launch_data_...cal_callback(9)

💅 launch_data_...cal_callback(9)

okay bestie, welcome to the Kernel API Manual ✨ this one's a little cutie from the kernel docs — short, sweet, and honestly leaving us a bit on read, but we move 🫶

🌸 NAME

launch_data_vio_logical_callback — sets a callback as a logical block operation and then invokes it immediately, like no waiting, no chill, right now 🔥

✨ SYNOPSIS

void launch_data_vio_logical_callback (struct data_vio *data_vio ,
callback );

wait — the line wraps, so read it as one vibe:

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

it's void, so it gives nothing back — it's giving acts of service, not words of affirmation 😌

🎀 ARGUMENTS

• data_vio — the manpage literally says -- undescribed -- 😭 bestie the docs said "no thoughts, head empty" so that's genuinely all we have. it's a struct data_vio *, and that's the whole story.
• callback — same situation, -- undescribed -- 🙈 a vdo_action_fn, described by absolutely no one. iconic mystery, honestly.

ngl, the arguments section is highkey just vibes and a type signature — don't come for me, I'm reporting exactly what the page says 💀

🦋 SEE ALSO

• Kernel file ./drivers/md/dm-vdo/data-vio.h — the source of truth, go read it, iykyk 📖
• continue_data_vio_with_error(9)
• launch_data_vio_hash_zone_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_packer_callback(9)
• launch_data_vio_cpu_callback(9)
• launch_data_vio_bio_zone_callback(9)
• launch_data_vio_on_bio_ack_queue(9)

literally the whole callback friend group 👑 collect them all, they all slay in their own lane 💖

and that's the page, bestie — mwah 💋 this lil droplet of documentation came from ./drivers/md/dm-vdo and it's dated October 2026, so mark your calendar and stan a callback that fires instantly ⭐🌈