rpcrdma_rn_unregister(9)

💅 rpcrdma_rn_unregister — a Kernel API Manual moment

okay so bestie, welcome to rpcrdma_rn_unregister(9), the Kernel API Manual page that's basically the "unsubscribe" button of device-removal notifications. it's giving closure. it's giving goodbye text. let's get into it ✨

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🌸 NAME 🌸

rpcrdma_rn_unregister — stop device removal notifications 🛑

like literally, you're telling the notification system "i'm done, please stop texting me about device removal" and honestly? respect.

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🦋 SYNOPSIS 🦋

void rpcrdma_rn_unregister (struct ib_device *device , struct
rpcrdma_notification *rn );

no return value, bestie — it's a void function, so there's nothing to catch, nothing to check, just vibes and a clean exit 💜

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🎀 ARGUMENTS 🎀

• device — the monitored device 👀 like, this is the device you were keeping tabs on. the one whose removal notifications you were subscribed to.
• rn — the notification object that no longer wishes to be notified 🙈 fr fr, this is the object raising its hand and going "i'd like to be removed from the list please."

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⭐ DESCRIPTION ⭐

okay so here's the part that's genuinely iconic: it is safe to call this on an rn whose registration never completed or failed. 😭 like, you don't have to worry about whether the registration actually finished — you can just call it anyway.

specifically — and this is the detail, don't miss it — rn_done == NULL is treated as never-registered, and the call is a no-op. 🫶 so if it was never registered to begin with, nothing happens. no crash, no drama, no main character meltdown. just a quiet no-op and you move on with your life 💅

ngl this is the "cancel my subscription" that actually works even if you never successfully subscribed. we love a defensive API 🌈

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👑 SEE ALSO 👑

• Kernel file ./net/sunrpc/xprtrdma/ib_client.c
• rpcrdma_rn_register(9)
• rpcrdma_add_one(9)
• rpcrdma_remove_one(9)
• rpcrdma_ib_client_unregister(9)
• rpcrdma_ib_client_register(9)

like, go read the whole friend group honestly, they all make sense together 🧚

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and that's the page!! 🍓 brought to you from ./net/sunrpc/xprtrdma, dated October 2026, and yes the footer still says rpcrdma_rn_unregister(9) because we keep the important things. mwah 💖✨