• David Sterba's avatar
    btrfs: use raid_attr for minimum stripe count in btrfs_calc_avail_data_space · e1ea2bee
    David Sterba authored
    Minimum stripe count matches the minimum devices required for a given
    profile. The open coded assignments match the raid_attr table.
    What's changed here is the meaning for RAID5/6. Previously their
    min_stripes would be 1, while newly it's devs_min. This however shold be
    the same as before because it's not possible to create filesystem on
    fewer devices than the raid_attr table allows.
    There's no adjustment regarding the parity stripes (like
    calc_data_stripes does), because we're interested in overall space that
    would fit on the devices.
    Missing devices make no difference for the whole calculation, we have
    the size stored in the structures.
    Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>