open_slab(9)

💖 open_slab(9) 💖

okay bestie, welcome to the Kernel API Manual corner of the group chat 💬 — this page is about open_slab, and it’s giving “prep the slab so allocation can happen” energy ✨ slay.

short page, one function, one argument, and then a SEE ALSO list with main character energy 👑

🌸 NAME 🌸

open_slab — prepare a slab to be allocated from. that’s the whole vibe, no cap 💅

✨ SYNOPSIS ✨

void open_slab (struct vdo_slab *slab );

🎀 ARGUMENTS 🎀

• slab — the slab. literally the slab, bestie 🫶

💅 SEE ALSO 💅

okay this SEE ALSO section is a whole friend group, so here’s every single one, fr fr 👀

• get_lock(9) — also hanging out by the kernel file ./drivers/md/dm-vdo/slab-depot.c 🦋
• must_make_entries_to_flush(9), is_reaping(9), initialize_tail_block(9)
• initialize_journal_state(9), block_is_full(9), is_slab_journal_blank(9)
• mark_slab_journal_dirty(9), compute_fullness_hint(9)
• check_summary_drain_complete(9), notify_summary_waiters(9)
• finish_updating_slab_summary_block(9), finish_update(9)
• handle_write_error(9), launch_write(9), update_slab_summary_entry(9)
• finish_reaping(9), complete_reaping(9), handle_flush_error(9)
• flush_for_reaping(9), reap_slab_journal(9)
• adjust_slab_journal_block_reference(9), release_journal_locks(9)
• update_tail_block_location(9), reopen_slab_journal(9)
• complete_write(9), write_slab_journal_block(9), commit_tail(9)
• encode_slab_journal_entry(9), expand_journal_point(9), add_entry(9)
• vdo_attempt_replay_into_slab(9), requires_reaping(9)
• launch_reference_block_write(9), finish_reference_block_write(9)
• get_reference_counters_for_block(9), pack_reference_block(9)
• handle_io_error(9), write_reference_block(9)
• reference_count_to_status(9), dirty_block(9), get_reference_block(9)
• slab_block_number_from_pbn(9), get_reference_counter(9)
• adjust_free_block_count(9), increment_for_data(9)
• decrement_for_data(9), increment_for_block_map(9)
• update_reference_count(9), add_entry_from_waiter(9)
• is_next_entry_a_block_map_increment(9), add_entries(9)
• reset_search_cursor(9), advance_search_cursor(9)
• vdo_adjust_reference_count_for_rebuild(9)
• replay_reference_count_change(9), find_zero_byte_in_word(9)
• find_free_block(9), search_current_reference_block(9)
• search_reference_blocks(9), make_provisional_reference(9)
• dirty_all_reference_blocks(9), match_bytes(9)
• count_valid_references(9), unpack_reference_block(9)
• finish_reference_block_load(9), load_reference_block_group(9)
• load_reference_blocks(9), drain_slab(9), read_slab_journal_tail(9)
• load_slab_journal(9), get_next_slab(9), has_slabs_to_scrub(9)
• uninitialize_scrubber_vio(9), finish_scrubbing(9), slab_scrubbed(9)
• abort_scrubbing(9), handle_scrubber_error(9), apply_block_entries(9)
• apply_journal_entries(9), start_scrubbing(9), scrub_next_slab(9)
• scrub_slabs(9), get_depot_slab_iterator(9), next_slab(9)
• abort_waiter(9), vdo_acquire_provisional_reference(9)
• vdo_enqueue_clean_slab_waiter(9), vdo_modify_reference_count(9)
• vdo_notify_slab_journals_are_recovered(9), make_slab(9)
• allocate_slabs(9), vdo_abandon_new_slabs(9)
• release_recovery_journal_lock(9), prepare_for_tail_block_commit(9)
• schedule_tail_block_commit(9), initialize_slab_scrubber(9)
• initialize_slab_summary_block(9), vdo_decode_slab_depot(9)
• vdo_free_slab_depot(9), vdo_record_slab_depot(9)
• vdo_allocate_reference_counters(9), get_slab_number(9), vdo_get_slab(9)
• vdo_get_increment_limit(9), vdo_is_physical_data_block(9)
• vdo_get_slab_depot_allocated_blocks(9)
• vdo_get_slab_depot_data_blocks(9), finish_combining_zones(9)
• combine_summaries(9), finish_loading_summary(9), load_slab_summary(9)
• vdo_load_slab_depot(9), vdo_prepare_slab_depot_to_allocate(9)
• vdo_update_slab_depot_size(9), vdo_prepare_to_grow_slab_depot(9)
• finish_registration(9), vdo_use_new_slabs(9), stop_scrubbing(9)
• vdo_drain_slab_depot(9), resume_scrubbing(9), vdo_resume_slab_depot(9)
• vdo_commit_oldest_slab_journal_tail_blocks(9)
• vdo_scrub_all_unrecovered_slabs(9), get_block_allocator_statistics(9)
• get_ref_counts_statistics(9), get_slab_journal_statistics(9)
• vdo_get_slab_depot_statistics(9), vdo_dump_slab_depot(9)

and that’s the whole SEE ALSO gang — iconic, honestly 👑💖

mwah 💋 — this page’s source/version is ./drivers/md/dm-vdo, and the date is October 2026; that’s the footer, and yes it ate 🫶