From 71468248567e6bf1e794094d9b5f87ac61de033a Mon Sep 17 00:00:00 2001
From: Judd Vinet <judd@archlinux.org>
Date: Wed, 9 Nov 2005 21:21:17 +0000
Subject: added logic to free up initrd memory once it's not needed anymore

---
 rc.sysinit | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/rc.sysinit b/rc.sysinit
index e9dad36..af6bcf5 100755
--- a/rc.sysinit
+++ b/rc.sysinit
@@ -39,8 +39,13 @@ if [ -e /initrd/dev/mapper/root ]; then
 	mkdir /dev/mapper 2>/dev/null
 	cp -a /initrd/dev/mapper/root /dev/mapper/root
 fi
-# Unmount the old initrd, if it exists
-[ -d /initrd ] && umount /initrd 2>/dev/null
+# Unmount and free up the old initrd if it exists
+if [ -f /initrd/linuxrc ]; then
+	stat_busy "Freeing memory from initial ramdisk"
+	umount /initrd 2>/dev/null
+	/sbin/blockdev --flushbufs /dev/rd/0 2>/dev/null
+	stat_done
+fi
 
 # TODO: set up non-root encrypted partition mappings
 
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