vma_lookup(9)

🌸 NAME 🌸

okay so this is vma_lookup from the 9 Kernel API Manual, and it does exactly what it says on the tin: find a VMA at a specific address. That's the whole assignment, bestie. 💖

✨ SYNOPSIS ✨

struct vm_area_struct * vma_lookup (struct mm_struct *mm , unsigned long
addr );

🎀 ARGUMENTS 🎀

• mm — the process address space. This is the mm situation you're working with. 💅
• addr — the user address. The specific address you're asking about. 🎯

💫 RETURN 💫

It returns the vm_area_struct at the given address, or NULL otherwise. So if there's a VMA there, slay; if not, NULL is the answer. 🫶

🔗 SEE ALSO 🔗

Kernel file: ./include/linux/mm.h 🌈

• folio_page_idx(9)
• vma_flag_t(9)
• fault_flag_allow_retry_first(9)
• vma_kernel_pagesize(9)
• folio_order(9)
• folio_reset_order(9)
• folio_mapcount(9)
• folio_mapped(9)
• thp_order(9)
• thp_size(9)
• folio_get(9)
• folio_put(9)
• folio_put_refs(9)
• folios_put(9)
• vma_flags_is_cow_mapping(9)
• vma_is_cow_mapping(9)
• vma_desc_is_cow_mapping(9)
• folio_pfn(9)
• folio_mk_pte(9)
• folio_mk_pmd(9)
• folio_mk_pud(9)
• folio_maybe_dma_pinned(9)
• is_zero_page(9)
• is_zero_folio(9)
• folio_nr_pages(9)
• folio_next(9)
• folio_shift(9)
• folio_size(9)
• folio_maybe_mapped_shared(9)
• folio_expected_ref_count(9)
• zap_vma(9)
• ptdesc_address(9)
• ptdesc_set_kernel(9)
• ptdesc_clear_kernel(9)
• ptdesc_test_kernel(9)
• pagetable_alloc(9)
• pagetable_free(9)
• vma_start_pgoff(9)
• vma_end_pgoff(9)
• vma_last_pgoff(9)
• vma_start_anon_pgoff(9)
• vma_end_anon_pgoff(9)
• vma_last_anon_pgoff(9)
• mmap_action_remap(9)
• mmap_action_remap_full(9)
• mmap_action_ioremap(9)
• mmap_action_ioremap_full(9)
• mmap_action_simple_ioremap(9)
• mmap_action_map_kernel_pages(9)
• mmap_action_map_kernel_pages_full(9)
• range_is_subset(9)
• range_in_vma(9)
• range_in_vma_desc(9)
• clear_pages(9)

byeee 💅 this page's source is ./include/linux, dated October 2026, and yes bestie it's still vma_lookup(9). 🫶✨