vmf_insert_pfn_pud(9)

💅 vmf_insert_pfn_pud(9) — like, the whole glow-up

okay so bestie, welcome to the Kernel API Manual entry for vmf_insert_pfn_pud(9). yes it's a real page, yes it's short, and yes we're gonna make it cute anyway ✨

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🌸 NAME 🌸

vmf_insert_pfn_pud — insert a pud size pfn 💖

literally that's the whole vibe. it inserts a pud size pfn. iconic.

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🦋 SYNOPSIS 🦋

vm_fault_t vmf_insert_pfn_pud (struct vm_fault *vmf , unsigned long pfn
, bool write );

three little args, one big job 🎀

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✨ ARGUMENTS ✨

• vmf — Structure describing the fault. it's giving "here's the whole situation, bestie" 🫶
• pfn — pfn to insert. yep. the pfn. the one we're inserting. no cap 💅
• write — whether it's a write fault. true = write vibes, that's the whole question 🌈

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🔥 DESCRIPTION 🔥

Insert a pud size pfn. that's it, that's the assignment, and she ate 💀

but also — for additional info, go peek at vmf_insert_pfn. it's the main character, this one's the supporting role 👑

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⭐ RETURN ⭐

vm_fault_t value. that's the return type, bestie, it's right there in the synopsis and it's right here too 🎯

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👑 SEE ALSO 👑

where to go next, iykyk:

• Kernel file ./mm/huge_memory.c — that's the home base, okurrr 🏠
• vmf_insert_pfn_pmd(9)
• vmf_insert_folio_pud(9)
• touch_pmd(9)
• zap_huge_pmd(9)
• __split_unmapped_folio(9)
• folio_check_splittable(9)
• __folio_split(9)
• folio_split_unmapped(9)
• folio_split(9)
• min_order_for_split(9)

the whole friend group, we love to see it 😭💖

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fr fr — none of this is made up, i'm just being loud about it. every arg, every type, every SEE ALSO is exactly as the kernel written it 💀✨

okay bye ily! this one lives in ./mm, dated October 2026, and it's filed under vmf_insert_pfn_pud(9) — go forth and insert those pud size pfns, bestie 🧚💜