svc_rdma_page_dma_map(9)

📦 version 7.3.1, in nixpkgs unstable

💅 svc_rdma_page_dma_map(9) — like, the Kernel API Manual one, section 9, bestie ✨

okay so real talk, we're in the Kernel API Manual today and there is exactly one function on the docket, and it's a little icon: svc_rdma_page_dma_map. That's the name. That's the whole name. Slay.

🌸 NAME 🌸

svc_rdma_page_dma_map — DMA map one page 💫

Bestie. It does one page. One (1) page. It DMA maps it. No cap.

🎀 SYNOPSIS 🎀

int svc_rdma_page_dma_map (void *data , struct page *page , unsigned
long offset , unsigned int len );

the way that it returns an int and takes four whole arguments… main character energy fr fr 🫶

🦋 ARGUMENTS 🦋

  • data — pointer to arguments. that's it, that's the whole vibe 🙈
  • page — the struct page we are about to DMA map. this is the girl we're mapping 👑
  • offset — offset into the page. like, where inside the page do we start? iykyk
  • len — number of bytes to map. hi how many bytes 💖

⭐ RETURN ⭐

  • 0 if DMA mapping was successful — we love a zero, iconic, ate and left no crumbs ✨
  • -EIO if the page cannot be DMA mapped — and if that happens, ngl, it's giving "the page said no" 😭

🌈 SEE ALSO 🌈

Kernel file ./net/sunrpc/xprtrdma/svc_rdma_sendto.c — like, the source, go look at it, it's right there 💅

and then the whole friend group, the entire roster, every single one, nobody gets left out 🫶:

like literally the whole group chat 😭💜

also there are no BUGS, ERRORS, or WARNINGS sections on this page, so if you were waiting for the tea, there is no tea, the tea is just the page ⭐

and that's the page, bestie 🍓💅 this one lives in ./net/sunrpc/xprtrdma and it's dated October 2026 — so go forth, DMA map your one single page, and remember: svc_rdma_page_dma_map(9) loves you 🧚‍♀️💖

📦 where this page comes from