attempt_logical_block_lock(9)

💅 attempt_logical_block_lock(9) — a Kernel API Manual moment

okay so bestie, welcome to attempt_logical_block_lock, a page from the Kernel API Manual, and honestly? it's giving short-but-iconic. tiny page, huge main character energy. let's get into it 🎀

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✨ NAME ✨

attempt_logical_block_lock — the "lemme try to grab the lock on a logical block" girlie 💅 that's literally it, that's the whole job.

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🌸 SYNOPSIS 🌸

void attempt_logical_block_lock (struct vdo_completion *completion );

yes bestie, it returns void — no notes back, no little status code, she just does the thing. 🫶

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🦋 ARGUMENTS 🦋

• completion — the data_vio for an external data request, wearing its completion hat 🎩. that's the one and only thing you hand her.

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⭐ DESCRIPTION ⭐

so here's the tea ☕ — this function is the start of the path for all external requests. like, everyone coming in from the outside starts their little journey right here. main character entrance fr fr 👑

and where does she get registered? in launch_data_vio. that's the plug 🔌 — remember that name, iykyk.

ngl that's the whole description. she's short, she's sweet, she's the front door. periodt. 💀

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🔥 SEE ALSO 🔥

okay this is the part where the page absolutely ate — the cross-reference list is enormous and i'm obsessed. go read these next, bestie, no cap:

• Kernel file ./drivers/md/dm-vdo/data-vio.c
• Bio flags.(9)
• Introduction(9)
• check_for_drain_complete_locked(9)
• pack_status(9)
• set_data_vio_compression_status(9)
• cancel_data_vio_compression(9)
• launch_data_vio(9)
• schedule_releases(9)
• process_release_callback(9)
• initialize_data_vio(9)
• make_data_vio_pool(9)
• free_data_vio_pool(9)
• vdo_launch_bio(9)
• drain_data_vio_pool(9)
• resume_data_vio_pool(9)
• dump_data_vio_pool(9)
• release_allocated_lock(9)
• release_logical_lock(9)
• finish_cleanup(9)
• get_data_vio_operation_name(9)
• data_vio_allocate_data_block(9)
• release_data_vio_allocation_lock(9)
• uncompress_data_vio(9)
• modify_for_partial_write(9)
• read_block(9)
• update_block_map(9)
• read_old_block_mapping(9)
• pack_compressed_data(9)
• compress_data_vio(9)
• launch_compress_data_vio(9)
• hash_data_vio(9)
• write_bio_finished(9)
• acknowledge_write_callback(9)
• allocate_block(9)
• handle_allocation_error(9)
• continue_data_vio_with_block_map_slot(9)

like, thirty-something pages?? she said "you will NOT be bored after me" 😭🌈 we love a generous queen.

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and that's the whole page, bestie 🧚💜 — sign-off time: this lil masterpiece lives in ./drivers/md/dm-vdo, stamped October 2026, and yes it's still attempt_logical_block_lock(9) in case you forgot in the last ninety seconds 🙈💖 slay!!