Can't select tasks by inline field?

[TangentFoxy]

I'm trying to sort tasks using Dataview so it doesn't matter where they appear in my vault. For example, within one note I have:

- [ ] [reading-list:: Book by Author]
- [ ] Brush teeth.
- [ ] [wishlist:: New phone.]

Now to query for only my reading list, I assume the following will work:

TASK
WHERE reading-list

Instead, all tasks on any note that has the field reading-list anywhere within it show up. As far as I understand, this is because fields are treated both as metadata for the whole page and for the tasks individually, but I can't figure out how to make the query I'm to filter based on the tasks themselves (I assumed that would be the default tbh).