ipc_kht_remove(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, welcome to ipc_kht_remove(9), and yes the Kernel API Manual name is folded in right at the top because we are absolutely not copy-pasting that header line, periodt 💅.

🎀 NAME 🎀

ipc_kht_remove — remove an ipc from the key hashtable. That's the whole assignment: it takes an ipc out of the key hashtable. Slay.

✨ SYNOPSIS ✨

void ipc_kht_remove (struct ipc_ids *ids , struct kern_ipc_perm *ipcp );

🫶 ARGUMENTS 🫶

  • ids — the ipc identifier set. It's the ids situation.
  • ipcp — the ipc perm structure containing the key to remove. Yes, the key lives in there, and this is the structure that has it.

💖 DESCRIPTION 💖

Okay so the lock vibe check: before this function is called, ipc_ids.rwsem is held as a writer, and the spinlock for this ID is held too. On the way out, both of those stay locked. Like, they remain locked on the exit — no cap. So this function is doing its thing inside an already-locked setup, and it is not the one unlocking anything.

bestie, the held-lock situation is not a suggestion. ipc_ids.rwsem (writer mode) plus this ID's spinlock are already held before the call, and they are still held after the call. That's the documented deal. 💅

🌈 SEE ALSO 🌈

Kernel file ./ipc/util.c — and here's the whole friend group, no one left out:

xoxo, this cutie came from the source/version ./ipc and it's dated October 2026; the page is ipc_kht_remove(9), and that's the footer tea mentioned with a little sign-off 💋🎀.

📦 where this page comes from