From a3d939ae7b5f82688a6d3450f95286eaea338328 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 2 Oct 2015 11:21:24 -0400 Subject: dm: convert ffs to __ffs ffs counts bit starting with 1 (for the least significant bit), __ffs counts bits starting with 0. This patch changes various occurrences of ffs to __ffs and removes subtraction of 1 from the result. Note that __ffs (unlike ffs) is not defined when called with zero argument, but it is not called with zero argument in any of these cases. Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer --- drivers/md/dm-cache-policy-smq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/md/dm-cache-policy-smq.c') diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c index 1ffbeb1b3ea6..28d4586748d0 100644 --- a/drivers/md/dm-cache-policy-smq.c +++ b/drivers/md/dm-cache-policy-smq.c @@ -566,7 +566,7 @@ static int h_init(struct hash_table *ht, struct entry_space *es, unsigned nr_ent ht->es = es; nr_buckets = roundup_pow_of_two(max(nr_entries / 4u, 16u)); - ht->hash_bits = ffs(nr_buckets) - 1; + ht->hash_bits = __ffs(nr_buckets); ht->buckets = vmalloc(sizeof(*ht->buckets) * nr_buckets); if (!ht->buckets) -- cgit v1.2.3