page_pool_put_full_page(9)

📦 version 7.3.1, in nixpkgs unstable

💅 page_pool_put_full_page — the kernel API manual, but make it make sense

okay so bestie, welcome to page_pool_put_full_page(9) — yes that whole mouthful is the name, we're not abbreviating, we're not skipping it, we're doing this properly. It lives in the Kernel API Manual and honestly? it's iconic.

✨ SYNOPSIS ✨

void page_pool_put_full_page (struct page_pool *pool , struct page *page
, bool allow_direct );

that's the whole signature, no cap. void return, so it's giving "I do the work and I don't report back" energy. 💅

🫶 ARGUMENTS 🫶

  • pool — the pool your page came from, like, its home base 🏠. This is the struct page_pool *, the one that allocated the page in the first place.
  • page — the actual page you're dropping a reference on (struct page *). This is the main character of the operation ngl.
  • allow_direct — a bool that says the release is happening by the consumer, and that you're allowing lockless caching. so like... let it be fast, let it be free, no locks, we trust the vibes ✨.

🌸 DESCRIPTION 🌸

So here's the tea: this one is super similar to page_pool_put_page — like, cousins, same family, same energy — but it also does a DMA sync over the entire memory area, exactly as configured in page_pool_params.max_len. 🦋

So the difference is literally just that full-area DMA sync. Everything else? Same vibe, same job, same "release a reference on a page pool page" mission. periodt. 💖

👑 SEE ALSO 👑

go read these next, bestie, they're all in the same friend group:

that's thirteen references, I counted, and I'm not leaving a single one out because every one of them ate 🔥

💀 reminder that this is a void function — it doesn't return an exit status or anything, so don't go looking for a return value, it's not there, it's not coming, we've moved on.

🌈 alright that's the whole page, mwah 💋 — this one's from the kernel docs tree at ./include/net/page_pool, dated October 2026, and it's page_pool_put_full_page(9) signing off. drink water, sync your DMA, love u bye 🎀

📦 where this page comes from