submit_bio() flush to disk immediately

[Prashant Shah]

Hi,

I am trying to write a bio to a disk block directly using
submit_bio(), it works without any errors but on read it shows the old
data until I reboot the machine. Is there any way I can flush the
particular bio/dirty page immediately or force it to flush before the
next read ?

code :
https://github.com/prashants/km/blob/master/writeblock/writeblock.c

Regards.