linux-kernel - Re: [PATCH 5/6] nouveau: return -EBUSY when hmm_range_wait_until

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Date:   Tue, 23 Jul 2019 15:18:49 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Christoph Hellwig <hch@....de>
CC:     Jérôme Glisse <jglisse@...hat.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/6] nouveau: return -EBUSY when
 hmm_range_wait_until_valid fails

On Mon, Jul 22, 2019 at 11:44:25AM +0200, Christoph Hellwig wrote:
> -EAGAIN has a magic meaning for non-blocking faults, so don't overload
> it.  Given that the caller doesn't check for specific error codes this
> change is purely cosmetic.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/gpu/drm/nouveau/nouveau_svm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Agree

Reviewed-by: Jason Gunthorpe <jgg@...lanox.com>

Jason