diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-03-15 14:31:31 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-05 19:42:46 -0700 |
| commit | 7a16d7c7619b26e5e9bfc1360de0d02a94f7d9eb (patch) | |
| tree | a4f67bcc5d47d575a4f27dd988712697363a8d2b /mm | |
| parent | 668a89907c6b908c4a72ef22e70bbc95efca2000 (diff) | |
| download | lwn-7a16d7c7619b26e5e9bfc1360de0d02a94f7d9eb.tar.gz lwn-7a16d7c7619b26e5e9bfc1360de0d02a94f7d9eb.zip | |
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')
| -rw-r--r-- | mm/slub.c | 2 |
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; |