Re: [PATCH 1/4] [OMAPZOOM] [UPDATE]DSPBRIDGE: Memory lock for DMM.

[Artem Bityutskiy <dedekind@yandex.ru>]

Guzman Lugo, Fernando wrote:
> +		patemp = pa;
> +		while (temp++ < num4KEntries) {
> +			/* FIXME: This is a hack to avoid getting pages for
> +			 *  video overlay		*/
> +			if (pfn_valid(__phys_to_pfn(patemp))) {
> +				pg = phys_to_page(patemp);
> +				get_page(pg);
> +				if (page_count(pg) <= 1) {
> +					printk(KERN_EMERG "DSPBRIDGE:MAP  "
> +						"function: COUNT 0 FOR PA "
> +						"0x%x\n", patemp);
> +					printk(KERN_EMERG "Bad page state"
> +						"in process '%s'\n"
> +						"page:%p flags:0x%0*lx "
> +						"mapping:%p mapcount:%d "
> +						"count:%d\n"
> +						"Trying to fix it up, but "
> +						"a reboot is needed\n"
> +						"Backtrace:\n",
> +						current->comm, pg,
> +						(int)(2*sizeof(unsigned long)),
> +						(unsigned long)pg->flags,
> +						pg->mapping, page_mapcount(pg),
> +						page_count(pg));
> +					dump_stack();
> +					BUG_ON(1);
> +				}
> +			}

Sorry for repeating myself, I just thought I have a good
suggestion. You could try the Obfuscated C code contest
and win some money with this code:

http://www.ioccc.org

:-)

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
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