Re: suspend-to-{RAM,disk} for 2.5.17

[Pavel Machek <pavel@ucw.cz>]

Hi!

> The rest is okay...
> 
> I'd try writing it this way, and though I've not tested it, I've walked
> buddy lists a few times in the past week or two:
> 
> 
> #ifdef CONFIG_SOFTWARE_SUSPEND
> int is_head_of_free_region(struct page *page)
> {
> 	zone_t *zone, *node_zones = pgdat_list->node_zones;
> 	unsigned long flags;
> 
> 	for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
> 		int order;
> 		list_t *curr;
> 
> 		/*
> 		 * Should not matter as we need quiescent system for
> 		 * suspend anyway, but...
> 		 */
> 		spin_lock_irqsave(&zone->lock, flags);
> 		for (order = MAX_ORDER - 1; order >= 0; --order)
> 			list_for_each(curr, &zone->free_area[order].free_list)
<== HERE ==>
> 				if (page == list_entry(curr, struct page, list))
> 					return 1 << order;
> 		spin_unlock_irqrestore(&zone->lock, flags);
> 
> 	}
> 	return 0;
> }
> #endif /* CONFIG_SOFTWARE_SUSPEND */

I had to add
	if (!curr) break; 

to fix the oops. It now looks way nicer. Thanx.
									Pavel
-- 
(about SSSCA) "I don't say this lightly.  However, I really think that the U.S.
no longer is classifiable as a democracy, but rather as a plutocracy." --hpa