MLXCX_DMABUF_MEM_ALLOC
if (mxdb->mxdb_flags & MLXCX_DMABUF_MEM_ALLOC) {
mxdb->mxdb_flags &= ~MLXCX_DMABUF_MEM_ALLOC;
(MLXCX_DMABUF_FOREIGN | MLXCX_DMABUF_MEM_ALLOC));
mxdb->mxdb_flags |= MLXCX_DMABUF_MEM_ALLOC;
mxdb->mxdb_flags |= MLXCX_DMABUF_MEM_ALLOC;