vdo_initial...onent_states(9)
π vdo_initialize_component_states(9) π
okay so bestie, welcome to the Kernel API Manual β¨ this one lives in the kernel source tree at ./drivers/md/dm-vdo, and it's fr fr one of those little functions that does exactly what its name says. no cap. π«Ά
β¨ NAME β¨
vdo_initialize_component_states β initializes the components so they can be written out π like, it's getting the whole squad dressed and ready to be photographed, y'know?
π¦ SYNOPSIS π¦
int vdo_initialize_component_states (const struct vdo_config *vdo_config
, const struct volume_geometry *geometry , nonce_t nonce , struct
vdo_component_states *states );
look at that signature. iconic. returns an int, takes four things, she's booked and busy π
π ARGUMENTS π
vdo_configβ the config used for component state initialization. this is the blueprint, the vibe check for how everything should be set up πgeometryβ the volume geometry used to calculate the data region offset. she's the one who knows where things go π¦nonceβ the nonce to use to identify the vdo. yes, like a little name tag for your vdo so you know it's yours πstatesβ the component states to initialize. this is the glow-up target β you hand it over and it comes back ready to be written out β¨
β RETURN β
VDO_SUCCESS or an error code. that's it, that's the tea π either she ate or she didn't, no in-between.
π SEE ALSO π
okay this list is long β like, alarmingly long β but we're not skipping a single one, bestie. take a deep breath π
Kernel file ./drivers/md/dm-vdo/encodings.c plus the whole extended friend group:
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_encode_super_block(9)vdo_decode_super_block(9)vdo_compute_index_blocks(9)vdo_initialize_volume_geometry(9)
like half the dm-vdo subsystem is in here. read them all. i'm so serious. π§
and that's the whole page, bestie π this one's from ./drivers/md/dm-vdo, dated October 2026 β mwah, go touch some kernel code β¨ππΈ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms