iowait_pio_drain(9)

📦 version 7.3.1, in nixpkgs unstable

💅 iowait_pio_drain(9) — like, the Kernel API Manual page, bestie ✨

okay so this is iowait_pio_drain(9) from the Kernel API Manual, and honestly? it's giving "small function, big responsibility" 🎀

🌸 NAME 🌸

iowait_pio_drain — wait for pios to drain 💧

✨ SYNOPSIS ✨

void iowait_pio_drain (struct iowait *wait );

that's it. that's the whole vibe. one function, one pointer, zero drama 🫶

🦋 ARGUMENTS 🦋

  • wait — the iowait structure, bestie. that's the one you're handing over 💖

🔥 DESCRIPTION 🔥

okay so real talk: this one delays until the iowait pios have completed. that's the whole thing. it just... waits 💀 like it will literally not move on until those pios are done, periodt. no cap, that's the entire behavior — delay, pios complete, we're free 🌈

it's not doing anything cute or extra, it's just sitting there with main character energy until the pios are drained 💅

👑 SEE ALSO 👑

this is the part where the kernel file shows up, so let's give it its flowers 🌸 — Kernel file ./drivers/infiniband/hw/hfi1/iowait.h ✨

and then the full squad, no one left behind 🫶:

iykyk 💜

and that's the page!! sign-off time: it lives in ./drivers/infiniband/hw/hfi1, dated October 2026, and yes it's still called iowait_pio_drain(9) — iconic, we stan 🧚‍♀️⭐🍓

📦 where this page comes from