blk_set_queue_depth(9)

💅 blk_set_queue_depth(9) — the Kernel API Manual page your bestie needed

okay so welcome to the Kernel API Manual, section 9, and today's main character is blk_set_queue_depth, which is literally just "tell the block layer about the device queue depth." That's the whole vibe. No cap. 🎀

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✨ NAME ✨

blk_set_queue_depth — tell the block layer about the device queue depth

Like... you're just letting the block layer know how deep the device queue goes. That's it. That's the function. 🫶

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🌸 SYNOPSIS 🌸

void blk_set_queue_depth (struct request_queue *q , unsigned int depth
);

Not me writing the signature out exactly like this:

void blk_set_queue_depth(struct request_queue *q, unsigned int depth);

Returns void, so there's no value coming back — it just does the thing and dips. 💅

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🦋 ARGUMENTS 🦋

• q — the request queue for the device. this is the queue bestie, the whole point, the main character energy ✨
• depth — queue depth. an unsigned int, iconic, no notes 🌈

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👑 SEE ALSO 👑

so if you're going down the rabbit hole (and you will), the kernel file ./block/blk-settings.c is where this lives, and here's the whole friend group, lowkey:

• blk_set_stacking_limits(9)
• queue_limits_commit_update(9)
• queue_limits_commit_update_frozen(9)
• queue_limits_set(9)
• blk_stack_limits(9)
• queue_limits_stack_bdev(9)
• queue_limits_stack_integrity(9)

go read those too, iykyk 🔥

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and that's the page!! sign-off time 🧚: this lil beauty comes from ./block, and it's dated October 2026. periodt. 💖 ⭐