vdo_uninitialize_layout(9)

💅 vdo_uninitialize_layout(9) — from the Kernel API Manual, bestie 🎀

okay so picture this: it's a kernel API manual page, the function is vdo_uninitialize_layout, and it lives in section 9. that's the whole vibe. let's get into it ✨

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✨ NAME ✨

vdo_uninitialize_layout — literally just clean up a layout. that's it. that's the function. 🧹🦋

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🌸 SYNOPSIS 🌸

void vdo_uninitialize_layout (struct layout *layout );

no return value, no drama, no notes. she's void and she's unbothered, periodt. 👑

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🎀 ARGUMENTS 🎀

• layout — the layout you're cleaning up. that's her. that's the one. hand her over and let the function do its thing 🫶

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💖 DESCRIPTION 💖

okay so here's the tea, and it's kind of a big deal: all partitions created by this layout become invalid pointers.

read that again. every partition that came out of this layout? after this call they're invalid pointers. not "stale", not "probably fine if you're careful" — invalid. so don't go touching them afterward, bestie, i'm begging 😭💀 that's undefined-behavior territory and we do not stan.

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⭐ SEE ALSO ⭐

the whole friend group, in the order the manual gives them, no gatekeeping 🫶 — and they all 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_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_encode_super_block(9)
• vdo_decode_super_block(9)
• vdo_initialize_component_states(9)
• vdo_compute_index_blocks(9)
• vdo_initialize_volume_geometry(9)

like… the way that list just keeps going?? highkey iconic. thirty-five baddies and every single one of them ate 🔥

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lowkey a reminder though: after vdo_uninitialize_layout runs, those partitions are invalid pointers. no cap. don't dereference them, don't be cute about it, don't "just check one field" 🙈

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okay that's the whole page, bestie!! this one came straight out of ./drivers/md/dm-vdo, dated October 2026 — mwah, kisses, go free your memory responsibly 💜✨🎀