'\" t
.\"     Title: blk_add_trace_bio
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: April 2019
.\"    Manual: Block Devices
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "BLK_ADD_TRACE_BIO" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "Block Devices"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
blk_add_trace_bio \- Add a trace for a bio oriented action
.SH "SYNOPSIS"
.HP \w'void\ blk_add_trace_bio('u
.BI "void blk_add_trace_bio(struct\ request_queue\ *\ " "q" ", struct\ bio\ *\ " "bio" ", u32\ " "what" ", int\ " "error" ");"
.SH "ARGUMENTS"
.PP
\fIq\fR
.RS 4
queue the io is for
.RE
.PP
\fIbio\fR
.RS 4
the source bio
.RE
.PP
\fIwhat\fR
.RS 4
the action
.RE
.PP
\fIerror\fR
.RS 4
error, if any
.RE
.SH "DESCRIPTION"
.PP
Records an action against a bio\&. Will log the bio offset + size\&.
.SH "COPYRIGHT"
.br