iov_iter_extract_will_pin(9)

💅 NAME 💅

okay so bestie, this is the iov_iter_extract_will_pin(9) page from the Kernel API Manual. It's literally here to indicate how pages from the iterator will be retained — that's the whole assignment, no cap. 🫶

✨ SYNOPSIS ✨

bool iov_iter_extract_will_pin (const struct iov_iter *iter );

🎀 ARGUMENTS 🎀

• iter — the iterator. That's it. That's the argument. She's the main character here. 👑

🌸 DESCRIPTION 🌸

so you examine the iterator, right? then you return true or false to tell everyone how — or whether — pages extracted from the iterator are gonna be retained by the extraction function. vibe check via return value, basically. 😌

true means the pages will have a pin placed in them, and the caller must unpin them. This is a must for DMA/async DIO: it forces fork to forcibly copy a page for the child (because the parent must retain the original page). pin drama, but make it necessary. 🔥

false means no measures are taken, and it's fully up to the caller to retain the pages. no pin, no promises, you're on your own bestie. 💀

🦋 SEE ALSO 🦋

• Kernel file ./include/linux/uio.h

that's the whole page, bestie. it lives under ./include/linux, dated October 2026, and the page title is iov_iter_extract_will_pin(9) — periodt. 💖✨