locks_start_grace(9)

💅 locks_start_grace(9) — Kernel API Manual, bestie edition ✨

okay so real talk, this one lives in the Kernel API Manual and it's literally the "start the grace period" button. that's the whole vibe. let's get into it 🎀

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🌸 NAME

locks_start_grace — and ngl the original page just leaves the description blank after the dash, so like… the name is the name. it starts a grace period. iconic of it, honestly. 🫶

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✨ SYNOPSIS

void locks_start_grace (struct net *net , struct lock_manager *lm );

that's it, that's the whole signature. no return value, it's giving void and unbothered. 💅

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🦋 ARGUMENTS

• net — the net namespace that this lock manager belongs to. like, whose world are we in? that one. 🌈
• lm — who this grace period is for. the lock manager in question. it's giving main character energy, because the grace period is literally about them. 👑

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💖 DESCRIPTION

okay so first things first, what even is a grace period? it's a period during which locks should not be given out. that's the whole definition, no cap. 🚫🔒

currently, grace periods are only enforced by the two lock managers — that's lockd and nfsd — and they do it by using the locks_in_grace function to check when they're in a grace period. so locks_in_grace is the vibe check function, and it's doing the actual enforcing. 💀

and this function right here? locks_start_grace? it's called to start a grace period. that's the whole job. short, sweet, slays. periodt. 🔥

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🧚 SEE ALSO

• Kernel file ./fs/nfs_common/grace.c — the source, go read it bestie 📖
• locks_end_grace(9) — the other half of the story, the closing chapter 🎬
• locks_in_grace(9) — the checker, the vibe check, the "are we in a grace period rn" oracle 🔮

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lowkey a tiny function with a big responsibility. don't sleep on it. 💜

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✿ and that's the page! brought to you by ./fs/nfs_common, October 2026, and the one and only locks_start_grace(9) — mwah, go start some grace periods responsibly 🍓✨