diff options
| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-03-14 13:40:51 +0800 |
|---|---|---|
| committer | Li Zefan <lizf@cn.fujitsu.com> | 2011-04-25 16:46:01 +0800 |
| commit | f38b6e754d8cc4605ac21d9c1094d569d88b163b (patch) | |
| tree | 7aec7cc9a9d68f1e7ce97771500c63151a1b2319 /fs/btrfs/free-space-cache.c | |
| parent | 92c423118105e1c8c1587367a26eeb3277bda89a (diff) | |
Btrfs: Use bitmap_set/clear()
No functional change.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs/btrfs/free-space-cache.c')
| -rw-r--r-- | fs/btrfs/free-space-cache.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 3af64c6ea9d..0e23bbabbba 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1134,15 +1134,13 @@ static void bitmap_clear_bits(struct btrfs_block_group_cache *block_group, struct btrfs_free_space *info, u64 offset, u64 bytes) { - unsigned long start, end; - unsigned long i; + unsigned long start, count; start = offset_to_bit(info->offset, block_group->sectorsize, offset); - end = start + bytes_to_bits(bytes, block_group->sectorsize); - BUG_ON(end > BITS_PER_BITMAP); + count = bytes_to_bits(bytes, block_group->sectorsize); + BUG_ON(start + count > BITS_PER_BITMAP); - for (i = start; i < end; i++) - clear_bit(i, info->bitmap); + bitmap_clear(info->bitmap, start, count); info->bytes -= bytes; block_group->free_space -= bytes; @@ -1152,15 +1150,13 @@ static void bitmap_set_bits(struct btrfs_block_group_cache *block_group, struct btrfs_free_space *info, u64 offset, u64 bytes) { - unsigned long start, end; - unsigned long i; + unsigned long start, count; start = offset_to_bit(info->offset, block_group->sectorsize, offset); - end = start + bytes_to_bits(bytes, block_group->sectorsize); - BUG_ON(end > BITS_PER_BITMAP); + count = bytes_to_bits(bytes, block_group->sectorsize); + BUG_ON(start + count > BITS_PER_BITMAP); - for (i = start; i < end; i++) - set_bit(i, info->bitmap); + bitmap_set(info->bitmap, start, count); info->bytes += bytes; block_group->free_space += bytes; |