refcount_t(9)

💅 refcount_t 💅

okay so this is refcount_t(9) from the Kernel API Manual bestie, and honestly? she's short, she's iconic, she gets straight to the point. no notes. 🎀

✨ NAME ✨

typedef refcount_t

a variant of atomic_t that's specialized for reference counts 🦋 like it's the same family, she just went to a different school and came back with a purpose.

🌸 Description 🌸

okay so the teaaa: this counter saturates at REFCOUNT_SATURATED and once it hits that point it will not move. periodt. she's planted. she's not going anywhere. 🧚

and why do we love her for that? because it avoids wrapping the counter — which, if you didn't know, lowkey causes 'spurious' use-after-free bugs 😭 and those are never the vibe. 💀

so yeah: she maxes out, she stays maxed out, and everyone sleeps better at night. no cap. 🔥

fr fr do not expect her to roll over like a regular counter — the whole point is that she stops at REFCOUNT_SATURATED instead of wrapping around and ruining your whole afternoon 💅

👑 SEE ALSO 👑

• Kernel file ./include/linux/refcount_types.h — go read it, iykyk 💖

and that's the whole page, bestie 🫶 sourced straight from ./include/linux, October 2026, filed under refcount_t(9) — mwah, slay, go count your references responsibly ✨🌈💜