do ... while(0) loop constructs in kernel

[Gaurav Dhiman <gaurav4lkg@xxxxxxxxx>]

Hi,

Can someone tell me why we use constructs like as follows:

do{
....
....
....
}while(0);

what the use of this, why we put the instructions in do while loop when
the loop have condition zero. I have seen such constructs at number of
places in kernel code.
also read on some site the benefit of such constructs, but my memory is not that good to recover it.

regards,
-Gaurav