nfsd_net_pre_exit(9)

💅 nfsd_net_pre_exit — like, the cutest little teardown hook in the kernel API manual ✨

Okay bestie, welcome to nfsd_net_pre_exit(9), brought to you by the Kernel API Manual (yes that's the manual name, we're classy here 🎀). This one's a tiny function with main character energy, so let's get into it 🫶

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🌸 NAME 🌸

nfsd_net_pre_exit — disconnects localio clients from a net namespace. That's it. That's the whole vibe. ✨

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🦋 SYNOPSIS 🦋

__net_exit void nfsd_net_pre_exit (struct net *net );

Literal character-for-character slay, no notes 💅

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💜 ARGUMENTS 💜

• net — a network namespace that is literally about to be destroyed 😭 like it's on its way out, it has its coat on and everything

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🌈 DESCRIPTION 🌈

Okay so here's what's happening, and it's honestly kind of iconic 🧚

This call invalidates the ->net pointers held by localio clients — and it does it while they can still safely access nn->counter 💖

Read that again, bestie: the invalidation happens in that safe little window. The pointers get nuked, but the access to nn->counter is still safe at that moment. That's the whole point. Timing is everything, no cap 🔥

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⭐ SEE ALSO ⭐

Kernel file ./fs/nfsd/nfsctl.c, plus this whole friend group 💀:

• nfsd_nl_rpc_status_get_dumpit(9)
• nfsd_nl_fh_key_set(9)
• nfsd_nl_threads_set_doit(9)
• nfsd_nl_threads_get_doit(9)
• nfsd_nl_version_set_doit(9)
• nfsd_nl_version_get_doit(9)
• nfsd_nl_validate_listeners(9)
• nfsd_nl_listener_set_doit(9)
• nfsd_nl_listener_get_doit(9)
• nfsd_nl_pool_mode_set_doit(9)
• nfsd_nl_pool_mode_get_doit(9)
• nfsd_nl_cache_flush_doit(9)
• nfsd_nl_server_stats_get_dumpit(9)
• nfsd_nl_unlock_ip_doit(9)
• nfsd_nl_unlock_filesystem_doit(9)
• nfsd_nl_unlock_export_doit(9)
• nfsd_net_init(9)
• nfsd_net_exit(9)

Go read them, iykyk 📚💅

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Ngl bestie, this page came from ./fs/nfsd, dated October 2026, and the whole thing is titled nfsd_net_pre_exit(9) — periodt. 🍓✨💖