vdo_launch_bio(9)

🎀 NAME 🎀

okay so bestie, this is vdo_launch_bio(9) from the Kernel API Manual — and it’s literally the function that acquires a data_vio from the pool, assigns the bio to it, and launches it. slay. 💅✨

📜 SYNOPSIS 📜

void vdo_launch_bio (struct data_vio_pool *pool , struct bio *bio );

🌸 ARGUMENTS 🌸

• pool — the data_vio pool. like, the stash it pulls from. 🫶
• bio — the bio to launch. that’s the one getting sent into action. 🔥

✨ DESCRIPTION ✨

okay real talk: this will block if data_vios or discard permits are not available. no cap. 😭 it’s giving “wait for it, wait for it” energy.

💖 SEE ALSO 💖

bestie, please also peek at the kernel file ./drivers/md/dm-vdo/data-vio.c, plus 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), attempt_logical_block_lock(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), 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), and continue_data_vio_with_block_map_slot(9). the whole friend group. 👑🌈

xoxo, your kernel bestie 🧚💜 — this vdo_launch_bio(9) page comes from ./drivers/md/dm-vdo and it’s dated October 2026. periodt. 🎀