The patch titled
Subject: slub: min order when debug_guardpage_minorder > 0
has been added to the -mm tree. Its filename is
slub-min-order-when-debug_guardpage_minorder-0.patch
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See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
Subject: 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.
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN mm/slub.c~slub-min-order-when-debug_guardpage_minorder-0 mm/slub.c
--- a/mm/slub.c~slub-min-order-when-debug_guardpage_minorder-0
+++ a/mm/slub.c
@@ -3654,6 +3654,9 @@ 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 *);
_
Subject: Subject: slub: min order when debug_guardpage_minorder > 0
Patches currently in -mm which might be from sgruszka@xxxxxxxxxx are
linux-next.patch
mm-more-intensive-memory-corruption-debug.patch
mm-more-intensive-memory-corruption-debug-fix.patch
pm-hibernate-do-not-count-debug-pages-as-savable.patch
slub-min-order-when-debug_guardpage_minorder-0.patch
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