On Fri, 22 Sep 2006 12:30:45 +0900
KAMEZAWA Hiroyuki <[email protected]> wrote:
> Before kfree(), we should check zone_pcp() is not boot_pageset[].
>
> Signed-Off-By KAMEZAWA Hiroyuki <[email protected]>
>
> Index: linux-2.6.18/mm/page_alloc.c
> ===================================================================
> --- linux-2.6.18.orig/mm/page_alloc.c 2006-09-20 12:42:06.000000000 +0900
> +++ linux-2.6.18/mm/page_alloc.c 2006-09-22 12:22:03.000000000 +0900
> @@ -1844,9 +1844,11 @@
>
> for_each_zone(zone) {
> struct per_cpu_pageset *pset = zone_pcp(zone, cpu);
> -
> - zone_pcp(zone, cpu) = NULL;
> - kfree(pset);
> + /* When canceled, zone_pcp still points to boot_pageset[] */
> + if (zone_pcp(zone, cpu) != &boot_pageset[cpu]) {
> + zone_pcp(zone, cpu) = NULL;
> + kfree(pset);
> + }
> }
> }
Oh, I see what you mean.
Oh well, zeroing them all out in process_zones() will work.
-
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