blk_rq_unmap_user
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## Name

blk_rq_unmap_user — unmap a request with user data

## Synopsis

`int blk_rq_unmap_user (` | struct bio * bio`)`;

## Arguments

`bio`

  start of bio list

## Description

Unmap a rq previously mapped by `blk_rq_map_user`. The caller must supply the original rq->bio from the `blk_rq_map_user` return, since the I/O completion may have changed rq->bio.

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