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

       The function gfs_pio_datasync flushes data on memory of the gf, and waits for the I/O to complete before
       returning. It does not update metadtata stat information, while another function gfs_pio_sync updates the
       metadata in addition to the contents.

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

GFARM_ERR_NO_ERROR
           The function terminated successfully.

       GFARM_ERR_NO_MEMORY
           Insufficient memory was available.

       Others
           An error except the above occurred. The reason is shown by gfarm_error_string(3).

gfs_pio_sync(3), gfs_pio_create(3), gfs_pio_open(3), gfs_pio_write(3), gfs_pio_flush(3)

Gfarm                                              20 Jun 2019                               GFS_PIO_DATASYNC(3)

#include<gfarm/gfarm.h>gfarm_error_tgfs_pio_datasync(GFS_Filegf);