Re: 2.6.15-rc1-mm2

[Hugh Dickins <hugh@veritas.com>]

On Sun, 20 Nov 2005, Michal Piotrowski wrote:
> 
> It looks similar to Rafael J. Wysocki report. It's full reproductible
> and appears when playing mp3's in totem.
> 
> debian:/home/michal# cat /var/log/kern.log | grep -c "Bad page state
> at free_hot_cold_page"

Please let me know if it's not fixed by:

--- 2.6.15-rc1-mm2/sound/core/memalloc.c	2005-11-12 09:01:28.000000000 +0000
+++ linux/sound/core/memalloc.c	2005-11-19 19:03:32.000000000 +0000
@@ -197,6 +197,7 @@ void *snd_malloc_pages(size_t size, gfp_
 
 	snd_assert(size > 0, return NULL);
 	snd_assert(gfp_flags != 0, return NULL);
+	gfp_flags |= __GFP_COMP;	/* compound page lets parts be mapped */
 	pg = get_order(size);
 	if ((res = (void *) __get_free_pages(gfp_flags, pg)) != NULL) {
 		mark_pages(virt_to_page(res), pg);
@@ -241,6 +242,7 @@ static void *snd_malloc_dev_pages(struct
 	snd_assert(dma != NULL, return NULL);
 	pg = get_order(size);
 	gfp_flags = GFP_KERNEL
+		| __GFP_COMP	/* compound page lets parts be mapped */
 		| __GFP_NORETRY /* don't trigger OOM-killer */
 		| __GFP_NOWARN; /* no stack trace print - this call is non-critical */
 	res = dma_alloc_coherent(dev, PAGE_SIZE << pg, dma, gfp_flags);