scsi_host_busy_iter(9)

💅 scsi_host_busy_iter(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in the SCSI layer, and you need to walk every single busy command on a host. that's it. that's the function. she's a little iterator and she ate. ✨

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🌸 NAME 🌸

scsi_host_busy_iter — literally iterate over all busy commands. all of them. the busy ones. no cap. 🦋

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⭐ SYNOPSIS ⭐

void scsi_host_busy_iter (struct Scsi_Host *shost , bool (*fn)(struct scsi_cmnd *, void *) , void *priv );

look at her signature, she's gorgeous, don't touch it 🙈

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🎀 ARGUMENTS 🎀

• shost — a pointer to Scsi_Host. your host. your main character. 👑
• fn — the function to call on each busy command. every single one gets a little visit from fn 🫶
• priv — the data pointer that gets passed straight through to fn. like a little care package, hand-delivered 💖

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✨ DESCRIPTION ✨

so here's the vibe check: if you need locking against concurrent command completions, the caller has to provide it. that's on you, bestie. the function is not doing it for you and honestly? she's not sorry. 😭

fr fr, read that again — the locking is your job, not hers 💀

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🌈 SEE ALSO 🌈

kernel file ./drivers/scsi/hosts.c, plus the whole friend group:

• scsi_host_set_state(9)
• scsi_remove_host(9)
• scsi_add_host_with_dma(9)
• scsi_host_alloc(9)
• scsi_host_lookup(9)
• scsi_host_get(9)
• scsi_host_busy(9)
• scsi_host_put(9)
• scsi_queue_work(9)
• scsi_flush_work(9)
• scsi_host_complete_all_commands(9)

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and that's the whole page, babe 💜 she lives in ./drivers/scsi, she's stamped October 2026, and this has been your girl reporting live from the Kernel API Manual — slay, go read your kernel source, mwah 🧚🍓