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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-01-10 15:07:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 16:30:43 -0800 |
| commit | fc8d8620d39dbbaf412b1b9247d77d196d92adb9 (patch) | |
| tree | aab70c3807026701f326bb8a88c81845da059d9b /mm/slub.c | |
| parent | c6968e73b90c2a2fb9a32d4bad249f8f70f70125 (diff) | |
| download | lwn-fc8d8620d39dbbaf412b1b9247d77d196d92adb9.tar.gz lwn-fc8d8620d39dbbaf412b1b9247d77d196d92adb9.zip | |
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@redhat.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/slub.c b/mm/slub.c index 025f6ac51569..d99acbf14e01 100644 --- a/mm/slub.c +++ b/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 *); |