page_is_written_out(9)

💅 page_is_written_out — Kernel API Manual, bestie edition 🎀

okay so real talk, this one is from the Kernel API Manual, and it's literally the callback that fires when a page has been written out. that's the whole vibe. short, iconic, to the point. periodt. ✨

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🌸 NAME 🌸

page_is_written_out — the callback that goes off when a page has been written out. that's it. that's the function. 🫶

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✨ SYNOPSIS ✨

void page_is_written_out (struct vdo_completion *completion );

ngl the signature is giving "void, takes one thing, returns nothing, says everything" 💀

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🦋 ARGUMENTS 🦋

• completion — the vio that wrote the page, bestie. and its parent? a page_info. so yeah, family tree matters here 👑 like, the completion is the one doing the writing but its parent is the page info, iykyk.

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🔥 SEE ALSO 🔥

okay this list is LONG and I'm obsessed, like it's giving "the whole block map friend group showed up to the party." all from the kernel file ./drivers/md/dm-vdo/block-map.c, Block map eras(9). here's everyone, no cap, nobody left out:

• 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_error(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)
• 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)

like?? that's the whole squad 💜 go read them, they all ate. 🍓

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and that's the tea, bestie 🧚 source and version: ./drivers/md/dm-vdo, dated October 2026 — same manual, same page name, no notes, mwah 💖