I'm not seeing that in what you quote -- I see references to holy books (not listed) but no indication that the OT Jews even had a notion of canonicity in the required sense.
Correct. First Christians have no clue what 1st century Judaims was or what modern Judiams is. Second, Jewish scripture has been "canonized" from the very start because the only sacred books in the whole so-called "Old Testament" (Tanakh) are the five books of Moses, believed to be the Torah (or teaching) that was 'written' by God himself before the world existed. It is eternal and it cannot be fulfilled. It is the only part of the Jewish Bible that, when read, everyone stands. The rest of the Jewish Bible is secondary and only repeats what the Torah has already said. So, there was no need or urgency or desire to close the "canon," because THE canon is closed eternally. There is but one canon in Judaism and that is the Torah. Everything esle is only a repetition.
“From the blood of Abel to the blood of Zechariah, who perished between the altar and the house of God; yes, I tell you, it shall be charged against this generation,’” (Luke 11:51).
“The traditional Jewish canon was divided into three sections (Law, Prophets, Writings), and an unusual feature of the last section was the listing of Chronicles out of historical order, placing it after Ezra-Nehemiah and making it the last book of the canon. In light of this, the words of Jesus in Luke 11:50-51 reflect the settled character of the Jewish canon (with its peculiar order) already in his day. Christ uses the expression “from the blood of Abel to the blood of Zechariah,” which appears troublesome since Zechariah was not chronologically the last martyr mentioned in the Bible (cf. Jer. 26:20-23). However, Zechariah is the last martyr of which we read in the Old Testament according to Jewish canonical order (cf. II Chron. 24:20-22), which was apparently recognized by Jesus and his hearers.”
http://webcache.googleusercontent.com/search?q=cache:7i66KyR1jUQJ:carm.org/apocrypha-it-scripture+Jesus+knew+the+beginning+and+end+of+the+Jewish+canon&cd=1&hl=en&ct=clnk&gl=us&client=safari