BLK_RQ_UNMAP_USER(9)

NAME
blk_rq_unmap_user - unmap a request with user data

SYNOPSIS

int blk_rq_unmap_user (struct bio * bio, unsigned int ulen);

ARGUMENTS

bio bio to be unmapped

ulen
    length of user buffer

DESCRIPTION

Unmap a bio previously mapped by blk_rq_map_user.