set_pte_range(9)

🎀 set_pte_range — the kernel API manual, bestie edition 🎀

okay so real talk: this one lives in the Kernel API Manual, section 9, and it's called set_pte_range. Buckle up, it's giving page-table glow-up ✨

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🌸 NAME 🌸

set_pte_range — literally sets a whole range of PTEs so they point at pages inside one folio. no cap, that's the whole vibe 💅

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🦋 SYNOPSIS 🦋

void set_pte_range (struct vm_fault *vmf , struct folio *folio , struct
page *page , unsigned int nr , unsigned long addr );

look at her. iconic signature. let's break down every single piece 🫶

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💖 ARGUMENTS 💖

• vmf — the fault description. yep, the whole fault situation, described 💫
• folio — the folio that contains page. she's the big container energy 👑
• page — the first page you're making a PTE for. like, the beginning of the era 🌅
• nr — how many PTEs you wanna create. the count. the quantity. the amount, periodt 🔢
• addr — the first address you're making a PTE for. starting point, main character address 💅

ngl, remember page is the first page and addr is the first address — those "first"s are doing heavy lifting so don't skip 'em 🙈

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🌈 SEE ALSO 🌈

okay this is the part where she name-drops everyone. it's in the kernel file ./mm/memory.c, and the whole friend group is:

• 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_folio_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)
• 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)

that's the whole squad, bestie. iykyk 🧚💜

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✨ cute little sign-off ✨ this page is from the ./mm source tree and it's dated October 2026 — so yeah, she's future-fresh, and the manual name is set_pte_range, section 9, one more time for the people in the back 🍓💖🦋