raw_atomic_..._and_release(9)

📦 version 7.3.1, in nixpkgs unstable

💅 raw_atomic_..._and_release(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this is the page for raw_atomic_long_fetch_and_release, and honestly? it's giving "small function, big responsibilities" 🎀. Full name in the header is raw_atomic_..._and_release(9) (yes the ... is literally part of the page name, iykyk 🦋), and the whole thing lives over at ./include/linux/atomic.

🌸 NAME 🌸

raw_atomic_long_fetch_and_release — atomic bitwise AND, but with release ordering, periodt 💅

✨ SYNOPSIS ✨

long raw_atomic_long_fetch_and_release (long i , atomic_long_t *v );

🫶 ARGUMENTS 🫶

  • i — a long value. just a long. that's the whole vibe 💜
  • v — pointer to an atomic_long_t 👑

🦋 DESCRIPTION 🦋

So here's the tea ☕: it atomically updates v to (v & i) with release ordering 🔥. Atomically, bestie — nobody gets to see a half-done bitwise AND, no cap.

Also it's safe to use in noinstr code — which is a whole flex 🧚. But literally everywhere else, prefer atomic_long_fetch_and_release instead. like, the non-raw one. that's your main character. this one is for the special noinstr situations only 💀

🌈 RETURN 🌈

The original value of v — yes, the value from before the AND happened. a little time capsule 🎀

👑 SEE ALSO 👑

Kernel file ./include/linux/atomic/atomic-long.h — go read it, it's iconic 📖✨

And now the full friend group, everybody say hi 🫶:

and that's the whole page bestie, you ate that 💅 mwah 🫶

source file ./include/linux/atomic, dated October 2026, page raw_atomic_..._and_release(9) — ok bye, go AND some bits, love u 💖✨

📦 where this page comes from