centos man page for atapi_drain_needed

ATAPI_DRAIN_NEEDED(9)					  libata SCSI translation/emulat				     ATAPI_DRAIN_NEEDED(9)

NAME
       atapi_drain_needed - Check whether data transfer may overflow

SYNOPSIS
       int atapi_drain_needed(struct request * rq);

ARGUMENTS
       rq
	   request to be checked

DESCRIPTION
       ATAPI commands which transfer variable length data to host might overflow due to application error or hardare bug. This function checks
       whether overflow should be drained and ignored for request.

LOCKING
       None.

RETURNS
       1 if ; otherwise, 0.

AUTHOR
       Jeff Garzik
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						     ATAPI_DRAIN_NEEDED(9)