sg_chain(9)

💅 sg_chain(9) — the Kernel API Manual, but make it make sense

okay so bestie, this is a page from the kernel API manual (that's the 9 in sg_chain(9), iykyk) and honestly? it's short, it's sweet, and it ate. let's get into it ✨

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🌸 NAME 🌸

sg_chain — chain two sglists together 🫶

that's literally the whole vibe. two scatterlists walk in, one longer scatterlist walks out.

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✨ SYNOPSIS ✨

void sg_chain (struct scatterlist *prv , unsigned int prv_nents , struct scatterlist *sgl );

no return value, no drama, just vibes and pointers 💅

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🎀 ARGUMENTS 🎀

• prv — the first scatterlist. the main character of this operation 🌟
• prv_nents — the number of entries in prv. yes, you have to tell it. no, it can't just know 😭
• sgl — the second scatterlist. the one getting linked up 🔗

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🦋 DESCRIPTION 🦋

so here's the tea: sg_chain links prv and sgl together, and the whole point is that they form a longer scatterlist. that's it. that's the function. iconic behaviour honestly 👑

bestie, that's genuinely the entire description. no cap, no secret extra lore. short king of a manpage 🙈

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🔥 SEE ALSO 🔥

• the kernel file ./tools/virtio/linux/scatterlist.h — go read it, it's giving source material 📖
• sg_assign_page(9)
• sg_set_page(9)
• sg_mark_end(9)
• sg_unmark_end(9)

all the scatterlist besties, together in one place 🫶✨

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aaaand that's the page!! 💖 this came from ./tools/virtio/linux and it's dated October 2026, so go forth and chain those sglists, bestie — you're gonna slay 🎀🌈⭐