.\" Automatically generated by Pandoc 2.9.2.1
.\"
.TH "" "" "2023-05-26" "PMDK - " "PMDK Programmer's Manual"
.hy
.\" SPDX-License-Identifier: BSD-3-Clause
.\" Copyright 2019, Intel Corporation
.SH NAME
.PP
\f[B]pmem2_config_set_length\f[R]() - set length in the pmem2_config
structure
.SH SYNOPSIS
.IP
.nf
\f[C]
#include <libpmem2.h>

struct pmem2_config;
int pmem2_config_set_length(struct pmem2_config *config, size_t length);
\f[R]
.fi
.SH DESCRIPTION
.PP
The \f[B]pmem2_config_set_length\f[R]() function configures the length
which will be used for mapping.
\f[I]*config\f[R] should be already initialized, please see
\f[B]pmem2_config_new\f[R](3) for details.
The \f[I]must be a multiple of the alignment required for the data
source which will be used for mapping alongside the config. To retrieve
the alignment required for specific instance of \f[R]pmem2_source** use
\f[B]pmem2_source_alignment\f[R](3).
By default, the length is equal to the size of the file that is being
mapped.
.SH RETURN VALUE
.PP
The \f[B]pmem2_config_set_length\f[R]() function always returns 0.
.SH SEE ALSO
.PP
\f[B]libpmem2\f[R](7), \f[B]pmem2_map_new\f[R](3),
\f[B]pmem2_source_alignment\f[R](3), \f[B]pmem2_config_new\f[R](3),
\f[B]sysconf\f[R](3) and \f[B]<https://pmem.io>\f[R]