hlist_count_nodes(9)

💖 hlist_count_nodes(9) 💖

okay so welcome to the hlist_count_nodes(9) page from the Kernel API Manual — yes that's the actual title, and yes it's a whole page for one function, and honestly? it deserves it. 🎀

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✨ NAME ✨

hlist_count_nodes — bestie, it literally counts the nodes in the hlist. that's the whole gig. that's the job. 💅

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🌸 SYNOPSIS 🌸

size_t hlist_count_nodes (struct hlist_head *head );

look at that signature. so clean. so size_t. so slay. ✨

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🦋 ARGUMENTS 🦋

• head — the head for your hlist. that's it, that's the whole argument. hand over the head of your hlist and she'll tell you how many nodes are vibing in there. 👑

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🔥 SEE ALSO 🔥

this list is iconic and no i will not be shortening it, because every single one of these matters. it's giving "the entire list.h extended universe" and we respect the lore. also, important context up front: these all live in the kernel file ./include/linux/list.h 📚

• LIST_HEAD_INIT(9)
• LIST_HEAD(9)
• LIST_HEAD_GUARDED(9)
• INIT_LIST_HEAD(9)
• list_add(9)
• list_add_tail(9)
• list_add_tail_release(9)
• list_del(9)
• list_replace(9)
• list_replace_init(9)
• list_swap(9)
• list_del_init(9)
• list_move(9)
• list_move_tail(9)
• list_bulk_move_tail(9)
• list_is_first(9)
• list_is_last(9)
• list_is_head(9)
• list_empty(9)
• list_del_init_careful(9)
• list_empty_careful(9)
• list_rotate_left(9)
• list_rotate_to_front(9)
• list_is_singular(9)
• list_cut_position(9)
• list_cut_before(9)
• list_splice(9)
• list_splice_tail(9)
• list_splice_init(9)
• list_splice_tail_init(9)
• 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)
• 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)
• 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)

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like,, if you got through that whole list you're genuinely built different. main character energy fr fr. 🫶

so yeah — hlist_count_nodes counts nodes in the hlist, takes the head of your hlist, returns a size_t, and lives happily in ./include/linux. periodt. 💜

and that's the page!! this lil cutie comes to you from ./include/linux and is dated October 2026 — no cap, that's the version stamp, mwah 💋✨