Btrfs: Allow tree blocks larger than the page size

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 39a1435c68f1..5c4370f3a5b8 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -303,10 +303,12 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
         struct btrfs_root *root = btrfs_sb(dentry->d_sb);
         struct btrfs_super_block *disk_super = &root->fs_info->super_copy;
+        int bits = dentry->d_sb->s_blocksize_bits;
 
         buf->f_namelen = BTRFS_NAME_LEN;
-        buf->f_blocks = btrfs_super_total_blocks(disk_super);
-        buf->f_bfree = buf->f_blocks - btrfs_super_blocks_used(disk_super);
+        buf->f_blocks = btrfs_super_total_bytes(disk_super) >> bits;
+        buf->f_bfree = buf->f_blocks -
+                (btrfs_super_bytes_used(disk_super) >> bits);
         buf->f_bavail = buf->f_bfree;
         buf->f_bsize = dentry->d_sb->s_blocksize;
         buf->f_type = BTRFS_SUPER_MAGIC;