This aids in debugging, so that we can use the same infrastructure to
walk zfs's list_t in the kernel module and in the userland libraries
(e.g. when debugging ztest).
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes#10236
5d4ed9614f