folioq_folio(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 folioq_folio(9) 🌸

okay so bestie, this is the Kernel API Manual page for folioq_folio(9) 💖 it's giving tiny-but-important kernel helper energy, and we're gonna get through it together 🫶

💖 NAME 💖

folioq_folio — get a folio from a folio queue segment ✨

🦋 SYNOPSIS 🦋

struct folio * folioq_folio (const struct folio_queue *folioq , unsigned
       int slot );

🎀 ARGUMENTS 🎀

  • folioq — the segment to access, bestie 💅
  • slot — the folio slot to access ✨

💅 DESCRIPTION 💅

okay so what it does is retrieve the folio in the specified slot from a folio queue segment. iconic. no cap 🦋

but listen 😭 there is no bounds check made. none. zero. so if the slot hasn't been added into yet, the pointer will be undefined — not cute, not safe, literally undefined 💀

and if the slot has been cleared? you get NULL back. that's the whole vibe 🫶

⚠️ no bounds check + undefined pointer if the slot hasn't been added into yet = please be careful, bestie. this is not a drill 💀

🔥 SEE ALSO 🔥

Kernel file ./include/linux/folio_queue.h, plus the whole squad:

that's the page, bestie 🎀 source/version: ./include/linux, dated October 2026 — folioq_folio(9) signing off 💜

📦 where this page comes from