get_depot_slab_iterator(9)

✨ get_depot_slab_iterator(9) ✨

hii bestie 💖 welcome to the Kernel API Manual, specifically the one (1) page about get_depot_slab_iterator(9) — it's giving "small function, huge friend group" and honestly? we love that for it.

🌸 NAME 🌸

get_depot_slab_iterator — Return a slab_iterator over the slabs in a slab_depot. that's it, that's the whole job, and it does it beautifully. 🫶

✨ SYNOPSIS ✨

struct slab_iterator get_depot_slab_iterator (struct slab_depot *depot ,
       slab_count_t start , slab_count_t end , slab_count_t stride );

🎀 ARGUMENTS 🎀

• depot — the slab_depot you're gonna iterate over. your main character. 👑
• start — the number of the slab to start iterating from. where the little journey begins, no cap.
• end — the number of the last slab which may be returned. like, the absolute cut-off, do not pass go. 🚫
• stride — the difference in slab number between successive slabs. how big your steps are. it's giving "skip, skip, skip". 🦋

🦋 DESCRIPTION 🦋

okay so this is the important bit and I need you to internalize it: iteration always occurs from higher to lower numbered slabs. highkey going down, never up. 📉 not me warning you about the direction like it's a one-way street, but it literally is. periodt.

💖 RETURN 💖

An initialized iterator structure. that's it — you get a whole ready-to-go iterator back, all dressed up and ready to vibe. 💅

👑 SEE ALSO 👑

bestie. sit down. this is the friend group, and it is large. 🫠 Kernel file ./drivers/md/dm-vdo/slab-depot.c plus:

• get_lock(9), 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), next_slab(9), abort_waiter(9)
• vdo_acquire_provisional_reference(9), open_slab(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 page bestie, you ate it up 💅 this little gem lives in ./drivers/md/dm-vdo and the version vibes are dated October 2026 — iconic, timeless, fr fr. 🎀✨