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VFS_SYNC(9)		 BSD 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, 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.

BSD				 July 24, 1996				   BSD

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

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