VFS_SYNC — flush unwritten data

       This manual page was written by Doug Rabson.

Debian                                            May 23, 2009                                       VFS_SYNC(9)

       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.

       VFS_SYNC — flush unwritten data

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

#include<sys/param.h>#include<sys/mount.h>#include<sys/vnode.h>intVFS_SYNC(structmount*mp, intwaitfor);