mm/slab_common: use helper function is_power_of_2()

Use helper function is_power_of_2() to check if KMALLOC_MIN_SIZE is power
of two. Minor readability improvement.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/r/20220217091609.8214-1-linmiaohe@huawei.com

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 23f2ab0713b7748accfb7c1154f1f93b412be67c..6ee64d6208b395980d346d8bf4518bd77eec3f60 100644 (file)
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -807,7 +807,7 @@ void __init setup_kmalloc_cache_index_table(void)
        unsigned int i;
 
        BUILD_BUG_ON(KMALLOC_MIN_SIZE > 256 ||
-               (KMALLOC_MIN_SIZE & (KMALLOC_MIN_SIZE - 1)));
+               !is_power_of_2(KMALLOC_MIN_SIZE));
 
        for (i = 8; i < KMALLOC_MIN_SIZE; i += 8) {
                unsigned int elem = size_index_elem(i);