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btrfs: zoned: re-flow prepare_allocation_zoned()

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Re-flow prepare allocation zoned to make it a bit more readable by
returning early and removing unnecessary indentations.

This patch does not change any functionality.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2025-12-15 11:38:18 +01:00 committed by David Sterba
parent 3dcdcb7177
commit 4273db18a8
1 changed files with 27 additions and 20 deletions
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47
fs/btrfs/extent-tree.c
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@ -4284,37 +4284,44 @@ static int prepare_allocation_zoned(struct btrfs_fs_info *fs_info,
struct find_free_extent_ctl *ffe_ctl,
struct btrfs_space_info *space_info)
{
struct btrfs_block_group *block_group;
if (ffe_ctl->for_treelog) {
spin_lock(&fs_info->treelog_bg_lock);
if (fs_info->treelog_bg)
ffe_ctl->hint_byte = fs_info->treelog_bg;
spin_unlock(&fs_info->treelog_bg_lock);
} else if (ffe_ctl->for_data_reloc) {
return 0;
}
if (ffe_ctl->for_data_reloc) {
spin_lock(&fs_info->relocation_bg_lock);
if (fs_info->data_reloc_bg)
ffe_ctl->hint_byte = fs_info->data_reloc_bg;
spin_unlock(&fs_info->relocation_bg_lock);
} else if (ffe_ctl->flags & BTRFS_BLOCK_GROUP_DATA) {
struct btrfs_block_group *block_group;
spin_lock(&fs_info->zone_active_bgs_lock);
list_for_each_entry(block_group, &fs_info->zone_active_bgs, active_bg_list) {
/*
* No lock is OK here because avail is monotonically
* decreasing, and this is just a hint.
*/
u64 avail = block_group->zone_capacity - block_group->alloc_offset;
if (block_group_bits(block_group, ffe_ctl->flags) &&
block_group->space_info == space_info &&
avail >= ffe_ctl->num_bytes) {
ffe_ctl->hint_byte = block_group->start;
break;
}
}
spin_unlock(&fs_info->zone_active_bgs_lock);
return 0;
}
if (!(ffe_ctl->flags & BTRFS_BLOCK_GROUP_DATA))
return 0;
spin_lock(&fs_info->zone_active_bgs_lock);
list_for_each_entry(block_group, &fs_info->zone_active_bgs, active_bg_list) {
/*
* No lock is OK here because avail is monotonically
* decreasing, and this is just a hint.
*/
u64 avail = block_group->zone_capacity - block_group->alloc_offset;
if (block_group_bits(block_group, ffe_ctl->flags) &&
block_group->space_info == space_info &&
avail >= ffe_ctl->num_bytes) {
ffe_ctl->hint_byte = block_group->start;
break;
}
}
spin_unlock(&fs_info->zone_active_bgs_lock);
return 0;
}