BLK_RQ_UNMAP_USER - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : Block Devices

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NAMEblk_rq_unmap_user − unmap a request with user data

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SYNOPSISint blk_rq_unmap_user(struct bio * bio);

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ARGUMENTSbio start of bio list

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DESCRIPTIONUnmap 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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