> -----Original Message-----
> From: Jason Gunthorpe <jgg@xxxxxxxx>
> Sent: Tuesday, December 08, 2020 10:59 AM
> To: Xiong, Jianxin <jianxin.xiong@xxxxxxxxx>
> Cc: Leon Romanovsky <leon@xxxxxxxxxx>; linux-rdma@xxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Doug Ledford
> <dledford@xxxxxxxxxx>; Sumit Semwal <sumit.semwal@xxxxxxxxxx>; Christian Koenig <christian.koenig@xxxxxxx>; Vetter, Daniel
> <daniel.vetter@xxxxxxxxx>
> Subject: Re: [PATCH v13 1/4] RDMA/umem: Support importing dma-buf as user memory region
>
> On Tue, Dec 08, 2020 at 06:13:20PM +0000, Xiong, Jianxin wrote:
>
> > > > +static inline struct ib_umem *ib_umem_dmabuf_get(struct ib_device *device,
> > > > + unsigned long offset,
> > > > + size_t size, int fd,
> > > > + int access,
> > > > + struct dma_buf_attach_ops *ops) {
> > > > + return ERR_PTR(-EINVAL);
> > >
> > > Probably, It should be EOPNOTSUPP and not EINVAL.
> >
> > EINVAL is used here to be consistent with existing definitions in the same file.
>
> They may be wrong, EOPNOTSUPP is right for this situation
Ok, let me change all of them to EOPNOTSUPP.
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