btrfs: fix wrong data space statistics

Josef has implemented mixed data/metadata chunks, we must add those chunks'
space just like data chunks.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index a1a76b2a61f9..caa5bcc62f16 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -790,11 +790,10 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 
         rcu_read_lock();
         list_for_each_entry_rcu(found, head, list) {
-                if (found->flags & (BTRFS_BLOCK_GROUP_METADATA |
-                                    BTRFS_BLOCK_GROUP_SYSTEM))
-                        total_used_data += found->disk_total;
-                else
+                if (found->flags & BTRFS_BLOCK_GROUP_DATA)
                         total_used_data += found->disk_used;
+                else
+                        total_used_data += found->disk_total;
                 total_used += found->disk_used;
         }
         rcu_read_unlock();