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Message-Id: <1321633507-13614-3-git-send-email-sgruszka@redhat.com> Date: Fri, 18 Nov 2011 17:25:07 +0100 From: Stanislaw Gruszka <sgruszka@...hat.com> To: linux-mm@...ck.org Cc: linux-kernel@...r.kernel.org, Mel Gorman <mgorman@...e.de>, Andrea Arcangeli <aarcange@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, "Rafael J. Wysocki" <rjw@...k.pl>, Christoph Lameter <cl@...ux-foundation.org>, Stanislaw Gruszka <sgruszka@...hat.com> Subject: [PATCH v3 3/3] slub: min order when debug_guardpage_minorder > 0 Disable slub debug facilities and allocate slabs at minimal order when debug_guardpage_minorder > 0 to increase probability to catch random memory corruption by cpu exception. v1 -> v2: - use slub_max_order to minimalize slub order Signed-off-by: Stanislaw Gruszka <sgruszka@...hat.com> --- mm/slub.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index 7d2a996..a66be56 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3645,6 +3645,9 @@ void __init kmem_cache_init(void) struct kmem_cache *temp_kmem_cache_node; unsigned long kmalloc_size; + if (debug_guardpage_minorder()) + slub_max_order = 0; + kmem_size = offsetof(struct kmem_cache, node) + nr_node_ids * sizeof(struct kmem_cache_node *); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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