FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-23 01:40:30 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Btrfs: Use bitmap_set/clear()

Browse Source 
No functional change.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
This commit is contained in:
Li Zefan 2011-03-14 13:40:51 +08:00
parent 92c4231181
commit f38b6e754d
1 changed files with 8 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
fs/btrfs/free-space-cache.c
View File

@ -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;