gfs_pio_datasync
Name
gfs_pio_datasync -- output a file's data on memroy to disk
Synopsis
char *gfs_pio_datasync(GFS_File gf);
DESCRIPTION
The function gfs_pio_datasync copies data on
memory of the gf, and waits for the I/O
 to complete before returning.  It does nod  update metadtata stat
information, while another function
gfs_pio_sync updates the metadata in addition to
the contents.
RETURN VALUES
- NULL
- The function terminated successfully. 
- GFARM_ERR_NO_MEMORY
- Insufficient memory was available. 
- Others
- An error except the above occurred.  The reason is shown by its
pointed strings. 
SEE ALSO
gfs_pio_sync(3),
gfs_pio_create(3),
gfs_pio_open(3),
gfs_pio_write(3),
gfs_pio_flush(3)