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 4.8.                 January 2017                       BLK_RQ_ERR_BYTES(9)