list_add_tail_release(9)

💖 list_add_tail_release — it's a list_add_tail_release(9) moment, kernel API manual girlies rise 🎀

okay so bestie, this is a kernel API page (that's the (9) section, iykyk) and it's genuinely short and sweet. Let's get into it. ✨

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🌸 NAME 🌸

list_add_tail_release — add a new entry, but with a release barrier 🦋 (yes the barrier is the whole point, not me being dramatic)

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⭐ SYNOPSIS ⭐

void list_add_tail_release (struct list_head *new , struct list_head *head );

that's it. two pointers, no return value, void void void. clean. 💅

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🫶 ARGUMENTS 🫶

• new — the new entry you're adding, bestie. she's the main character here 👑
• head — the list head you're adding it before 🌈

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🔥 DESCRIPTION 🔥

okay so what this does: it inserts new before the specified head, and it uses a release barrier to set the ->next pointer that points to it. literally that's the whole vibe. ✨

and like, why do you care? because this is useful for implementing queues — specifically one that the elements are going to be walked through forwards locklessly 💀. so if you're doing lockless forward walking, this is your girl. no cap. 🧚

the barrier is doing real work here, don't sleep on it — it's the difference between "queue" and "chaos". 🙈

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👑 SEE ALSO 👑

Kernel file ./include/linux/list.h — and like, the entire list family reunion. everyone's here. bring snacks. 🍓

• heads & init: LIST_HEAD_INIT(9), LIST_HEAD(9), LIST_HEAD_GUARDED(9), INIT_LIST_HEAD(9)
• adding stuff: list_add(9), list_add_tail(9)
• deleting / replacing: list_del(9), list_replace(9), list_replace_init(9), list_swap(9), list_del_init(9), list_del_init_careful(9)
• moving: list_move(9), list_move_tail(9), list_bulk_move_tail(9)
• is she…? checks: list_is_first(9), list_is_last(9), list_is_head(9), list_is_singular(9)
• empty checks: list_empty(9), list_empty_careful(9)
• rotating: list_rotate_left(9), list_rotate_to_front(9)
• cutting / splicing: list_cut_position(9), list_cut_before(9), list_splice(9), list_splice_tail(9), list_splice_init(9), list_splice_tail_init(9)
• getting entries out: list_entry(9), list_first_entry(9), list_last_entry(9), list_first_entry_or_null(9), list_first_entry_or_null_acquire(9), list_last_entry_or_null(9), list_next_entry(9), list_next_entry_circular(9), list_prev_entry(9), list_prev_entry_circular(9)
• iteration nation: list_for_each(9), list_for_each_continue(9), list_for_each_prev(9), list_for_each_safe(9), list_for_each_prev_safe(9), list_count_nodes(9), list_entry_is_head(9), list_for_each_entry(9), list_for_each_entry_reverse(9), list_prepare_entry(9), list_for_each_entry_continue(9), list_for_each_entry_continue_reverse(9), list_for_each_entry_from(9), list_for_each_entry_from_reverse(9), list_for_each_entry_safe(9), list_for_each_entry_safe_continue(9), list_for_each_entry_safe_from(9), list_for_each_entry_safe_reverse(9), list_safe_reset_next(9)
• and the hlist girlies too: hlist_unhashed(9), hlist_unhashed_lockless(9), hlist_empty(9), hlist_del(9), hlist_del_init(9), hlist_add_head(9), hlist_add_before(9), hlist_add_behind(9), hlist_add_fake(9), hlist_fake(9), hlist_is_singular_node(9), hlist_move_list(9), hlist_splice_init(9), hlist_for_each_entry(9), hlist_for_each_entry_continue(9), hlist_for_each_entry_from(9), hlist_for_each_entry_safe(9), hlist_count_nodes(9)

like, all of them. I'm not skipping a single one, that would be a crime fr fr. 💀

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okay that's the whole page!! mwah 💋 — this cutie came out of ./include/linux, dated October 2026, and she's filed under list_add_tail_release(9). go forth and locklessly walk your queues forwards, bestie. slay. 💅✨