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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2023-03-15 14:31:31 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-04-05 19:42:46 -0700
commit7a16d7c7619b26e5e9bfc1360de0d02a94f7d9eb (patch)
treea4f67bcc5d47d575a4f27dd988712697363a8d2b /mm/slub.c
parent668a89907c6b908c4a72ef22e70bbc95efca2000 (diff)
mm/slub: fix MAX_ORDER usage in calculate_order()
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>
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 39327e98fce3..32eb6b50fe18 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4171,7 +4171,7 @@ static inline int calculate_order(unsigned int size)
/*
* 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;