kfifo_is_em...ed_noirqsave(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

kfifo_is_empty_spinlocked_noirqsave — so bestie, this one returns true if the fifo is empty, and it uses a spinlock for locking, and it doesn't disable interrupts. That's the whole vibe. 🫶

(Also hi, welcome to the Kernel API Manual ✨ — this is the page for kfifo_is_em...ed_noirqsave(9), yes the name is abridged with the dots and no, we don't make the rules.)

✨ SYNOPSIS ✨

kfifo_is_empty_spinlocked_noirqsave (fifo , lock );

Like, that's it. Two things. You pass them in, it tells you if the fifo's empty. Iconic minimalism. 🎀

🦋 ARGUMENTS 🦋

  • fifo — address of the fifo to be used. It's a fifo, it's an address, you point at it, that's the situation. 📍
  • lock — spinlock to be used for locking. Gotta bring your own lock, we are not providing one, that's a you problem (affectionately). 🔒
no cap: the _noirqsave in the name is doing real work here — this variant doesn't disable interrupts. So like, be normal about where you call it, okay? 😭

👑 SEE ALSO 👑

Okay so this is the part where the manpage goes feral and lists basically the entire cast of the kfifo cinematic universe 🌈 — main character energy from top to bottom:

Like, go read all of them, I'll wait. 💜

mwah 💋 that's a wrap — this page lives in ./include/linux, dated October 2026, and it's serving you straight from the Kernel API Manual. drink water, lock your spinlocks, and stay empty (the fifo, not you) 🧚💖

📦 where this page comes from