'\" t
.\"     Title: blk_queue_physical_block_size
.\"    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 "BLK_QUEUE_PHYSICAL_B" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Block Devices"
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.SH "NAME"
blk_queue_physical_block_size \- set physical block size for the queue
.SH "SYNOPSIS"
.HP \w'void\ blk_queue_physical_block_size('u
.BI "void blk_queue_physical_block_size(struct\ request_queue\ *\ " "q" ", unsigned\ int\ " "size" ");"
.SH "ARGUMENTS"
.PP
\fIq\fR
.RS 4
the request queue for the device
.RE
.PP
\fIsize\fR
.RS 4
the physical block size, in bytes
.RE
.SH "DESCRIPTION"
.PP
This should be set to the lowest possible sector size that the hardware can operate on without reverting to read\-modify\-write operations\&.
.SH "COPYRIGHT"
.br