bvec_virt(9)

💅 bvec_virt(9) — from the Kernel API Manual, bestie ✨

okay so picture this: you're deep in kernel land, you've got a struct bio_vec in your hot little hands, and you just want the virtual address for it. That's the whole gig. This is bvec_virt(9), straight out of the Kernel API Manual, and honestly? iconic. 🎀

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✨ NAME ✨

bvec_virt — returns the virtual address for a bvec. that's it. that's the function. 🫶

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🌸 SYNOPSIS 🌸

void * bvec_virt (struct bio_vec *bvec );

like, verbatim, no cap. one pointer in, one pointer out. 💅

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🦋 ARGUMENTS 🦋

• bvec — the bvec you want the virtual address for. that's the one. hand it over, bestie. 💖

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⭐ NOTE ⭐

⚠️ listen up because this part is important: the caller must ensure that bvec->bv_page is not a highmem page. not me stressing about this on your behalf 😭 — that check is your job, not the function's. do not skip it. periodt.

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🔥 SEE ALSO 🔥

so there's a whole little friend group here, and you should absolutely meet all of them:

• 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)
• bvec_kmap_local(9)
• memcpy_from_bvec(9)
• memcpy_to_bvec(9)
• memzero_bvec(9)
• bvec_phys(9)

all in the same clique, all doing their own cute little thing. go read them. iykyk. 🌈

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mwah 💜 that's the whole page! this lil gem lives in ./include/linux, it's dated October 2026, and it answers to the name bvec_virt(9) — take care of it, she's iconic. 👑✨