MAX_ORDER is not inclusive: the maximum allocation order buddy allocator
can deliver is MAX_ORDER-1.
Fix MAX_ORDER usage in calculate_order().
Link: https://lkml.kernel.org/r/20230315113133.11326-9-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
/*
* Doh this slab cannot be placed using slub_max_order.
*/
- order = calc_slab_order(size, 1, MAX_ORDER, 1);
+ order = calc_slab_order(size, 1, MAX_ORDER - 1, 1);
if (order < MAX_ORDER)
return order;
return -ENOSYS;