raw_atomic_...dnot_release(9)

📦 version 7.3.1, in nixpkgs unstable

💅 raw_atomic_...dnot_release — Kernel API Manual ✨

hiii bestie 🫶 welcome to the Kernel API Manual, section 9 — this is the page for raw_atomic_fetch_andnot_release, aka the atomic bitwise AND NOT girly with release ordering energy. she's a raw atomic, she's lowkey niche, and she's about to eat. let's get into it 💖

✨ NAME ✨

raw_atomic_fetch_andnot_release — atomic bitwise AND NOT with release ordering 🌸

🫶 SYNOPSIS 🫶

int raw_atomic_fetch_andnot_release (int i , atomic_t *v );

🎀 ARGUMENTS 🎀

  • i — int value. yes queen, the mask thingy you're and-not-ing with 🎀
  • v — pointer to atomic_t. the atomic she's operating on, main character energy 👑

💅 DESCRIPTION 💅

okay so the way this works is: it atomically updates v to (v & ~i) — and yeah she's got release ordering on her, so the memory ordering is doing its whole thing. no cap, it's giving synchronized and demure ✨

and here's the tea bestie: it's safe to use in noinstr code — noinstr girlies, this one's for you 😭 but everywhere else, prefer atomic_fetch_andnot_release instead. like, that's the whole vibe check. raw is the backstage pass, not the front door 💀

⭐ RETURN ⭐

The original value of v — i.e. the value from before she did the update. not the new one. the old one. so you can peek at what she was before the glow-up 🔥

🦋 SEE ALSO 🦋

bestie there's a whole friend group, and honestly they're all iconic. also the kernel file lives right here:

./include/linux/atomic/atomic-arch-fallback.h

she did NOT come alone — here's the full roster 🫶:

ok notice how this page's own name is in that list minus the _release — yeah that's her sister 💅 both valid, both loved.

and now the 64-bit girlies — same energy, bigger numbers, no skips 🦋:

💀 not the 64-bit version of this exact function being in the list. she said "I'm my own reference".

and that's the whole page, bestie 🧚 go forth and and-not responsibly 💜

🌈 sign-off: this lil masterpiece lives in the kernel tree at ./include/linux/atomic, and it's dated October 2026. periodt. 🎀
📦 where this page comes from