NAME

       gfs_pio_datasync - output a file's data on memroy to disk

SYNOPSIS

       #include <gfarm/gfarm.h>

       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)