vdo_compute...block_number(9)

💅 vdo_compute_recovery_journal_block_number(9) 💅

okay so we're in the Kernel API Manual bestie, welcome to the dm-vdo department of the kernel, it's giving very niche very iconic 🎀

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✨ NAME ✨

vdo_compute_recovery_journal_block_number — literally computes the physical block number of the recovery journal block that would have a given sequence number 🫶

🌸 SYNOPSIS 🌸

physical_block_number_t vdo_compute_recovery_journal_block_number
(block_count_t journal_size , sequence_number_t sequence_number );

like, that's the whole signature, no cap 🔥

🦋 ARGUMENTS 🦋

• journal_size — the size of the journal, periodt. that's the vibe, that's the value 💫
• sequence_number — the sequence number. yeah bestie that's it, that's the argument 🌈

👑 RETURN 👑

it hands you back the pbn of the journal block which would the specified sequence number 💖 (yes that's exactly what the original says and we're not editing the lore ngl)

🧚 SEE ALSO 🧚

Kernel file ./drivers/md/dm-vdo/encodings.h, and like, the entire extended universe of related functions, all of them, in this exact order, slay ⭐

• Block map entries(9)
• vdo_are_same_version(9)
• vdo_pack_version_number(9)
• vdo_unpack_version_number(9)
• vdo_pack_header(9)
• vdo_unpack_header(9)
• vdo_get_index_region_start(9)
• vdo_get_data_region_start(9)
• vdo_get_index_region_size(9)
• vdo_pack_recovery_journal_entry(9)
• vdo_unpack_recovery_journal_entry(9)
• vdo_is_valid_recovery_journal_sector(9)
• vdo_get_journal_block_sector(9)
• vdo_pack_recovery_block_header(9)
• vdo_unpack_recovery_block_header(9)
• vdo_compute_slab_count(9)
• vdo_get_saved_reference_count_size(9)
• vdo_get_slab_journal_start_block(9)
• vdo_advance_journal_point(9)
• vdo_before_journal_point(9)
• vdo_pack_journal_point(9)
• vdo_unpack_journal_point(9)
• vdo_pack_slab_journal_block_header(9)
• vdo_unpack_slab_journal_block_header(9)
• vdo_pack_slab_journal_entry(9)
• vdo_unpack_slab_journal_entry(9)
• vdo_get_slab_summary_hint_shift(9)

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ngl this one is a little short but she's still main character energy, don't underestimate her 💅

okay that's the whole page, love u, go read encodings.h 🍓

— sourced straight from ./drivers/md/dm-vdo, dated October 2026, mwah 😭💜