Btrfs: Use bitmap_set/clear()
No functional change.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 3af64c6..0e23bba 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1134,15 +1134,13 @@
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 @@
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;