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, struct ucred *cred,
        struct thread *td);

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. Pos

sible values are:

MNT_WAIT synchronously wait for I/O to com

plete

MNT_NOWAIT start all I/O, but do not wait for

it

MNT_LAZY push data not written by file sys

tem syncer

cred The caller's credentials.

td The calling thread.

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.

BSD January 7, 2005

BSD