From be8959b44e8d70ca28173a5f2b7eafb0cda47c5d Mon Sep 17 00:00:00 2001
From: "Robert P. J. Day" <rpjday@crashcourse.ca>
Date: Fri, 8 Feb 2008 02:10:06 +0000
Subject: [PATCH] --- yaml --- r: 84562 b: refs/heads/master c:
 8defd83084c3ce46d314c038f7c0f0ed7156d6f8 h: refs/heads/master v: v3

---
 [refs]                     |  2 +-
 trunk/drivers/md/dm-snap.c | 13 +------------
 2 files changed, 2 insertions(+), 13 deletions(-)

diff --git a/[refs] b/[refs]
index 35003fe37db5..18e39cf49e62 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 82d601dc076deb5f348cc3a70f57248bc976ae0c
+refs/heads/master: 8defd83084c3ce46d314c038f7c0f0ed7156d6f8
diff --git a/trunk/drivers/md/dm-snap.c b/trunk/drivers/md/dm-snap.c
index cee16fadd9ee..fad84654b045 100644
--- a/trunk/drivers/md/dm-snap.c
+++ b/trunk/drivers/md/dm-snap.c
@@ -333,16 +333,6 @@ static int calc_max_buckets(void)
 	return mem;
 }
 
-/*
- * 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.
  */
@@ -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;