xdr_set_pagelen(9)

📦 version 7.3.1, in nixpkgs unstable

💖 xdr_set_pagelen(9) — the Kernel API Manual glow-up 🎀

okay so bestie, you're in the Kernel API Manual section and the function we're stanning today is xdr_set_pagelen(9) — yes that's her name, she sets the length of the XDR pages, and honestly? iconic behavior. let's get into it 💅

✨ NAME ✨

xdr_set_pagelen — sets the length of the XDR pages 🌸

✨ SYNOPSIS ✨

void xdr_set_pagelen (struct xdr_stream *xdr , unsigned int len );

that's the whole vibe. no cap, that's it. 🫶

✨ ARGUMENTS ✨

  • xdr — pointer to the xdr_stream struct 🧚 like, the stream we're messing with, bestie
  • len — the new length of the XDR page data 📏 the actual number of bytes we want pagelen to be

✨ DESCRIPTION ✨

so the whole gig is this: xdr_set_pagelen either grows or shrinks the length of the xdr pages by setting pagelen to len bytes. both directions are valid, it's giving versatile 👑

here's the deets, and don't skip them:

  • when shrinking, any extra data is moved into buf->tail 🦋
  • when growing, any data beyond the current pointer is moved into the tail 🌈

and the return situation? the page says it returns True if the operation was successful, and False otherwise. periodt. (yes the synopsis says void and the description talks about returns — not me noticing, not me saying anything, we're just reporting the facts as written 🙈 the docs said what they said, iykyk 💀)

lowkey important: this is a kernel API page, so treat those True/False words as the official text. don't @ me, @ the source 🎀

✨ SEE ALSO ✨

the source file lives at kernel file ./net/sunrpc/xdr.c, and the whole friend group is here — literally the entire group chat, no one left out:

and that's the page, bestie 💜 go forth and set those page lengths responsibly. this came to you from ./net/sunrpc, October 2026 — mwah, signing off 🫶✨🎀

📦 where this page comes from