Re: [Lhms-devel] [RFC] buddy allocator without bitmap [2/4]

[Dave Hansen]

On Thu, 2004-08-26 at 05:03, Hiroyuki KAMEZAWA wrote:
> -		MARK_USED(index + size, high, area);
> +		page[size].flags |= (1 << PG_private);
> +		page[size].private = high;
>   	}
>   	return page;
>   }
...
> +		/* Atomic operation is needless here */
> +		page->flags &= ~(1 << PG_private);

See linux/page_flags.h:

#define SetPagePrivate(page)    set_bit(PG_private, &(page)->flags)
#define ClearPagePrivate(page)  clear_bit(PG_private, &(page)->flags)
#define PagePrivate(page)       test_bit(PG_private, &(page)->flags)

-- Dave

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/