raw_atomic_long_fetch_and(9)

📦 version 7.3.1, in nixpkgs unstable

💅 raw_atomic_long_fetch_and — Kernel API Manual ✨

okay so bestie, we're in the Kernel API Manual today and this one is a lil baddie from the atomic family, no cap 🫶

🌸 NAME 🌸

raw_atomic_long_fetch_and — atomic bitwise AND with full ordering 💖

🎀 SYNOPSIS 🎀

long raw_atomic_long_fetch_and (long i , atomic_long_t *v );

🦋 ARGUMENTS 🦋

  • i — a long value, that's it, that's the whole vibe
  • v — pointer to atomic_long_t, the main character of this whole operation 👑

⭐ DESCRIPTION ⭐

So like, atomically updates v to (v & i) with full ordering. it's giving "bitwise AND but make it safe under concurrency" 💅

it is safe to use in noinstr code — literally built different. but outside of that, prefer atomic_long_fetch_and — that's the general-fave icon, raw_ is the special-occasion one ✨

💜 RETURN 💜

The original value of v — yes, before the AND happened. she gives you the receipts from before the glow-up 😭👑

🔥 SEE ALSO 🔥

the kernel file lives at ./include/linux/atomic/atomic-long.h — go say hi to the source bestie 🧚

and here's the whole friend group, all of them, i'm not doing anyone dirty by skipping them 💀:

and that's the whole page bestie, go AND some bits 💅✨

this lil masterpiece comes to you from ./include/linux/atomic, dated October 2026 — and the page itself is raw_atomic_long_fetch_and(9) 🎀 iykyk 🫶

📦 where this page comes from