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

     This writes out all unwritten data in a file system.

     Its arguments 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

     cred     The caller's credentials.

     td       The calling thread.

     This would normally call VOP_FSYNC(9) for all the vnodes in the file sys-
     tem.

SEE ALSO

     fsync(2), sync(2), VFS(9), vnode(9), VOP_FSYNC(9)

AUTHORS

     This manual page was written by Doug Rabson.