raw_atomic_long_sub_return(9)

📦 version 7.3.1, in nixpkgs unstable

raw_atomic_long_sub_return(9) 💅

okay so we're in the Kernel API Manual, bestie, and this page is all about raw_atomic_long_sub_return. it's giving atomic math with full ordering, and honestly? iconic. ✨

🌸 NAME 🌸

raw_atomic_long_sub_return — atomic subtract with full ordering. periodt. 💖

✨ SYNOPSIS ✨

long raw_atomic_long_sub_return (long i , atomic_long_t *v );

🎀 ARGUMENTS 🎀

  • i — the long value you're subtracting. it's literally the "how much are we taking off?" number. 💸
  • v — a pointer to atomic_long_t. main character energy, fr fr. 🫶

💖 DESCRIPTION 💖

okay so this one atomically updates v to (v - i) with full ordering. no cap, that's the whole vibe. ✨

it's safe to use in noinstr code. but outside of noinstr land, prefer atomic_long_sub_return instead — that's the recommended pick. 💅

🫶 RETURN 🫶

returns the updated value of v — the fresh new number after the subtract. 🎀

👀 SEE ALSO 👀

kernel file: ./include/linux/atomic/atomic-long.h

the whole atomic-long extended universe, fr fr:

mwah 💋 — source/version: ./include/linux/atomic, date: October 2026, and this is the raw_atomic_long_sub_return(9) page. byeee bestie 🎀✨

📦 where this page comes from