atomic_long_andnot(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 atomic_long_andnot — Kernel API Manual 🎀

okay bestie, so this is the Kernel API Manual page for atomic_long_andnot, and honestly? it's giving short-and-iconic. tiny function, big main character energy. let's get into it 💅

✨ NAME ✨

atomic_long_andnot — atomic bitwise AND NOT, but with relaxed ordering 🦋

like yes it does math on your long, yes it does it atomically, no it is not out here enforcing any extra memory-ordering drama. relaxed. chill. lowkey effortless.

🌸 SYNOPSIS 🌸

void atomic_long_andnot (long i , atomic_long_t *v );

🧚 ARGUMENTS 🧚

  • i — a long value. that's it, that's the whole vibe. it's the thing getting flipped before the AND.
  • v — pointer to atomic_long_t. this is the glow-up target, the value that's actually getting updated.

🔥 DESCRIPTION 🔥

Atomically updates v to (v & ~i) with relaxed ordering ✨

translation bestie: it flips every bit of i, ANDs that against whatever v currently is, and writes the result back — all in one atomic lil move, so nobody else can catch v mid-update. no cap 💖

⚠️ unsafe to use in noinstr code — use raw_atomic_long_andnot there instead. please please please remember this one, it's not a suggestion 🙈

⭐ RETURN ⭐

Nothing. literally nothing. it returns void, it does the thing, it leaves. no value, no receipt, just vibes 🫶

👑 SEE ALSO 👑

Kernel file ./include/linux/atomic/atomic-instrumented.h — and okay the friend group here is huge, so buckle up, i'm listing every single one because i would never do them dirty like that 😭

🌈 the atomic_ besties

💜 the atomic64_ besties

🩷 the atomic_long_ besties (our people!!)

and that's the whole page bestie 🫶 this lil entry lives in ./include/linux/atomic, dated October 2026, so like… future-iconic. go atomically AND-NOT something, be safe in your noinstr code, and slay 💅✨🎀

📦 where this page comes from