From ded3b131f51ba3aa64536019c4bfb0cb7a0df58b Mon Sep 17 00:00:00 2001
From: Victor Lowther <victor.lowther@gmail.com>
Date: Wed, 23 Jul 2008 21:29:27 -0500
Subject: Added powersave hook to change journal commit interval

---
 pm/power.d/Makefile.am    |  3 ++-
 pm/power.d/journal-commit | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 1 deletion(-)
 create mode 100644 pm/power.d/journal-commit

diff --git a/pm/power.d/Makefile.am b/pm/power.d/Makefile.am
index 8d39ed9..a3850e3 100644
--- a/pm/power.d/Makefile.am
+++ b/pm/power.d/Makefile.am
@@ -7,7 +7,8 @@ power_SCRIPTS =			\
 	xfs_buffer		\
 	readahead		\
 	intel-audio-powersave	\
-	wireless
+	wireless 		\
+	journal-commit
 
 EXTRA_DIST=$(power_SCRIPTS)
 
diff --git a/pm/power.d/journal-commit b/pm/power.d/journal-commit
new file mode 100644
index 0000000..be68fed
--- /dev/null
+++ b/pm/power.d/journal-commit
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+. ${PM_FUNCTIONS}
+
+# actually remount the file system
+remount_fs()
+{
+	# $1 = filesystem to remount
+	# $2 = mount option to change
+	mount -o remount,$2 $1
+}
+
+# invoked on an ext3 file system
+handle_ext3()
+{
+	# $1 = filesystem to remount
+	# $2 = commit time
+	remount_fs $1 "commit=${2}"
+}
+
+handle_filesystems()
+{
+	# $1 = new journal commit time in seconds
+	while read DEV MOUNT FSTYPE REST; 
+	do
+		command_exists "handle_${FSTYPE}" || continue
+		"handle_${FSTYPE}" $MOUNT $1
+	done < /proc/mounts
+}
+
+case $1 in
+	true) handle_filesystems 600 ;;
+	false) handle_filesystems 5 ;;
+	*) exit $NA ;;
+esac
+
+exit 0
+
-- 
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