trace_block_getrq(9)

✨ trace_block_getrq(9) ✨

okay so bestie, welcome to the Kernel API Manual — this one's a tracepoint page, and it's lowkey a little guy but it SLAPS 🎀

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🌸 NAME 🌸

trace_block_getrq — get a free request entry in queue for block IO operations

like, it's the moment a request struct gets scooped up out of the queue so a block IO op can actually happen. main character energy fr 💅

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⭐ SYNOPSIS ⭐

void trace_block_getrq (struct bio *bio );

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🦋 ARGUMENTS 🦋

• bio — the pending block IO operation (and yes, it can be NULL 🙈 — no cap, that's allowed here)

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💖 DESCRIPTION 💖

So here's the tea 🍓: a request struct has been allocated to handle the block IO operation bio. That's it, that's the whole vibe — the request got its little slot, the tracepoint fires, we all move on. iconic behavior honestly ✨

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🎀 SEE ALSO 🎀

Kernel file ./include/trace/events/block.h — and then the whole friend group, all 22 of them, no one gets left out 🫶

• trace_block_touch_buffer(9)
• trace_block_dirty_buffer(9)
• trace_block_rq_requeue(9)
• trace_block_rq_complete(9)
• trace_block_rq_error(9)
• trace_block_rq_tag_wait(9)
• trace_block_rq_insert(9)
• trace_block_rq_issue(9)
• trace_block_rq_merge(9)
• trace_block_io_start(9)
• trace_block_io_done(9)
• trace_block_bio_complete(9)
• trace_block_bio_backmerge(9)
• trace_block_bio_frontmerge(9)
• trace_block_bio_queue(9)
• trace_blk_zone_append_update_request_bio(9)
• trace_block_plug(9)
• trace_block_unplug(9)
• trace_block_split(9)
• trace_block_bio_remap(9)
• trace_block_rq_remap(9)
• trace_blkdev_zone_mgmt(9)

go read them all, iykyk 💜

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anyway that's the page!! it lives in ./include/trace/events, it's dated October 2026, and it's literally titled trace_block_getrq(9) — so you know exactly where to find it again. mwah 💋✨