'\" t
.\"     Title: blk_limits_max_hw_sectors
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Block Devices
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "BLK_LIMITS_MAX_HW_SE" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Block Devices"
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.SH "NAME"
blk_limits_max_hw_sectors \- set hard and soft limit of max sectors for request
.SH "SYNOPSIS"
.HP \w'void\ blk_limits_max_hw_sectors('u
.BI "void blk_limits_max_hw_sectors(struct\ queue_limits\ *\ " "limits" ", unsigned\ int\ " "max_hw_sectors" ");"
.SH "ARGUMENTS"
.PP
\fIlimits\fR
.RS 4
the queue limits
.RE
.PP
\fImax_hw_sectors\fR
.RS 4
max hardware sectors in the usual 512b unit
.RE
.SH "DESCRIPTION"
.PP
Enables a low level driver to set a hard upper limit, max_hw_sectors, on the size of requests\&. max_hw_sectors is set by the device driver based upon the combined capabilities of I/O controller and storage device\&.
.PP
max_sectors is a soft limit imposed by the block layer for filesystem type requests\&. This value can be overridden on a per\-device basis in /sys/block/<device>/queue/max_sectors_kb\&. The soft limit can not exceed max_hw_sectors\&.
.SH "COPYRIGHT"
.br