most_write_completion(9)

✨ most_write_completion — kernel API bestie edition 💅

okay so this is most_write_completion(9), a kernel API page, and it's genuinely one of the shorter ones so we can totally get through it together 🫶

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🌸 NAME 🌸

most_write_completion — the write completion handler, aka the little function that cleans up after a write is done ✨

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🎀 SYNOPSIS 🎀

void most_write_completion (struct mbo *mbo );

that's it. one function, one argument, no drama 💅

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🦋 ARGUMENTS 🦋

• mbo — the most buffer, bestie. that's the whole argument. it's giving "minimalist icon" 💖

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👑 DESCRIPTION 👑

so what does it do? This recycles the MBO for further usage. 🔁 like, it takes the buffer and puts it back in rotation so it can be used again — reduce, reuse, recycle but make it kernel ✨

In case the channel has been poisoned, the MBO is scheduled to be trashed. 💀 yeah, if the channel got poisoned then the MBO doesn't get recycled, it gets scheduled to be trashed instead. no cap, that's the whole behaviour.

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🌈 SEE ALSO 🌈

the whole friend group, fr fr — these all live in the kernel file ./drivers/most/core.c:

• list_pop_mbo(9)
• most_free_mbo_coherent(9)
• flush_channel_fifos(9)
• flush_trash_fifo(9)
• get_channel(9)
• arm_mbo(9)
• arm_mbo_chain(9)
• most_submit_mbo(9)
• most_get_mbo(9)
• most_put_mbo(9)
• most_read_completion(9)
• most_start_channel(9)
• most_stop_channel(9)
• most_register_component(9)
• most_deregister_component(9)
• most_register_interface(9)
• most_deregister_interface(9)
• most_stop_enqueue(9)
• most_resume_enqueue(9)

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and that's the page!! go read the whole squad above if you wanna understand the full picture, iykyk 🔥

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signed, sealed, delivered — from ./drivers/most 💌, October 2026 edition, most_write_completion(9) era 🧚⭐