folioq_nr_slots(9)

📦 version 7.3.1, in nixpkgs unstable

✨ folioq_nr_slots(9) — the kernel API manual, bestie edition ✨

okay so real talk, this one is a lil function from the kernel API manual (folioq_nr_slots) and it's lowkey iconic for how much it refuses to be pinned down. let's get into it 💅

🌸 NAME 🌸

folioq_nr_slots — it asks a folio queue segment "how many folios can you hold, bestie?" and honestly the answer might be different every time 😭

🦋 SYNOPSIS 🦋

unsigned int folioq_nr_slots (const struct folio_queue *folioq );

that's it, that's the whole vibe check — it takes one arg and hands you back an unsigned int ✨

🎀 ARGUMENTS 🎀

  • folioq — the segment we're querying. like, the specific one. the main character of this call 🫶

💖 DESCRIPTION 💖

so what it does: it queries the number of folios that a particular folio queue segment might hold. capacity check, basically 📏

[!] NOTE: this must not be assumed to be the same for every segment! not me warning you about this specifically 😭 like fr fr, do not hardcode one answer and assume every segment is matching. it's giving "each one is unique, respect it" energy. 💀

🌈 SEE ALSO 🌈

kernel file ./include/linux/folio_queue.h and literally the whole folio queue friend group:

go read all of them, iykyk 👑 the whole squad ate 🔥

anyway that's the page, mwah 💋 it lives in ./include/linux and this version is dated October 2026 — go off, bestie, and remember: every segment is a different size, no cap 🧚💜

📦 where this page comes from