Signed-off-by: Robert P. J. Day <rpjday@xxxxxxxxxxxxxx>
---
since the source file already includes the log2.h header file, it
seems pointless to re-invent the necessary routine.
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index cee16fa..fad8465 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -334,16 +334,6 @@ static int calc_max_buckets(void)
}
/*
- * Rounds a number down to a power of 2.
- */
-static uint32_t round_down(uint32_t n)
-{
- while (n & (n - 1))
- n &= (n - 1);
- return n;
-}
-
-/*
* Allocate room for a suitable hash table.
*/
static int init_hash_tables(struct dm_snapshot *s)
@@ -361,8 +351,7 @@ static int init_hash_tables(struct dm_snapshot *s)
hash_size = min(origin_dev_size, cow_dev_size) >> s->chunk_shift;
hash_size = min(hash_size, max_buckets);
- /* Round it down to a power of 2 */
- hash_size = round_down(hash_size);
+ hash_size = rounddown_pow_of_two(hash_size);
if (init_exception_table(&s->complete, hash_size))
return -ENOMEM;
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://crashcourse.ca
========================================================================
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
