kfifo_in_sp...ed_noirqsave(9)

📦 version 7.3.1, in nixpkgs unstable

💅 kfifo_in_spinlocked_noirqsave — from the Kernel API Manual, bestie 🎀

okay so picture this: you're deep in the kernel, you've got a fifo, you've got a spinlock, and you cannot be out here disabling interrupts. this page is literally your girl. it's kfifo_in_spinlocked_noirqsave(9) and she's here to help you put data into a fifo while locking with a spinlock and not disabling interrupts. no cap. ✨

🌸 NAME 🌸

kfifo_in_spinlocked_noirqsave — put data into fifo using a spinlock for locking, don't disable interrupts 💖

🦋 SYNOPSIS 🦋

kfifo_in_spinlocked_noirqsave (fifo , buf , n , lock );

like. that's the whole vibe. four things, in that order, periodt. 💅

✨ ARGUMENTS ✨

  • fifo — address of the fifo to be used. yes bestie the address, hand her over 🫶
  • buf — the data to be added. this is the actual stuff going in 🎀
  • n — number of elements to be added. count 'em, don't guess 🔢
  • lock — pointer to the spinlock to use for locking. pointer!! not the lock itself, iykyk 🔒

🔥 DESCRIPTION 🔥

so this one is a variant of kfifo_in_spinlocked, okay? the whole personality of this function is that it uses spin_lock/unlock for locking and it doesn't disable interrupts. that's the entire thing. that's the character arc. 😌

if you were looking for the interrupt-disabling experience, this is not that girl — go read the other one. this one keeps interrupts living their best life. ⭐

👑 SEE ALSO 👑

kernel file ./include/linux/kfifo.h — the whole kfifo cinematic universe lives here, and honestly? she ate. highkey obsessed. 🌈

like, read them all. it's giving syllabus. 📚

💀 friendly little vibe check: the whole point of this function is that it does not disable interrupts — so make sure that's actually what you want before you commit, bestie. 🙈

aaaand that's the page!! 🍓 it lives under ./include/linux and the manual's dated October 2026 — so yeah, mark your calendar, this info's literally from the future. 🧚💜 go forth and fifo responsibly, mwah 💋✨

📦 where this page comes from