closure_init(9)

💖 closure_init(9) · Kernel API Manual 💖

okay so bestie, welcome to the closure_init(9) page from the Kernel API Manual — yes it’s short, yes it’s iconic, and yes it’s about setting up a closure without losing the plot. 🫶

🌸 NAME 🌸

closure_init — Initialize a closure, setting the refcount to 1. literally the “new closure, who dis?” moment. ✨

💅 SYNOPSIS 💅

void closure_init (struct closure *cl , struct closure *parent );

🎀 ARGUMENTS 🎀

• cl — closure to initialize. this is the one getting the glow-up. 💅
• parent — parent of the new closure. cl will take a refcount on it for its lifetime; may be NULL. so yes, bestie, NULL is allowed — no cap. 💀

🦋 SEE ALSO 🦋

Kernel file ./include/linux/closure.h — that’s the source file, periodt. The whole linked-friend group:

• closure_sync(9)
• closure_get(9)
• closure_get_not_zero(9)
• closure_wake_up(9)
• continue_at(9)
• closure_return(9)
• continue_at_nobarrier(9)
• closure_return_with_destructor(9)
• closure_call(9)

ngl this one is short and sweet, but every ref is here — read the friends too, iykyk. 💜

source/version: ./include/linux · date: October 2026 — mwah, bye bestie! 🎀🫶