BLK_RQ_UNMAP_USER(9) Block Devices BLK_RQ_UNMAP_USER(9)NAMEblk_rq_unmap_user - unmap a request with user data
int blk_rq_unmap_user(struct bio * bio);
start of bio list
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.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 BLK_RQ_UNMAP_USER(9)