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>

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index a1a76b2..caa5bcc 100644 (file)
--- 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();