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btrfs: migrate the block group lookup code

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Move these bits first as they are the easiest to move.  Export two of
the helpers so they can be moved all at once.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minor style updates ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
2019-06-20 15:37:45 -04:00
committed by David Sterba
parent aac0023c21
commit 2e405ad842
5 changed files with 105 additions and 98 deletions
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7
fs/btrfs/block-group.h
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@ -151,4 +151,11 @@ static inline int btrfs_should_fragment_free_space(
}
#endif
struct btrfs_block_group_cache *btrfs_lookup_first_block_group(
struct btrfs_fs_info *info, u64 bytenr);
struct btrfs_block_group_cache *btrfs_lookup_block_group(
struct btrfs_fs_info *info, u64 bytenr);
struct btrfs_block_group_cache *btrfs_next_block_group(
struct btrfs_block_group_cache *cache);
#endif /* BTRFS_BLOCK_GROUP_H */