D40270.diff
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	diff --git a/usr.bin/posixshmcontrol/posixshmcontrol.1 b/usr.bin/posixshmcontrol/posixshmcontrol.1
	--- a/usr.bin/posixshmcontrol/posixshmcontrol.1
	+++ b/usr.bin/posixshmcontrol/posixshmcontrol.1
	@@ -27,7 +27,7 @@
	.\"
	.\" $FreeBSD$
	.\"
	-.Dd February 26, 2022
	+.Dd May 25, 2023
	.Dt POSIXSHMCONTROL 1
	.Os
	.Sh NAME
	@@ -36,6 +36,7 @@
	.Sh SYNOPSIS
	.Nm
	.Ar create
	+.Op Fl l Ar pagesize
	.Op Fl m Ar mode
	.Op Pa path \&...
	.Nm
	@@ -79,10 +80,24 @@
	The following subcommands are provided:
	.Bl -tag -width truncate
	.It Ic create
	-Create segments with the specified paths, if not exist.
	+Create segments with the specified paths, if they do not already exist.
	+.Pp
	+The optional
	+.Ar pagesize
	+argument specifies the size of the virtual pages used to map the
	+object with
	+.Xr mmap 2 .
	+By default, the system page size is used, but on some platforms a
	+larger page size can be specified.
	+The size of an object backed by large pages must be a multiple of the
	+specified page size.
	The
	+.Va hw.pagesizes
	+sysctl variable lists the available page sizes.
	+.Pp
	+The optional numerical
	.Ar mode
	-optional numerical argument specifies initial access mode.
	+argument specifies the initial access mode.
	.It Ic rm
	Unlink the paths specified.
	.It Ic ls
	@@ -138,12 +153,14 @@
	.Xr hexdump 1 ,
	.Xr stat 1 ,
	.Xr ftruncate 2 ,
	+.Xr mmap 2 ,
	.Xr read 2 ,
	.Xr shm_open 2 ,
	.Xr shm_unlink 2 ,
	.Xr stat 2 ,
	.Xr expand_number 3 ,
	.Xr humanize_number 3 ,
	+.Xr shm_create_largepage 3 ,
	.Xr sysctl 3
	.Sh HISTORY
	The