Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug

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.