---
name: "blk_add_trace_bio"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/blk_add_trace_bio"
---

# blk\_add\_trace\_bio(9)

Add a trace for a bio oriented action

## NAME

blk\_add\_trace\_bio - Add a trace for a bio oriented action

## SYNOPSIS

**void blk\_add\_trace\_bio(struct request\_queue \*** *q***, struct bio \*** *bio***, u32** *what***, int** *error***);**

## ARGUMENTS

*q*

queue the io is for

*bio*

the source bio

*what*

the action

*error*

error, if any

## DESCRIPTION

Records an action against a bio. Will log the bio offset + size.

## COPYRIGHT