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btrfs: move block_group_item::used to block group

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For unknown reasons, the member 'used' in the block group struct is
stored in the b-tree item and accessed everywhere using the special
accessor helper. Let's unify it and make it a regular member and only
update the item before writing it to the tree.

The item is still being used for flags and chunk_objectid, there's some
duplication until the item is removed in following patches.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2019-10-23 18:48:11 +02:00
parent 34b127aecd
commit bf38be65f3
11 changed files with 42 additions and 34 deletions
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4
fs/btrfs/volumes.c
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@@ -3189,7 +3189,7 @@ static int chunk_usage_range_filter(struct btrfs_fs_info *fs_info, u64 chunk_off
int ret = 1;
cache = btrfs_lookup_block_group(fs_info, chunk_offset);
chunk_used = btrfs_block_group_used(&cache->item);
chunk_used = cache->used;
if (bargs->usage_min == 0)
user_thresh_min = 0;
@@ -3220,7 +3220,7 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info,
int ret = 1;
cache = btrfs_lookup_block_group(fs_info, chunk_offset);
chunk_used = btrfs_block_group_used(&cache->item);
chunk_used = cache->used;
if (bargs->usage_min == 0)
user_thresh = 1;