vma_is_cow_mapping(9)

✨ NAME ✨

okay so bestie, welcome to the vma_is_cow_mapping(9) page from the Kernel API Manual 💅 the name is literally vma_is_cow_mapping, and the whole question is “is this VMA a CoW mapping?” — that’s the vibe, that’s the assignment, no cap. 🎀

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🦋 SYNOPSIS 🦋

here’s the exact signature, character for character, because we do not play about code:

bool vma_is_cow_mapping (const struct vm_area_struct *vma );

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🎀 ARGUMENTS 🎀

• vma — the VMA to check. that’s it, that’s the whole argument list, and honestly she ate. 👑

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🌸 DESCRIPTION 🌸

See vma_flags_is_cow_mapping for details. yes bestie, this page is literally pointing you at the other one for the full lore — go read that, iykyk. ✨

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💖 RETURN 💖

It returns true if the VMA is a CoW mapping, otherwise false. that’s the vibe check: CoW mapping? true 🔥 not a CoW mapping? false 💀 periodt.

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/mm.h — and here’s the entire link-up squad, every single one, no skips:

• 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_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_lookup(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)

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byeee 🫶 this cutie is sourced from ./include/linux and the footer date is October 2026 — vma_is_cow_mapping(9) out. 💜✨