quota: code cleanup for hash bits calculation
Code cleanup for hash bits calculation by
calling ilog2().
Link: https://lore.kernel.org/r/20190923135223.27674-1-cgxu519@zoho.com.cn
Signed-off-by: Chengguang Xu <cgxu519@zoho.com.cn>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 00a3c6d..26812a6 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2981,11 +2981,7 @@ static int __init dquot_init(void)
/* Find power-of-two hlist_heads which can fit into allocation */
nr_hash = (1UL << order) * PAGE_SIZE / sizeof(struct hlist_head);
- dq_hash_bits = 0;
- do {
- dq_hash_bits++;
- } while (nr_hash >> dq_hash_bits);
- dq_hash_bits--;
+ dq_hash_bits = ilog2(nr_hash);
nr_hash = 1UL << dq_hash_bits;
dq_hash_mask = nr_hash - 1;