ztest_range_lock
rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
zgd->zgd_lr = (struct locked_range *)ztest_range_lock(zd,
zgd->zgd_lr = (struct locked_range *)ztest_range_lock(zd,
rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);