++                         * Take a shared lock on the device node; this establishes
+                          * a concept of device "ownership" to serialize device
+-                         * access. External processes holding a "write lock" will
++                         * access. External processes holding an exclusive lock will
+                          * cause udev to skip the event handling; in the case udev
+-                         * acquired the lock, the external process will block until
++                         * acquired the lock, the external process can block until
+                          * udev has finished its event handling.
+                          */
+-
+-                        /*
+-                         * <kabi_> since we make check - device seems unused - we try
+-                         *         ioctl to deactivate - and device is found to be opened
+-                         * <kay> sure, you try to take a write lock
+-                         * <kay> if you get it udev is out
+-                         * <kay> if you can't get it, udev is busy
+-                         * <kabi_> we cannot deactivate openned device  (as it is in-use)
+-                         * <kay> maybe we should just exclude dm from that thing entirely
+-                         * <kabi_> IMHO this sounds like a good plan for this moment
+-                         */
+-                        if (streq_ptr("block", udev_device_get_subsystem(dev)) &&
+-                            !startswith(udev_device_get_sysname(dev), "dm-")) {
++                        if (!streq_ptr(udev_device_get_action(dev), "remove") &&
++                            streq_ptr("block", udev_device_get_subsystem(dev)) &&
++                            !startswith(udev_device_get_sysname(dev), "dm-") &&
++                            !startswith(udev_device_get_sysname(dev), "md")) {
+                                 struct udev_device *d = dev;
+ 
+                                 if (streq_ptr("partition", udev_device_get_devtype(d)))
+-- 
+1.8.5.5
+