Re: [PATCH 4/7] btrfs: zoned: don't account data relocation space-info in statfs free space

[Damien Le Moal <dlemoal@kernel.org>]

On 2026/05/13 21:34, Johannes Thumshirn wrote:
> Don't account the free space in a data relocation space-info sub-group as
> usable free space in statfs.
> 
> This is misleading as no user allocations can be made in this space-info
> sub-group. It is only a target for relocation.
> 
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>

It feels like this one also needs a Fixes tag...

> ---
>  fs/btrfs/super.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index fb15decb0861..a0dbc0d2213f 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -1739,7 +1739,8 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
>  	int mixed = 0;
>  
>  	list_for_each_entry(found, &fs_info->space_info, list) {
> -		if (found->flags & BTRFS_BLOCK_GROUP_DATA) {
> +		if (found->flags & BTRFS_BLOCK_GROUP_DATA &&
> +		    found->subgroup_id != BTRFS_SUB_GROUP_DATA_RELOC) {
>  			int i;
>  
>  			total_free_data += found->disk_total - found->disk_used;


-- 
Damien Le Moal
Western Digital Research