trace_block_io_start(9)

💅 trace_block_io_start(9) ✨

okay so bestie, welcome to the Kernel API Manual — today’s main character is trace_block_io_start(9), and it’s giving “tiny function, very specific job.” 🫶

🌸 NAME 🌸

trace_block_io_start — insert a request for execution

✨ SYNOPSIS ✨

void trace_block_io_start (struct request *rq );

🎀 ARGUMENTS 🎀

• rq — block IO operation request. That’s the one and only argument, bestie. 👑

🦋 DESCRIPTION 🦋

Called when block operation request rq is queued for execution. That’s the whole plot — rq gets queued for execution, and this function is called. No cap. ✨

🔥 SEE ALSO 🔥

Kernel file: ./include/trace/events/block.h

The whole squad 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_insert(9)
• trace_block_rq_issue(9)
• trace_block_rq_merge(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)

mwah 🫶 this page is serving from ./include/trace/events, dated October 2026, and yes — it’s still trace_block_io_start(9) until the very end. periodt. 💖