kfifo_out_peek(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

okay so this is the manual page for kfifo_out_peek(9) — Kernel API Manual bestie edition 💅 and the one-liner is literally: kfifo_out_peek — gets some data from the fifo. No cap, that's the whole vibe check.

✨ SYNOPSIS ✨

kfifo_out_peek (fifo , buf , n );

🎀 ARGUMENTS 🎀

  • fifo — the address of the fifo to be used. That's your little fifo homegirl 🫶
  • buf — pointer to the storage buffer. This is where the copied data lands, bestie 💖
  • n — max. number of elements to get. Like, the upper limit, periodt ✨

🌸 DESCRIPTION 🌸

This macro gets the data from the fifo and returns the numbers of elements copied. The data is not removed from the fifo — it's giving peek-only, not pop-and-drop 💅

heads up, bestie: note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these macro. That's the whole lock-free iykyk moment ✨

🦋 SEE ALSO 🦋

Kernel file ./include/linux/kfifo.h — and the whole kfifo squad, no cap:

byeee 🌈 source/version: ./include/linux · date: October 2026 · page: kfifo_out_peek(9) 💖

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