vm_normal_folio_pmd(9)

💅 vm_normal_folio_pmd — the vm_normal_folio_pmd(9) glow-up

okay so bestie, this page lives in the Kernel API Manual and it's here to teach you how to get the struct folio that's hanging out with a PMD. it's short, it's sweet, it slays, let's go 🫶

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✨ SYNOPSIS ✨

struct folio * vm_normal_folio_pmd (struct vm_area_struct *vma ,
unsigned long addr , pmd_t pmd );

like, literally the whole function signature. copy it exactly, don't @ me 💅

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🎀 ARGUMENTS 🎀

• vma — the VMA that's mapping the pmd. she's the vibe container 🦋
• addr — the address where the pmd is mapped. the where, iykyk 📍
• pmd — the PMD. that's it, that's the argument 🔥

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🌸 DESCRIPTION 🌸

so what does she actually do? she gets the struct folio associated with a PTE 💖

and for the deets on what counts as a "normal" mapping vs. a "special" mapping — like, the whole lore — go peek at __vm_normal_page. that's where the details live, no cap ✨

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👑 RETURN 👑

• returns the struct folio if this is a "normal" mapping 🎀
• returns NULL if this is a "special" mapping 💀

that's the whole return contract, periodt.

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🌈 SEE ALSO 🌈

Kernel file ./mm/memory.c — and bestie, the friend group is huge, here's everyone:

• free_pgd_range(9), free_pgtables(9), __vm_normal_page(9), vm_normal_page(9), vm_normal_folio(9), vm_normal_page_pmd(9), vm_normal_page_pud(9), restore_exclusive_pte(9), cond_install_uffd_wp_ptes(9), zap_vma_for_reaping(9), unmap_vmas(9), zap_vma_range_batched(9), zap_vma_range(9), zap_special_vma_range(9), vm_insert_pages(9), vm_insert_page(9), vm_map_pages(9), vm_map_pages_zero(9), vmf_insert_pfn_prot(9), vmf_insert_pfn(9), remap_pfn_range(9), vm_iomap_memory(9), __vmf_anon_prepare(9), finish_mkwrite_fault(9), unmap_mapping_folio(9), unmap_mapping_pages(9), unmap_mapping_range(9), set_pte_range(9), finish_fault(9), mm_account_fault(9), follow_pfnmap_start(9), follow_pfnmap_end(9), generic_access_phys(9), access_remote_vm(9), copy_remote_vm_str(9), folio_zero_user(9)

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ngl that SEE ALSO section is giving "added everyone in the group chat" energy 😭 but every single one of them is invited, so. 🧚

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and that's the whole page, bestie! this one came out of ./mm and it's dated October 2026, still signing off as vm_normal_folio_pmd(9) — stay normal (mapping), stay iconic 👑💖