nlmsvc_proc_unshare(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nlmsvc_proc_unshare — the Kernel API Manual glow-up 🦋

okay so this is nlmsvc_proc_unshare(9), bestie — a kernel API manual page, and honestly? she's serving release the share reservation realness. Let's get into it 💖

✨ NAME ✨

nlmsvc_proc_unshare — UNSHARE: Release a share reservation 🎀

🌸 SYNOPSIS 🌸

__be32 nlmsvc_proc_unshare (struct svc_rqst *rqstp );

that's it. that's the whole vibe. one function, one argument, __be32 out the other side ✨

🫶 ARGUMENTS 🫶

  • rqstp — the RPC transaction context 💜 like, the whole little world this call is living in. everything you need to know about the request in flight? it's in there.

🔥 RETURN 🔥

here's the tea on what comes back 👑

  • rpc_success — RPC executed successfully. slay. it worked. 🎉
  • rpc_drop_reply — Do not send an RPC reply. no cap, literally nothing goes back out. 🙈

👑 DESCRIPTION 👑

okay so the RPC synopsis, character for character, no notes:

nlm_shareres NLM_UNSHARE(nlm_shareargs) = 21;

and here are the permissible procedure status codes you might see 💅

  • LCK_GRANTED — The share reservation was released. iconic behaviour, honestly. mission accomplished 🌈
  • LCK_DENIED_GRACE_PERIOD — The server has recently restarted and is re-establishing existing locks, and is not yet ready to accept normal service requests. like babe she just woke up, give her a sec to put her lashes on 😭 she is not taking requests yet.

not me also telling you that the Linux NLM server implementation returns extra stuff beyond the standard set — it's giving overachiever 🧚

  • LCK_DENIED_NOLOCKS — A needed resource could not be allocated. rip. the room was full, the resource was not available, we move 💀
fr fr though — those status codes are the entire story of what this call can tell you. don't sleep on LCK_DENIED_GRACE_PERIOD, she's the one that confuses people. it means restarted + still rebuilding locks, not nope forever.

🦋 SEE ALSO 🦋

the whole friend group 🫶 — kernel file ./fs/lockd/svcproc.c and, in no particular order, every sibling that shows up to the party:

iykyk 💫

aaaand that's the page!! 🎀 huge shoutout to ./fs/lockd for being the source home, October 2026 for the date stamp, and nlmsvc_proc_unshare(9) for the manual name — you ate and left zero crumbs, bestie 💖✨

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