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Commit f38b6e75 authored by Li Zefan's avatar Li Zefan
Browse files

Btrfs: Use bitmap_set/clear() 



No functional change.

Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
parent 92c42311

fs/btrfs/free-space-cache.c

+8 −12
Original line number Diff line number Diff line
@@ -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;