lwq_empty(9)

🦋 lwq_empty(9) 🦋

okay bestie, this one is straight from the Kernel API Manual — it's lwq_empty(9), aka the vibe check for an lwq. ✨

🌸 NAME 🌸

lwq_empty — test if lwq contains any entry 👀

🎀 SYNOPSIS 🎀

bool lwq_empty (struct lwq *q );

💖 ARGUMENTS 💖

• q — the lwq object 🫶

✨ DESCRIPTION ✨

The way that this empty test is packing an acquire barrier 💅 — yes, on purpose — is so that if a wakeup is sent when lwq_dequeue returns true, it is safe to go to sleep after a test on lwq_empty. that's the important bit, bestie 🫡

👑 SEE ALSO 👑

• Kernel file: ./include/linux/lwq.h
• lwq_init(9)
• lwq_dequeue(9)
• lwq_for_each_safe(9)
• lwq_enqueue(9)
• lwq_enqueue_batch(9)

made with 💖 from source/version ./include/linux · date: October 2026 · page: lwq_empty(9) 🎀