btrfs: tweak extent/chunk allocation for space_info sub-space

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Make the extent allocator and the chunk allocator aware of the sub-space.
It now uses BTRFS_SUB_GROUP_DATA_RELOC sub-space for data relocation block
group, and uses BTRFS_SUB_GROUP_TREELOG for metadata tree-log block group.

And, it needs to check the space_info is the right one when a block group
candidate is given. Also, new block group should now belong to the
specified one.

Now that, block_group->space_info is always set before
btrfs_add_bg_to_space_info(), we no longer need to "find" the space_info.
So, rename the variable name to address that as well.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

Naohiro Aota 2025-04-23 11:43:50 +09:00 • committed by David Sterba

parent 9a3023b828

commit cc0517fe77

3 changed files with 31 additions and 18 deletions

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3

fs/btrfs/block-group.c

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14

fs/btrfs/extent-tree.c

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32

fs/btrfs/space-info.c

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