From 294ea175065bd8f42056094c2f2c2d5b538d8f18 Mon Sep 17 00:00:00 2001
From: Peter Hjalmarsson <xake@rymdraket.net>
Date: Wed, 19 Jan 2011 23:49:24 +0100
Subject: [PATCH] Use devtpmfs when avaible

---
 defaults/initrd.scripts | 9 +++++++--
 defaults/linuxrc        | 2 ++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/defaults/initrd.scripts b/defaults/initrd.scripts
index cfe3abd..034696b 100755
--- a/defaults/initrd.scripts
+++ b/defaults/initrd.scripts
@@ -307,8 +307,13 @@ run_shell() {
 }
 
 runmdev() {
-	# busybox udev replacement
-	mdev -s
+	# Use devtmpfs if enabled in kernel,
+	# else busybox udev replacement
+	if grep -qs devtmpfs /proc/filesystems ; then
+		mount -t devtmpfs devtmpfs /dev
+	else
+		mdev -s
+	fi
 }
 
 test_success() {
diff --git a/defaults/linuxrc b/defaults/linuxrc
index ecfb546..bbe397e 100755
--- a/defaults/linuxrc
+++ b/defaults/linuxrc
@@ -724,6 +724,8 @@ fi
 cd "${CHROOT}"
 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 echo -ne "${BOLD}.${NORMAL}"
+# If devtmpfs is mounted assume genkernel mounted it at /dev and try unmounting it
+grep -qs devtmpfs /proc/mounts && ( umount /dev || echo '*: Failed to unmount the devtmpfs /dev!' )
 umount /sys || echo '*: Failed to unmount the ramdisk /sys!'
 umount /proc || echo '*: Failed to unmount the ramdisk /proc!'
 echo -e "${BOLD}.${NORMAL}"