xdr_shrink_bufhead(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

This is xdr_shrink_bufhead from the Kernel API Manual, section (9), bestie. The name line is literally xdr_shrink_bufhead - with nothing after the dash — that’s it, that’s the whole name entry, and honestly? iconic minimalism. 💅

✨ SYNOPSIS ✨

Here’s the exact signature, no edits, no vibes-only paraphrase:

unsigned int xdr_shrink_bufhead (struct xdr_buf *buf , unsigned int len
       );

🎀 ARGUMENTS 🎀

  • buf — an xdr_buf, aka the buffer we’re working with.
  • len — the new length of buf->head[0]. That’s the assignment, bestie.

🦋 DESCRIPTION 🦋

Okay so this function shrinks the XDR buffer’s header kvec, buf->head[0]. It sets it to moved into the inlined pages and/or the tail. That “setting it to moved into” phrasing is literally what the page says — don’t come for me, I’m just delivering the facts with better lighting. 😭✨

🔥 SEE ALSO 🔥

Kernel file: ./net/sunrpc/xdr.c — yes, that exact path, no cap.

The whole squad of (9) references, all present and accounted for:

and that’s the page, bestie 🫶💖 — source/version ./net/sunrpc, dated October 2026, from the Kernel API Manual.

📦 where this page comes from