folio_mk_pud(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME

folio_mk_pud — okay so this is the one that Creates a PUD for this folio, and yes bestie that's a capital-P PUD, we'll get into it 💅

Welcome to the Kernel API Manual, bestie!! This page is the whole vibe check on folio_mk_pud, and it's genuinely so much smaller than the SEE ALSO list at the bottom, which is sending me 😭

✨ SYNOPSIS

pud_t folio_mk_pud (const struct folio *folio , pgprot_t pgprot );

Two args, one return, one page-table-entry-shaped icon. Slay.

🎀 ARGUMENTS

  • folio — The folio to create a PUD for. Like, this folio. Your main character folio. 👑
  • pgprot — The page protection bits to use. It's giving "what's allowed to touch this memory" energy, and the kernel is very serious about it fr fr.

🦋 DESCRIPTION

So here's the tea ☕: folio_mk_pud creates a page table entry for the first page of this folio. Just the first one — not all of them, not the whole squad, just page one.

And the reason it does that is because the resulting entry is suitable for passing to set_pud_at. That's it. That's the whole job. Lowkey elegant, highkey iconic. 🦋

No cap, it literally just builds the entry and hands it to you — what you do with set_pud_at afterward is your business 💅

🌸 RETURN

A page table entry suitable for mapping this folio. That's the whole return value, bestie — a pud_t ready to go, no drama, no surprises. 🫶

🌈 SEE ALSO

Kernel file ./include/linux/mm.h — and then the actual guest list, which is long. Like, this function knows everybody at the party:

Like I said. Everybody. 💀

And that's the page!! This little cutie lives in ./include/linux and bestie it's dated October 2026 — mark your calendars, the folio_mk_pud era is upon us 🎀✨💜

📦 where this page comes from