launch_page_load(9)

💫 launch_page_load(9) — the kernel API page bestie edition 💫

okay so real talk, this is launch_page_load from the Kernel API Manual, and it's literally the "press start" button for page loading. no cap. let's get into it 🎀

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✨ NAME ✨

launch_page_load — begin the process of loading a page. that's it, that's the whole vibe. it's giving "loading screen but make it kernel" 🌸

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🦋 SYNOPSIS 🦋

int launch_page_load (struct page_info *info , physical_block_number_t
pbn );

like, exactly that signature, bestie — don't go editing it, it's perfect as is 💅

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👑 ARGUMENTS 👑

• info — the page info you're launching. this is the page info, the main character of the operation 🫶
• pbn — the absolute physical block number of the page you wanna load. absolute, literally. not relative, not vibes-based, absolute 📍

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🌈 RETURN 🌈

VDO_SUCCESS or an error code. that's the whole menu. either slay or 💀, no in-between, iykyk

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🔥 SEE ALSO 🔥

the whole squad, fr fr — this page does NOT come alone:

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_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)
• 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)

like… that's a whole group chat right there, and every single one of them is invited to the function 💜

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lowkey important: that ./drivers/md/dm-vdo path up there is where this page lives, and it's dated October 2026 — so go read it in the future, bestie 🧚

okay that's the whole page!! mwah, go load some pages, you're gonna ate 💖🎀⭐