1 00000004 D _unix_io_manager libext2fs unix_io
2 00000004 D _test_io_manager libext2fs test_io
3 00000004 D _test_io_backing_manager libext2fs test_io
4 00000004 D _test_io_cb_read_blk libext2fs test_io
5 00000004 D _test_io_cb_write_blk libext2fs test_io
6 00000004 D _test_io_cb_set_blksize libext2fs test_io