vdo_is_valid...urnal_sector(9)

💖 NAME 💖

okay so bestie, welcome to the Kernel API Manual — this is vdo_is_valid_recovery_journal_sector, and what she does is ✨ determine whether the header of the given sector could describe a valid sector for the given journal block header ✨. that's the whole vibe check she's running. no cap 🫶

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📜 SYNOPSIS 📜

bool vdo_is_valid_recovery_journal_sector (const struct
recovery_block_header *header , const struct packed_journal_sector
*sector , u8 sector_number );

look at her. iconic signature, zero notes 💅

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🎀 ARGUMENTS 🎀

• header — the unpacked block header, aka the one you're comparing against. this is the reference point, the main character, the standard she's holding everybody to 👑
• sector — the packed sector you want her to check. still in its little packed form, bless 💀
• sector_number — the number of the sector being checked. like a name tag but for a sector, iykyk 🌸

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⭐ RETURN ⭐

she hands back true if the sector matches the block header. that's it. that's the answer. slay 🌈

ngl bestie, that's literally the whole thing — true = match, and that's the only value documented here. don't go inventing extra meanings 🙈

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🦋 SEE ALSO 🦋

the whole friend group 🫶 — go say hi:

• Kernel file ./drivers/md/dm-vdo/encodings.h
• 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_compute_recovery_journal_block_number(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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and that's the page, bestie!! this lil beauty lives over in ./drivers/md/dm-vdo, and she's stamped October 2026 — so like, future icon behavior honestly. mwah 💋✨💜