__ns_tree_gen_id(9)

💖 __ns_tree_gen_id — Kernel API Manual ✨

okay bestie, we're diving into the Kernel API Manual for __ns_tree_gen_id(9). buckle up, it's giving namespace id creation energy 🎀

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🌸 NAME 🌸

__ns_tree_gen_id — literally generates a new namespace id, that's the whole gig 💅

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✨ SYNOPSIS ✨

u64 __ns_tree_gen_id (struct ns_common *ns , u64 id );

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🫶 ARGUMENTS 🫶

• ns — the namespace you want to generate an id for. that's the main character right there 👑
• id — if this is non-zero, then this is the initial namespace and this is a fixed id. so like, you're calling the shots on the number 🔥

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🦋 DESCRIPTION 🦋

so what it does: it generates a new namespace id and assigns it to the namespace. slay ✨

and here's the iconic part — all namespace types share the same id space, so you can compare them directly. IOW, when two ids of two namespaces are equal, they are identical. no cap, fr fr 💯

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🌈 SEE ALSO 🌈

• Kernel file ./kernel/nstree.c
• ns_tree_node_init(9)
• ns_tree_root_init(9)
• ns_tree_node_empty(9)
• ns_tree_node_add(9)
• ns_tree_node_del(9)
• __ns_tree_adjoined_rcu(9)

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💖 go read those, iykyk — they're all hanging out in ./kernel and they're lowkey obsessed with each other 🧚

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mwah 💜 this page lives in ./kernel, from the October 2026 edition of the Kernel API Manual — catch you in the next one, bestie! 🍓