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.