'\" t
.\"     Title: disk_map_sector_rcu
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Block Devices
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "DISK_MAP_SECTOR_RCU" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Block Devices"
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.SH "NAME"
disk_map_sector_rcu \- map sector to partition
.SH "SYNOPSIS"
.HP \w'struct\ hd_struct\ *\ disk_map_sector_rcu('u
.BI "struct hd_struct * disk_map_sector_rcu(struct\ gendisk\ *\ " "disk" ", sector_t\ " "sector" ");"
.SH "ARGUMENTS"
.PP
\fIdisk\fR
.RS 4
gendisk of interest
.RE
.PP
\fIsector\fR
.RS 4
sector to map
.RE
.SH "DESCRIPTION"
.PP
Find out which partition
\fIsector\fR
maps to on
\fIdisk\fR\&. This is primarily used for stats accounting\&.
.SH "CONTEXT"
.PP
RCU read locked\&. The returned partition pointer is valid only while preemption is disabled\&.
.SH "RETURN"
.PP
Found partition on success, part0 is returned if no partition matches
.SH "COPYRIGHT"
.br