centos man page for __blk_end_request

__BLK_END_REQUEST(9)						   Block Devices					      __BLK_END_REQUEST(9)

NAME
       __blk_end_request - Helper function for drivers to complete the request.

SYNOPSIS
       bool __blk_end_request(struct request * rq, int error, unsigned int nr_bytes);

ARGUMENTS
       rq
	   the request being processed

       error
	   0 for success, < 0 for error

       nr_bytes
	   number of bytes to complete

DESCRIPTION
       Must be called with queue lock held unlike blk_end_request.

RETURN
       false - we are done with this request true - still buffers pending for this request

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      __BLK_END_REQUEST(9)