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Command: VFS_SYNC | Section: 9 | Source: FreeBSD | File: VFS_SYNC.9.gz
VFS_SYNC(9) FreeBSD Kernel Developer's Manual VFS_SYNC(9)
NAME
VFS_SYNC - flush unwritten data
SYNOPSIS
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/vnode.h>
int
VFS_SYNC(struct mount *mp, int waitfor);
DESCRIPTION
The VFS_SYNC() macro writes out all unwritten data in the file system
mounted as mp.
The arguments it expects are:
mp The file system.
waitfor Whether the function should wait for I/O to complete. Possible
values are:
MNT_WAIT synchronously wait for I/O to complete
MNT_NOWAIT start all I/O, but do not wait for it
MNT_LAZY push data not written by file system syncer
The VFS_SYNC() macro calls the vfs_sync method of the file system, which
normally calls VOP_FSYNC(9) for all the vnodes in the file system.
SEE ALSO
fsync(2), sync(2), VFS(9), vnode(9), VOP_FSYNC(9)
AUTHORS
This manual page was written by Doug Rabson.
FreeBSD 14.1-RELEASE-p8 May 23, 2009 FreeBSD 14.1-RELEASE-p8