queue_limits_set(9)

💅 queue_limits_set (Kernel API Manual) 🎀

okay so bestie, welcome to the kernel API manual, and today's main character is queue_limits_set — the function that literally just applies queue limits to a queue. slay.

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✨ NAME ✨

queue_limits_set — apply queue limits to queue. that's it, that's the whole vibe. 🌸

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🦋 SYNOPSIS 🦋

int queue_limits_set (struct request_queue *q , struct queue_limits *lim );

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💖 ARGUMENTS 💖

• q — the queue to update. this is the one getting a glow-up ✨
• lim — the limits to apply. the actual content of the glow-up 💅

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👑 DESCRIPTION 👑

so here's the tea 🍓: this applies the limits in lim — which were freshly initialized, no cap — to q. brand new limits, brand new queue, iconic behavior.

⚠️ but bestie listen: if you're trying to update limits that already exist, this is not the move. use queue_limits_start_update and queue_limits_commit_update instead, fr fr. 🙈

returns 0 if it worked, otherwise a negative error code 😭 — so like, check that return value, iykyk.

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🔥 SEE ALSO 🔥

kernel file ./block/blk-settings.c, plus the whole squad:

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

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and that's the page, bestie 🫶 — brought to you by the fine folks at ./block, October 2026, and it's literally queue_limits_set(9) signing off 💜✨🎀