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Subject[PATCH 04/10] ext4: use is_power_of_2 helper in ext4_mb_regular_allocator
Date
Use intuitive is_power_of_2 helper in ext4_mb_regular_allocator.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
---
fs/ext4/mballoc.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4031f8e2a660..b838944b5f09 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2795,10 +2795,7 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
* requests upto maximum buddy size we have constructed.
*/
if (i >= sbi->s_mb_order2_reqs && i <= MB_NUM_ORDERS(sb)) {
- /*
- * This should tell if fe_len is exactly power of 2
- */
- if ((ac->ac_g_ex.fe_len & (~(1 << (i - 1)))) == 0)
+ if (is_power_of_2(ac->ac_g_ex.fe_len))
ac->ac_2order = array_index_nospec(i - 1,
MB_NUM_ORDERS(sb));
}
--
2.30.0
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