blk_execute_rq(9)

💅 blk_execute_rq — the kernel API manual, bestie edition ✨

okay so you're reading blk_execute_rq(9) from the Kernel API Manual and honestly? it's giving "one job, does it flawlessly" energy. let's get into it 🫶

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🌸 NAME 🌸

blk_execute_rq — insert a request into queue for execution. that's it. that's the whole vibe. no cap.

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✨ SYNOPSIS ✨

blk_status_t blk_execute_rq (struct request *rq , bool at_head );

look at that signature. clean. iconic. two args and a blk_status_t return, periodt. 👑

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🎀 ARGUMENTS 🎀

• rq — the request to insert. this is the main character, the whole point, the one we're shipping off to the queue 💖
• at_head — insert request at head or tail of queue. literally just telling it where to cut in line, bestie 🧚

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🦋 DESCRIPTION 🦋

so here's the tea ☕: you insert a fully prepared request at the back of the I/O scheduler queue for execution, and then you wait for completion. not me just sitting here waiting for my request to finish like 😭 — but that's the deal, it's a blocking call through and through.

key word: fully prepared. don't come to this function half-ready, she expects the request to be done up already. 💅

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⭐ RETURN ⭐

the return value is the blk_status_t result that was provided to blk_mq_end_request. so whatever status got handed over at the end, that's what you get back. no surprises, no drama, just the status passed straight through 🌈

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💜 SEE ALSO 💜

bestie the cross-reference list is long and honestly we respect the hustle 💀 — also, kernel file ./block/blk-mq.c:

• blk_mq_wait_quiesce_done(9)
• blk_mq_quiesce_queue(9)
• blk_update_request(9)
• blk_mq_complete_request(9)
• blk_mq_start_request(9)
• blk_execute_rq_nowait(9)
• blk_mq_delay_run_hw_queue(9)
• blk_mq_run_hw_queue(9)
• blk_mq_run_hw_queues(9)
• blk_mq_delay_run_hw_queues(9)
• blk_mq_request_bypass_insert(9)
• blk_mq_try_issue_directly(9)
• blk_mq_submit_bio(9)
• blk_insert_cloned_request(9)
• blk_rq_unprep_clone(9)
• blk_rq_prep_clone(9)
• blk_mq_destroy_queue(9)

go read them all, i'll wait 🍓

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ngl if you got this far you're lowkey a kernel girlie now. proud of you fr fr 💖

anyway that's the page!! this little love letter lives in ./block, dated October 2026, and it's filed under blk_execute_rq(9) — slay, go execute some requests responsibly ✨🎀💅