pdc_fill_sg(9)

💖 pdc_fill_sg(9) — Fill PCI IDE PRD table 💖

okay bestie, welcome to the Kernel API Manual page for pdc_fill_sg(9). This one is short and sweet, and it’s giving “do one job correctly” energy. 🎀

✨ NAME ✨

pdc_fill_sg — fills the PCI IDE PRD table. periodt. 💅

🌸 SYNOPSIS 🌸

void pdc_fill_sg (struct ata_queued_cmd *qc );

🎀 ARGUMENTS 🎀

• qc — the metadata associated with the taskfile that’s going to be transferred. 🫶

🔥 DESCRIPTION 🔥

So here’s the vibe: this function fills the PCI IDE PRD (scatter-gather) table with the segments associated with the current disk command. The way it’s just doing exactly that and nothing else? iconic. Then it makes sure the hardware does not choke on it. No cap, that’s the whole assignment. 😭

🔒 LOCKING: spin_lock_irqsave(host lock)

That locking line is literally right there: spin_lock_irqsave(host lock). Don’t forget it, bestie. 💀

🦋 SEE ALSO 🦋

• Kernel file ./drivers/ata/sata_promise.c — go read it, iykyk. 📖✨

okay that’s the page! bye bestie 💖 — source/version: ./drivers/ata, date: October 2026, page: pdc_fill_sg(9). 🌈👑