Index: linux-2.6/include/linux/fs.h
===================================================================
--- linux-2.6.orig/include/linux/fs.h
+++ linux-2.6/include/linux/fs.h
@@ -211,6 +211,7 @@ struct inodes_stat_t {
 #define MS_KERNMOUNT	(1<<22) /* this is a kern_mount call */
 #define MS_I_VERSION	(1<<23) /* Update inode I_version field */
 #define MS_STRICTATIME	(1<<24) /* Always perform atime updates */
+#define MS_FROZEN	(1<<25) /* bdev has been frozen */
 #define MS_NOSEC	(1<<28)
 #define MS_BORN		(1<<29)
 #define MS_ACTIVE	(1<<30)
@@ -2047,6 +2048,8 @@ extern struct super_block *freeze_bdev(s
 extern void emergency_thaw_all(void);
 extern int thaw_bdev(struct block_device *bdev, struct super_block *sb);
 extern int fsync_bdev(struct block_device *);
+extern void freeze_filesystems(void);
+extern void thaw_filesystems(void);
 #else
 static inline void bd_forget(struct inode *inode) {}
 static inline int sync_blockdev(struct block_device *bdev) { return 0; }
@@ -2061,6 +2064,9 @@ static inline int thaw_bdev(struct block
 {
 	return 0;
 }
+
+static inline void freeze_filesystems(void) {}
+static inline void thaw_filesystems(void) {}
 #endif
 extern int sync_filesystem(struct super_block *);
 extern const struct file_operations def_blk_fops;
Index: linux-2.6/fs/block_dev.c
===================================================================
--- linux-2.6.orig/fs/block_dev.c
+++ linux-2.6/fs/block_dev.c
@@ -314,6 +314,62 @@ out:
 }
 EXPORT_SYMBOL(thaw_bdev);
 
+/**
+ * freeze_filesystems - Force all filesystems into a consistent state.
+ */
+void freeze_filesystems(void)
+{
+	struct super_block *sb;
+
+	/*
+	 * This is necessary, because some filesystems (e.g. ext3) lock
+	 * mutexes in their .freeze_fs() callbacks and leave them locked for
+	 * their .unfreeze_fs() callbacks to unlock.  This is done under
+	 * bdev->bd_fsfreeze_mutex, which is then released, but it makes
+	 * lockdep think something may be wrong when freeze_bdev() attempts
+	 * to acquire bdev->bd_fsfreeze_mutex for the next filesystem.
+	 */
+	lockdep_off();
+
+	/*
+	 * Freeze in reverse order so filesystems depending on others are
+	 * frozen in the right order (eg. loopback on ext3).
+	 */
+	list_for_each_entry_reverse(sb, &super_blocks, s_list) {
+		if (!sb->s_root || !sb->s_bdev ||
+		    (sb->s_frozen == SB_FREEZE_TRANS) ||
+		    (sb->s_flags & MS_RDONLY))
+			continue;
+
+		freeze_bdev(sb->s_bdev);
+		sb->s_flags |= MS_FROZEN;
+	}
+
+	lockdep_on();
+}
+
+/**
+ * thaw_filesystems - Make all filesystems active again.
+ */
+void thaw_filesystems(void)
+{
+	struct super_block *sb;
+
+	/*
+	 * This is necessary for the same reason as in freeze_filesystems()
+	 * above.
+	 */
+	lockdep_off();
+
+	list_for_each_entry(sb, &super_blocks, s_list)
+		if (sb->s_flags & MS_FROZEN) {
+			sb->s_flags &= ~MS_FROZEN;
+			thaw_bdev(sb->s_bdev, sb);
+		}
+
+	lockdep_on();
+}
+
 static int blkdev_writepage(struct page *page, struct writeback_control *wbc)
 {
 	return block_write_full_page(page, blkdev_get_block, wbc);
Index: linux-2.6/kernel/power/process.c
===================================================================
--- linux-2.6.orig/kernel/power/process.c
+++ linux-2.6/kernel/power/process.c
@@ -12,10 +12,10 @@
 #include <linux/oom.h>
 #include <linux/suspend.h>
 #include <linux/module.h>
-#include <linux/syscalls.h>
 #include <linux/freezer.h>
 #include <linux/delay.h>
 #include <linux/workqueue.h>
+#include <linux/fs.h>
 
 /* 
  * Timeout for stopping processes
@@ -147,6 +147,10 @@ int freeze_processes(void)
 		goto Exit;
 	printk("done.\n");
 
+	pr_info("Freezing filesystems ... ");
+	freeze_filesystems();
+	pr_info("done.\n");
+
 	printk("Freezing remaining freezable tasks ... ");
 	error = try_to_freeze_tasks(false);
 	if (error)
@@ -188,6 +192,7 @@ void thaw_processes(void)
 	printk("Restarting tasks ... ");
 	thaw_workqueues();
 	thaw_tasks(true);
+	thaw_filesystems();
 	thaw_tasks(false);
 	schedule();
 	printk("done.\n");