vdo_get_phys...cks_overhead(9)

🌸 NAME 🌸

okay so welcome to the vdo_get_phys...cks_overhead(9) page from the Kernel API Manual, bestie. this one is all about vdo_get_physical_blocks_overhead — she gets the number of physical blocks used by vdo metadata. overhead blocks? metadata accounting? we love a tidy little number, no cap 💅✨

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✨ SYNOPSIS ✨

here’s the signature, copy it exactly, do not let autocorrect touch her:

block_count_t vdo_get_physical_blocks_overhead (const struct vdo *vdo );

one argument, one return value, very demure, very mindful 🎀

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🎀 ARGUMENTS 🎀

• vdo — the vdo. literally the vdo. she is the whole argument and she knows it 👑💖

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🦋 RETURN 🦋

the number of overhead blocks. that’s the return value, periodt. just overhead blocks, nothing extra, we love a clean return 🫶

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🌈 SEE ALSO 🌈

bestie, this cross-reference list is long and iconic, so here is every single one — do not skip a single reference, iykyk 🧚💜

• Kernel file ./drivers/md/dm-vdo/vdo.c — Introduction(9)
• vdo_initialize_device_registry_once(9)
• filter_vdos_locked(9)
• vdo_find_matching(9)
• initialize_thread_config(9)
• get_thread_name(9)
• vdo_make_thread(9)
• register_vdo(9)
• vdo_format(9)
• initialize_vdo(9)
• vdo_make(9)
• free_listeners(9)
• unregister_vdo(9)
• vdo_destroy(9)
• finish_reading_super_block(9)
• handle_super_block_read_error(9)
• vdo_load_super_block(9)
• vdo_get_backing_device(9)
• vdo_get_device_name(9)
• vdo_synchronous_flush(9)
• vdo_get_state(9)
• vdo_set_state(9)
• vdo_get_admin_state(9)
• record_vdo(9)
• continue_parent(9)
• handle_geometry_block_save_error(9)
• vdo_save_geometry_block(9)
• handle_super_block_save_error(9)
• vdo_save_super_block(9)
• vdo_save_components(9)
• vdo_register_read_only_listener(9)
• notify_vdo_of_read_only_mode(9)
• vdo_enable_read_only_entry(9)
• vdo_wait_until_not_entering_read_only_mode(9)
• as_notifier(9)
• finish_entering_read_only_mode(9)
• make_thread_read_only(9)
• vdo_allow_read_only_mode_entry(9)
• vdo_enter_read_only_mode(9)
• vdo_is_read_only(9)
• vdo_in_read_only_mode(9)
• vdo_in_recovery_mode(9)
• vdo_enter_recovery_mode(9)
• complete_synchronous_action(9)
• perform_synchronous_action(9)
• set_compression_callback(9)
• vdo_set_compressing(9)
• vdo_get_compressing(9)
• vdo_get_physical_blocks_allocated(9)
• get_vdo_statistics(9)
• vdo_fetch_statistics_callback(9)
• vdo_fetch_statistics(9)
• vdo_get_callback_thread_id(9)
• vdo_dump_status(9)
• vdo_assert_on_admin_thread(9)
• vdo_assert_on_logical_zone_thread(9)
• vdo_assert_on_physical_zone_thread(9)
• vdo_get_physical_zone(9)

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that’s the whole page, bestie 💅 source/version: ./drivers/md/dm-vdo; date: October 2026; page: vdo_get_phys...cks_overhead(9). mwah 🫶🎀