dm_bitset_cursor_begin
r = dm_bitset_cursor_begin(&cmd->discard_info, cmd->discard_root,
r = dm_bitset_cursor_begin(&cmd->dirty_info, cmd->dirty_root,
r = dm_bitset_cursor_begin(&cmd->dirty_info, cmd->dirty_root,
r = dm_bitset_cursor_begin(&cmd->bitset_info, cmd->bitset_root, cmd->nr_regions, &c);
EXPORT_SYMBOL_GPL(dm_bitset_cursor_begin);
int dm_bitset_cursor_begin(struct dm_disk_bitset *info,