nfsd4_process_open2(9)

💅 nfsd4_process_open2(9) — like, the finish open processing era 🎀

okay so bestie, this is a page from the Kernel API Manual (section 9, kernel functions, iykyk) and today's main character is nfsd4_process_open2 — the function that finishes open processing. yes. the finishing. it's giving closing-act energy ✨

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🌸 SYNOPSIS 🌸

__be32 nfsd4_process_open2 (struct svc_rqst *rqstp , struct svc_fh
*current_fh , struct nfsd4_open *open );

that's the whole squad right there — three parameters, one __be32 return, zero chill 🫶

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🦋 ARGUMENTS 🦋

• rqstp — the RPC transaction that's currently being executed, aka the moment itself, the vibe check in progress 💫
• current_fh — the NFSv4 COMPOUND's current filehandle. yes, the filehandle. the one everybody's been passing around 👑
• open — the OPEN arguments. the paperwork. the receipts 📄

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🔥 DESCRIPTION 🔥

so if everything goes well — and like, we love a success story — this function does three (3) iconic things, in order, no cap:

1. truncate the file if open->op_truncate was set 📏
2. set open->op_stateid 🪪
3. set open->op_delegation 🤝

and then the returns, bestie:

Returns nfs_ok on success; otherwise an nfs4stat value in network byte order is returned. (network byte order fr fr, don't come for me about endianness 💀)

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💜 SEE ALSO 💜

• Kernel file ./fs/nfsd/nfs4state.c — the source of truth, the origin story 📖
• nfs4_delegation_exists(9)
• hash_delegation_locked(9)
• revoke_delegation(9)
• nfs4_replay_free_cache(9)
• nfsd4_revoke_states(9)
• nfsd4_revoke_export_states(9)
• nfsd_slot_shrinker_count(9)
• nfsd_slot_shrinker_scan(9)
• nfsd4_put_client(9)
• nfsd_wait_for_delegreturn(9)
• nfsd_breaker_owns_lease(9)
• nfsd4_deleg_lm_open_conflict(9)
• nfsd4_force_end_grace(9)
• nfs4_preprocess_stateid_op(9)
• nfs4_preprocess_seqid_op(9)
• nfsd4_release_lockowner(9)
• nfsd4_vet_deleg_time(9)
• nfsd4_deleg_getattr_conflict(9)
• nfsd_get_dir_deleg(9)
• nfsd_update_cmtime_attr(9)

that's a whole friend group of delegation-and-stateid functions and honestly? obsessed. read them all, they ate 💅

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and that's the page!! mwah 🍓 this little beauty comes to you from ./fs/nfsd, dated October 2026 — catch you in the next man page, bestie 💖✨🧚