netlbl_domhsh_free_entry(9)

💖 netlbl_domhsh_free_entry(9) 💖

okay so this is a page straight out of the Kernel API Manual, and bestie, it's a tiny one but it's important. Like, small but mighty. main character energy in four lines of code, fr fr.

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✨ NAME ✨

netlbl_domhsh_free_entry — literally just frees a domain hash table entry 🎀

🦋 SYNOPSIS 🦋

void netlbl_domhsh_free_entry (struct rcu_head *entry );

🌸 ARGUMENTS 🌸

• entry — the entry's RCU field 💅 that's it, that's the whole argument, she's low maintenance

🫶 DESCRIPTION 🫶

so the way this works: this function is designed to be used as a callback to the call_rcu function, okay? like that's its whole purpose in life. and why? so that the memory allocated to a hash table entry can be released safely ✨ not sketchily, not "hope nobody's reading this rn" — safely. we love a responsible queen.

no cap, that's the entire vibe. it's a cleanup callback. she shows up, she frees the memory, she leaves. iconic.

👑 SEE ALSO 👑

this is where the friend group shows up, and honestly? the whole squad is here:

• the kernel file itself: ./net/netlabel/netlabel_domainhash.c 📁
• netlbl_domhsh_hash(9)
• netlbl_domhsh_search(9)
• netlbl_domhsh_search_def(9)
• netlbl_domhsh_audit_add(9)
• netlbl_domhsh_validate(9)
• netlbl_domhsh_init(9)
• netlbl_domhsh_add(9)
• netlbl_domhsh_add_default(9)
• netlbl_domhsh_remove_entry(9)
• netlbl_domhsh_remove_af4(9)
• netlbl_domhsh_remove_af6(9)
• netlbl_domhsh_remove(9)
• netlbl_domhsh_remove_default(9)
• netlbl_domhsh_getentry(9)
• netlbl_domhsh_getentry_af4(9)
• netlbl_domhsh_getentry_af6(9)
• netlbl_domhsh_walk(9)

like, every single one of them. no skips, no cuts, full roster 💀

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ngl, if you're touching RCU callbacks without knowing what call_rcu does, maybe go read up first? this page is just the freeing part, bestie, not the whole story 🙈

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and that's a wrap! this lil page ships from ./net/netlabel, dated October 2026, and you found it right here in the Kernel API Manual. slay, go free some memory safely 🌈💜