vdo_encode_super_block(9)

💖 vdo_encode_super_block — kernel API manual, but make it make sense 💖

okay bestie, so this one is a kernel API page for vdo_encode_super_block(9) and honestly? It's a tiny little function that does one extremely specific glow-up: it takes your super block and turns it into the on-disk representation. That's the whole vibe. No cap.

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✨ NAME ✨

vdo_encode_super_block — encode a super block into its on-disk representation. literally that's it, that's the job 🎀

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🌸 SYNOPSIS 🌸

void vdo_encode_super_block (u8 *buffer , struct vdo_component_states *states );

note the void — it's giving "I don't return anything, I just do the work and leave" 💅

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🦋 ARGUMENTS 🦋

• buffer — a buffer to store the encoding. that's the little canvas where the encoded super block goes 🎨
• states — the component states to encode. this is the main character being transformed into bytes 👑

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🔥 SEE ALSO 🔥

okay this list is long — grab a snack, because the whole friend group is here. These live in the kernel file ./drivers/md/dm-vdo/encodings.c:

• validate_version(9)
• vdo_validate_header(9)
• decode_volume_geometry(9)
• vdo_encode_volume_geometry(9)
• vdo_parse_geometry_block(9)
• vdo_compute_new_forest_pages(9)
• encode_recovery_journal_state_7_0(9)
• decode_recovery_journal_state_7_0(9)
• vdo_get_journal_operation_name(9)
• encode_slab_depot_state_2_0(9)
• decode_slab_depot_state_2_0(9)
• vdo_configure_slab_depot(9)
• vdo_configure_slab(9)
• vdo_decode_slab_journal_entry(9)
• allocate_partition(9)
• make_partition(9)
• vdo_initialize_layout(9)
• vdo_uninitialize_layout(9)
• vdo_get_partition(9)
• vdo_get_known_partition(9)
• pack_vdo_config(9)
• pack_vdo_component(9)
• unpack_vdo_config(9)
• unpack_vdo_component_41_0(9)
• decode_vdo_component(9)
• vdo_validate_config(9)
• vdo_destroy_component_states(9)
• decode_components(9)
• vdo_decode_component_states(9)
• vdo_validate_component_states(9)
• vdo_encode_component_states(9)
• vdo_decode_super_block(9)
• vdo_initialize_component_states(9)
• vdo_compute_index_blocks(9)
• vdo_initialize_volume_geometry(9)

like I said. the whole group chat 🫶

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okay that's the page!! sign-off time: this one comes out of the kernel source tree at ./drivers/md/dm-vdo, dated October 2026 — so yeah, future vibes only ⭐ slay, go encode something, periodt 💜