BLK_RQ_ERR_BYTES(9) Block Devices BLK_RQ_ERR_BYTES(9)
NAME
blk_rq_err_bytes - determine number of bytes till the next failure boundary
SYNOPSIS
unsigned int blk_rq_err_bytes(const struct request * rq);
ARGUMENTS
rq
request to examine
DESCRIPTION
A request could be merge of IOs which require different failure handling. This function determines the number of bytes which can be failed
from the beginning of the request without crossing into area which need to be retried further.
RETURN
The number of bytes to fail.
CONTEXT
queue_lock must be held.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 BLK_RQ_ERR_BYTES(9)
