svc_rdma_en...rite_segment(9)

📦 version 7.3.1, in nixpkgs unstable

💅 svc_rdma_encode_write_segment(9) — like, the Kernel API Manual entry bestie 💅

okay so this is svc_rdma_encode_write_segment, straight out of the Kernel API Manual, and it's genuinely just doing one little job for you: encoding one Write segment. that's it. that's the whole vibe. ✨

🌸 NAME 🌸

svc_rdma_encode_write_segment — Encode one Write segment 🎀

✨ SYNOPSIS ✨

ssize_t svc_rdma_encode_write_segment (struct svc_rdma_send_ctxt *sctxt
, const struct svc_rdma_chunk *chunk , u32 *remaining , unsigned int
segno );

no cap, that's the whole signature. copy it exactly, don't @ me 🫶

🦋 ARGUMENTS 🦋

okay bestie let's meet the cast, they all have main character energy in their own way:

  • sctxt — the send context for the RPC Reply. she's the stage the whole thing happens on 💖
  • chunk — the Write chunk you're pushing. yes, this one. go off 👑
  • remaining — the remaining bytes of the payload left in the Write chunk. it's giving "how much room is left in the suitcase" 🧳
  • segno — which segment in the chunk. like, which one are we doing rn, bestie 🌈

🔥 DESCRIPTION 🔥

so here's the return-value tea, and it's short and sweet:

  • On success it returns the length in bytes of the Reply XDR buffer that was consumed by the Write segment — and it updates remaining. slay, it's doing two things 💅
  • -EMSGSIZE on XDR buffer overflow. translation: you tried to put too much in there and the buffer said "absolutely not" 💀
no extra lore here, that's literally the whole description. don't invent stuff. periodt.

⭐ SEE ALSO ⭐

go read the source, it's right here in the kernel file ./net/sunrpc/xprtrdma/svc_rdma_sendto.c 📂

and the whole friend group:

mwah 💋 that's the page. this little cutie lives in ./net/sunrpc/xprtrdma, and the version is dated October 2026 — so mark your calendars bestie, and see you in the same title slot: svc_rdma_en...rite_segment(9) 🎀✨

📦 where this page comes from