fetch_page(9)

fetch_page(9) — like, the block map page grabber 💖

okay bestie, buckle up, we're in the Kernel API Manual today and this one's a <cyan>fetch_page</cyan> situation ✨

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🌸 NAME 🌸

fetch_page — literally fetches a page from the block map. that's it, that's the vibe 🎀

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⭐ SYNOPSIS ⭐

bool fetch_page (struct repair_completion *repair , struct
       vdo_completion *completion );

note the return type: bool. it's giving yes-or-no energy and we love a decisive icon 👑

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🦋 ARGUMENTS 🦋

• repair — the repair_completion. yes, that one. she's the whole context for this operation 💅
• completion — the page completion to use. this is the completion you're handing over, no cap 🫶

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💜 DESCRIPTION 💜

so what does it actually do? it returns true if the rebuild is complete. that's the entire description, bestie, short and iconic, no filler, we respect the minimalism 😭✨

lowkey the tiniest DESCRIPTION section i've ever seen and honestly? she ate. 💀

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🌈 SEE ALSO 🌈

the relatives!! the whole family tree is in the kernel file ./drivers/md/dm-vdo/repair.c and here's every single one of them, not skipping a single one because we're thorough like that 🧚:

• as_repair_completion(9)
• abort_repair(9)
• abort_on_error(9)
• drain_slab_depot(9)
• flush_block_map_updates(9)
• handle_page_load_error(9)
• unmap_entry(9)
• remove_out_of_bounds_entries(9)
• process_slot(9)
• rebuild_reference_counts_from_page(9)
• page_loaded(9)
• rebuild_from_leaves(9)
• process_entry(9)
• advance_points(9)
• before_recovery_point(9)
• get_entry(9)
• validate_recovery_journal_entry(9)
• add_slab_journal_entries(9)
• vdo_replay_into_slab_journals(9)
• find_entry_starting_next_page(9)
• get_recovery_journal_block_header(9)
• is_valid_recovery_journal_block(9)
• is_exact_recovery_journal_block(9)
• find_recovery_journal_head_and_tail(9)
• unpack_entry(9)
• append_sector_entries(9)
• extract_new_mappings(9)
• compute_usages(9)
• vdo_repair(9)

like, a whole friend group 🫶 go read them, iykyk 💖

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this page lives at ./drivers/md/dm-vdo, dated October 2026, and she's fetch_page(9) forever and ever. slay, goodbye, mwah 💋