add_slab_journal_entries(9)

💅 add_slab_journal_entries — Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual, and today's main character is add_slab_journal_entries(9). she's a function in the kernel, she's doing recovery work, and she's lowkey iconic 🫶

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🌸 NAME 🌸

add_slab_journal_entries — replay recovery journal entries into the slab journals of the allocator currently being recovered. that's it, that's the whole vibe ✨

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🦋 SYNOPSIS 🦋

void add_slab_journal_entries (struct vdo_completion *completion );

literally one argument, returns void, no cap 💅

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🎀 ARGUMENTS 🎀

• completion — the allocator completion. that's the thing being handed in, and yes she's the star of the show 👑

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⭐ DESCRIPTION ⭐

so here's the tea ☕ — this function waits for slab journal tailblock space when necessary. like, if there's no room, she just waits it out, patient queen energy 🧚

and the iconic part? this method is its own callback. she calls herself back. main character energy fr fr, no middleman, she handles her own business 🔥

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🌈 SEE ALSO 🌈

bestie there are SO many siblings, buckle up, i'm listing every single one because we don't do gatekeeping here 💖

• 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)
• 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)

and if you wanna read the actual source, it lives in the kernel file ./drivers/md/dm-vdo/repair.c — go peek, she's right there 🍓

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👑 the cute little sign-off 👑

so yeah, this whole page is brought to you by the fine folks over in ./drivers/md/dm-vdo, dated October 2026 💜 that's the source, that's the version, that's the date, we stan a documented function. mwah 💋✨