lib/libc/sys/sync.2 - master - nerfur/openbsd-src

lib/libc/sys/sync.2
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naddy
man pages: add missing commas between subordinate and main clauses
31 мар 2022, 20:27
31 мар 2022, 20:2741ce3b1
.\"	$OpenBSD: sync.2,v 1.17 2022/03/31 17:27:16 naddy Exp $
.\"	$NetBSD: sync.2,v 1.4 1995/02/27 12:38:41 cgd Exp $
.\"
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.\"     @(#)sync.2	8.1 (Berkeley) 6/4/93
.\"
.Dd $Mdocdate: March 31 2022 $
.Dt SYNC 2
.Os
.Sh NAME
.Nm sync
.Nd synchronize disk block in-core status with that on disk
.Sh SYNOPSIS
.In unistd.h
.Ft void
.Fn sync void
.Sh DESCRIPTION
The
.Fn sync
function forces a write of dirty (modified) buffers
in the block buffer cache out to disk.
The kernel keeps this information in core to reduce
the number of disk I/O transfers required by the system.
As information in the cache is lost after a system crash, a
.Fn sync
call is issued frequently by the in-kernel process update
(about every 30 seconds).
.Pp
The function
.Xr fsync 2
may be used to synchronize individual file descriptor attributes.
.Sh SEE ALSO
.Xr fsync 2 ,
.Xr sync 8
.Sh STANDARDS
The
.Fn sync
function conforms to
.St -p1003.1-2008 .
.Sh HISTORY
A
.Fn sync
function appeared in
.At v2 .
.Sh BUGS
.Fn sync
may return before the buffers are completely flushed.