svc_rdma_copy_inline_range(9)

📦 version 7.3.1, in nixpkgs unstable

💅 svc_rdma_copy_inline_range(9) 💅

okay so bestie, this is a Kernel API Manual moment, section 9, and the star of the show is svc_rdma_copy_inline_range — literally the glow-up your inline content needed ✨

🌸 NAME 🌸

svc_rdma_copy_inline_range — copy part of the inline content into pages 🎀

🦋 SYNOPSIS 🦋

int svc_rdma_copy_inline_range (struct svc_rqst *rqstp , struct
       svc_rdma_recv_ctxt *head , unsigned int offset , unsigned int remaining
       );

💖 ARGUMENTS 💖

  • rqstp — the RPC transaction context, aka the main character of this whole operation 👑
  • head — context for the ongoing I/O, holding it down in the background fr fr
  • offset — where in the inline content the region you're copying actually starts 📍
  • remaining — how long the region you're copying is, like the length check no cap 💅

✨ DESCRIPTION ✨

so basically: take a page at a time from rqstp->rq_pages and copy the inline content from the Receive buffer into that page. stealing pages one at a time, iconic behaviour honestly 🫶

then update head->rc_curpage and head->rc_pageoff so that the next RDMA Read result will land contiguously with the copied content — like a perfectly queued group chat, everything in order, no gaps, slay 🌈

Return values, and listen up:

  • 0 — inline content was successfully copied, we ate and left no crumbs 🔥
  • -EINVAL — offset or length was incorrect, the vibe check failed 😭

🌺 SEE ALSO 🌺

Kernel file ./net/sunrpc/xprtrdma/svc_rdma_rw.c — go read it iykyk 📖

and the whole friend group, all of them, every single one 💜

mwah 💋 that's the page, bestie — brought to you by the fine folks at ./net/sunrpc/xprtrdma, dated October 2026, and this whole svc_rdma_copy_inline_range(9) situation is a mood. go forth and copy those ranges, ily 🧚💜

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