blk_add_trace_bio_remap
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## Name

blk_add_trace_bio_remap — Add a trace for a bio-remap operation

## Synopsis

`void blk_add_trace_bio_remap (` | void * ignore,
| struct request_queue * q,
| struct bio * bio,
| dev_t dev,
| sector_t from`)`;

## Arguments

`ignore`

  trace callback data parameter (not used)

`q`

  queue the io is for

`bio`

  the source bio

`dev`

  target device

`from`

  source sector

## Description

Device mapper or raid target sometimes need to split a bio because it spans a stripe (or similar). Add a trace for that action.

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