'\" t
.\"     Title: bio_split
.\"    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: The Linux VFS
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "BIO_SPLIT" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "The Linux VFS"
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.SH "NAME"
bio_split \- split a bio
.SH "SYNOPSIS"
.HP \w'struct\ bio\ *\ bio_split('u
.BI "struct bio * bio_split(struct\ bio\ *\ " "bio" ", int\ " "sectors" ", gfp_t\ " "gfp" ", struct\ bio_set\ *\ " "bs" ");"
.SH "ARGUMENTS"
.PP
\fIbio\fR
.RS 4
bio to split
.RE
.PP
\fIsectors\fR
.RS 4
number of sectors to split from the front of
\fIbio\fR
.RE
.PP
\fIgfp\fR
.RS 4
gfp mask
.RE
.PP
\fIbs\fR
.RS 4
bio set to allocate from
.RE
.SH "DESCRIPTION"
.PP
Allocates and returns a new bio which represents
\fIsectors\fR
from the start of
\fIbio\fR, and updates
\fIbio\fR
to represent the remaining sectors\&.
.PP
Unless this is a discard request the newly allocated bio will point to
\fIbio\fR\*(Aqs bi_io_vec; it is the caller\*(Aqs responsibility to ensure that
\fIbio\fR
is not freed before the split\&.
.SH "COPYRIGHT"
.br