launch_data...ker_callback(9)

bestie, welcome to launch_data_vio_packer_callback(9) 🎀

okay so this page is from the Kernel API Manual, and its header title is the truncated launch_data...ker_callback(9). The actual function is launch_data_vio_packer_callback, and it's short, sweet, and lowkey iconic. Let's get into it. ✨

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NAME 🌸

launch_data_vio_packer_callback — set a callback as a packer operation and invoke it immediately. periodt. 💅

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SYNOPSIS ✨

the signature is literally this, bestie:

void launch_data_vio_packer_callback (struct data_vio *data_vio ,
vdo_action_fn callback );

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ARGUMENTS 💅

• data_vio — -- undescribed -- 🙈 the original really left it at that, no cap.
• callback — -- undescribed -- 😭 same energy, also undescribed.

bestie, I'm not gatekeeping the lore: the source itself marks both of these as undescribed. That's the whole tea. 🫖

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SEE ALSO 🦋

Kernel file ./drivers/md/dm-vdo/data-vio.h — it's listed right there, verbatim.

the whole callback squad is here:

• continue_data_vio_with_error(9)
• launch_data_vio_hash_zone_callback(9)
• launch_data_vio_logical_callback(9)
• launch_data_vio_allocated_zone_callback(9)
• launch_data_vio_duplicate_zone_callback(9)
• launch_data_vio_journal_callback(9)
• launch_data_vio_cpu_callback(9)
• launch_data_vio_bio_zone_callback(9)
• launch_data_vio_on_bio_ack_queue(9)

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xoxo bestie 💖 — source/version ./drivers/md/dm-vdo, date October 2026, footer signature launch_data...ker_callback(9). slay and goodbye ✨