raw_atomic_f..._dec_relaxed(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 raw_atomic_f..._dec_relaxed(9) — Kernel API Manual 🌸

okay bestie, buckle up 💖 this is a page from the Kernel API Manual, and it's about one very specific little function: raw_atomic_fetch_dec_relaxed. yes, the name is a mouthful. no, we're not skipping any of it. periodt.

✨ NAME ✨

raw_atomic_fetch_dec_relaxed — atomic decrement with relaxed ordering 🎀

✨ SYNOPSIS ✨

int raw_atomic_fetch_dec_relaxed (atomic_t *v );

✨ ARGUMENTS ✨

  • v — pointer to atomic_t 🫶 that's the thing we're about to nudge down by one.

✨ DESCRIPTION ✨

so the whole vibe is this: it atomically updates v to (v - 1) with relaxed ordering. atomically means nobody can catch it mid-decrement — it's giving main character energy, one clean unbroken operation ✨

also, it's safe to use in noinstr code. but like... prefer atomic_fetch_dec_relaxed elsewhere, okay? iykyk 💅

✨ RETURN ✨

it hands you back the original value of v — like, the value from before the decrement. no cap, that's the whole return 🦋

✨ SEE ALSO ✨

first up, the file itself lives at <pink>./include/linux/atomic/atomic-arch-fallback.h</pink> — that's where the magic is, bestie 🌈

the 32-bit atomic_t girlies 💜

and the 64-bit atomic64 squad 👑

okay that's literally everyone 🫶 this page came from <purple>./include/linux/atomic</purple>, and it's dated October 2026 — so, like, mark your calendars bestie 🗓️✨ go decrement something responsibly, mwah 💋🎀

📦 where this page comes from