trace_block_rq_insert(9)

💖 trace_block_rq_insert(9) 💖

okay so hi bestie, this page is from the Kernel API Manual, and it’s giving “tiny function, very specific moment” energy. no cap, it’s all about catching a block request right before it gets inserted into a queue. 🦋

🌸 NAME 🌸

trace_block_rq_insert — insert block operation request into queue. literally the name says it all, and it ate. 💅

✨ SYNOPSIS ✨

the whole signature, exactly as it appears, bestie:

void trace_block_rq_insert (struct request *rq );

🎀 ARGUMENTS 🎀

• rq — block IO operation request. that’s the request we’re looking at, periodt. 🫶

🔥 DESCRIPTION 🔥

Called immediately before block operation request rq is inserted into queue q. so like, right before it slides into the queue, this function gets its main character moment. 👑

The fields in the operation request rq struct can be examined to determine which device and sectors the pending operation would access. peek at the struct and you can figure out which device and sectors the pending operation would hit — useful, lowkey. 🌈

🦋 SEE ALSO 🦋

Kernel file: ./include/trace/events/block.h — go look at it, bestie. the whole friend group of related pages is here:

• 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_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_block_getrq(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)

okay that’s the page! source/version is ./include/trace/events, and the date on this cutie is October 2026. bye bestie, go trace those block requests responsibly 💜✨