rhltable_remove(9)

💖 NAME 💖

Okay so bestie, this is the rhltable_remove(9) page from the Kernel API Manual, and it does exactly what it says on the tin: remove object from hash list table. It’s the “please take this thing out of the hash list table” function, and yes, it has main character energy 💅.

✨ SYNOPSIS ✨

int rhltable_remove (struct rhltable *hlt , struct rhlist_head *list ,
const struct rhashtable_params params );

🫶 ARGUMENTS 🫶

• hlt — hash list table. That’s the table, bestie 🫶.
• list — pointer to hash list head inside object. It’s the list head inside the object, not the whole object vibe.
• params — hash table parameters. The settings, the parameters, the whole config situation.

🌀 DESCRIPTION 🌀

Okay so here’s the tea ☕: since the hash chain is single linked, the removal operation needs to walk the bucket chain upon removal. The way that works is literally a little bucket-chain stroll, and the removal operation is thus considerably slower if the hash table is not correctly sized. No cap, sizing matters 🔥.

It will automatically shrink the table if permitted when residency drops below 30%. Slay, self-sizing behavior ✨.

Returns zero on success, -ENOENT if the entry could not be found. So if it’s not there, it’s giving “not found” with -ENOENT, periodt 💀.

🔗 SEE ALSO 🔗

If you wanna keep reading, go peek at the Kernel file ./include/linux/rhashtable.h and struct bucket_table(9), plus rht_grow_above_75(9), rht_shrink_below_30(9), rht_grow_above_100(9), rht_grow_above_max(9), rht_for_each_from(9), rht_for_each(9), rht_for_each_entry_from(9), rht_for_each_entry(9), rht_for_each_entry_safe(9), rht_for_each_rcu_from(9), rht_for_each_rcu(9), rht_for_each_entry_rcu_from(9), rht_for_each_entry_rcu(9), rhl_for_each_rcu(9), rhl_for_each_entry_rcu(9), rhashtable_lookup(9), rhashtable_lookup_fast(9), rhltable_lookup(9), rhashtable_insert_fast(9), rhltable_insert_key(9), rhltable_insert(9), rhashtable_lookup_insert_fast(9), rhashtable_lookup_get_insert_fast(9), rhashtable_lookup_insert_key(9), rhashtable_lookup_get_insert_key(9), rhashtable_remove_fast(9), rhashtable_replace_fast(9), rhltable_walk_enter(9), rhltable_free_and_destroy(9). It’s a whole linked-list-adjacent friend group, iykyk 🌈.

Sign-off time, bestie 🎀: this page’s source is ./include/linux, its date stamp is October 2026, and it’s filed under rhltable_remove(9) — iconic, honestly 👑✨.