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| author | Robert P. J. Day <rpjday@crashcourse.ca> | 2008-02-08 03:10:06 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2008-02-08 03:10:06 +0100 |
| commit | 8defd83084c3ce46d314c038f7c0f0ed7156d6f8 (patch) | |
| tree | c21d30f80f0d991e731ba9a2c1263c5dbe498e6e | |
| parent | dm: table remove unused total (diff) | |
| download | linux-8defd83084c3ce46d314c038f7c0f0ed7156d6f8.tar.xz linux-8defd83084c3ce46d314c038f7c0f0ed7156d6f8.zip | |
dm snapshot: use rounddown_pow_of_two
Since the source file already includes the log2.h header file, it
seems pointless to re-invent the necessary routine.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| -rw-r--r-- | drivers/md/dm-snap.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index cee16fadd9ee..fad84654b045 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; |