Hello Pavel Machek:

This patch can fix, That if run suspend without swaping device/file will Oops.

--- linux-2.5.42/kernel/suspend.c	Sat Oct 12 21:25:06 2002
+++ linux-2.5.42-suspend/kernel/suspend.c	Sat Oct 12 21:28:03 2002
@@ -309,6 +309,9 @@
 	union diskpage *cur;
 	struct page *page;
 
+	if (root_swap == 0xFFFF)  /* ignored */
+		return;
+
 	page = alloc_page(GFP_ATOMIC);
 	if (!page)
 		panic("Out of memory in mark_swapfiles");
@@ -686,6 +689,7 @@
 	if(nr_free_pages() < nr_needed_pages) {
 		printk(KERN_CRIT "%sCouldn't get enough free pages, on %d pages short\n",
 		       name_suspend, nr_needed_pages-nr_free_pages());
+		root_swap = 0xFFFF;
 		spin_unlock_irq(&suspend_pagedir_lock);
 		return 1;
 	}
@@ -843,8 +847,10 @@
 		PRINTK("Syncing disks before copy\n");
 		do_suspend_sync();
 
+		PRINTK("Doing drivers_suspend\n");
 		/* Save state of all device drivers, and stop them. */		   
 		if(drivers_suspend()==0)
+			PRINTK("Doing do_magic(0)\n");
 			/* If stopping device drivers worked, we proceed basically into
 			 * suspend_save_image.
 			 *


-- 
		- Hu Gang