get_recover...block_header(9)

💫 get_recovery_journal_block_header — Kernel API Manual, section 9 ✨

okay so bestie, welcome to <pink>get_recovery_journal_block_header</pink>(9) from the Kernel API Manual, and no cap this one is a little legend. the name is literally the whole plot: get_recovery_journal_block_header — it grabs you the block header for a block sitting at some position in the journal data, and unpacks it. that's it. that's the vibe. 🎀

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🌸 SYNOPSIS 🌸

struct recovery_block_header get_recovery_journal_block_header (struct
recovery_journal *journal , char *data , sequence_number_t sequence );

yes she's a chunky signature, but she ATE. 💅

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🦋 ARGUMENTS 🦋

• journal — the recovery journal itself, the main character of this whole operation 👑
• data — the recovery journal data, i.e. the actual bytes we're poking at
• sequence — the sequence number, the sequence_number_t one, don't lose track of her 🧚

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⭐ RETURN ⭐

you get back the unpacked header — the struct recovery_block_header, all opened up and ready to read. periodt. 🫶

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💜 SEE ALSO 💜

literally the whole friend group, the entire Kernel file ./drivers/md/dm-vdo/repair.c campus, all showing up to the group chat:

• 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)
• fetch_page(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)
• 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)

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💀 reminder bestie: every one of those is a real (9) page in ./drivers/md/dm-vdo/repair.c. don't @ me, go read them, iykyk 🔥

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and that's the tea, bestie 💖 this lil icon lives in ./drivers/md/dm-vdo, dated October 2026, chilling in section 9 of the Kernel API Manual — go forth and unpack those headers, slay 🌈👑🌸