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.
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