complete_waiter_with_error(9)

✨ complete_waiter_with_error(9) ✨

okay so bestie, welcome to the Kernel API Manual 🎀 — this one's short but she's important, and she lives in the complete_waiter_with_error(9) corner of the kernel. let's get into it 💅

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🌸 NAME 🌸

complete_waiter_with_error — the "oops, it broke" girlie of page completion 💀 she finishes off a page completion but with an error code instead of actual data.

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🦋 SYNOPSIS 🦋

void complete_waiter_with_error (struct vdo_waiter *waiter , void
*result_ptr );

literally that's the whole shape of her. no cap. ✨

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💖 ARGUMENTS 💖

• waiter — the page completion, but like, as a waiter. yes bestie, a waiter 🫖 (the struct kind, not the restaurant kind, though honestly the vibes are similar — she's been waiting to be served).
• result_ptr — a pointer to the error code. that's it. that's the baggage she's carrying 😭

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👑 DESCRIPTION 👑

bestie. she implements waiter_callback_fn. that's the whole description. she's a callback, she does the callback thing, she completes a waiter with an error code, and she's iconic for it. no extra lore, no secret powers, don't go looking for more, there isn't more 💅

fr fr the manpage says exactly one sentence here and I'm not about to invent fanfic about it. what you see is what you get. periodt.

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🌈 SEE ALSO 🌈

the extended friend group 💜 — all of these are related, and they're all in the kernel file ./drivers/md/dm-vdo/block-map.c:

• Block map eras(9)
• initialize_info(9)
• allocate_cache_components(9)
• assert_on_cache_thread(9)
• get_page_state_name(9)
• update_counter(9)
• set_info_state(9)
• find_free_page(9)
• find_page(9)
• select_lru_page(9)
• complete_with_page(9)
• complete_waiter_with_page(9)
• distribute_page_over_waitq(9)
• set_persistent_error(9)
• validate_completed_page(9)
• handle_load_error(9)
• page_is_loaded(9)
• handle_rebuild_read_error(9)
• launch_page_load(9)
• schedule_page_save(9)
• launch_page_save(9)
• completion_needs_page(9)
• allocate_free_page(9)
• discard_a_page(9)
• discard_page_if_needed(9)
• write_has_finished(9)
• handle_page_write_error(9)
• page_is_written_out(9)
• write_pages(9)
• vdo_release_page_completion(9)
• vdo_get_page(9)
• vdo_request_page_write(9)
• vdo_get_cached_page(9)
• vdo_invalidate_page_cache(9)
• get_tree_page_by_index(9)
• in_cyclic_range(9)
• is_not_older(9)
• add_to_dirty_lists(9)
• vdo_find_block_map_slot(9)
• make_forest(9)
• replace_forest(9)
• finish_cursor(9)
• continue_traversal(9)
• finish_traversal_load(9)
• traverse(9)
• launch_cursor(9)
• compute_boundary(9)
• vdo_traverse_forest(9)
• initialize_block_map_zone(9)
• clear_mapped_location(9)
• set_mapped_location(9)

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and that's the whole page bestie!!! 🧚‍♀️ go forth and complete some waiters (with errors, as specified) 💖

mwah 💋 — brought to you by ./drivers/md/dm-vdo, dated October 2026, and she's a complete_waiter_with_error(9) girlie forever ⭐