bvec_kmap_local(9)

✨ bvec_kmap_local(9) ✨

okay so we're in the Kernel API Manual bestie, and today's main character is bvec_kmap_local 🎀

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💖 NAME 💖

bvec_kmap_local — map a bvec into the kernel virtual address space

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🦋 SYNOPSIS 🦋

void * bvec_kmap_local (struct bio_vec *bvec );

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🌸 ARGUMENTS 🌸

• bvec — the bvec you wanna map, like literally the one, that's her 💅

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🔥 DESCRIPTION 🔥

okay so listen: bvec_kmap_local maps a bvec into the kernel virtual address space, and that's the whole vibe ✨

but here's the thing — must be called on single-page bvecs only 🙈 like do NOT come at her with a multi-page bvec, she will not be doing that, no cap 🫶

and when you're done? call kunmap_local on the returned address to unmap it. that's it. that's the whole relationship. map, then unmap. balanced. iconic. periodt 💀

fr fr do not forget the kunmap_local, bestie 😭 the whole point is you clean up after yourself

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/bvec.h
• struct bio_vec(9)
• bvec_set_page(9)
• bvec_set_folio(9)
• bvec_set_virt(9)
• bvec_folio(9)
• memcpy_from_bvec(9)
• memcpy_to_bvec(9)
• memzero_bvec(9)
• bvec_virt(9)
• bvec_phys(9)

like the whole bvec friend group honestly, go say hi 👑💜

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and that's the page!! mwah 💋 this one lives in ./include/linux, dated October 2026, and yeah — it's bvec_kmap_local(9) signing off 🧚‍♀️⭐ go map responsibly bestie, ily 🍓