Re: [PATCH RFCv2] mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault/prealloc memory

[David Hildenbrand]

On 15.03.21 13:22, Kirill A. Shutemov wrote:
> On Mon, Mar 08, 2021 at 05:45:20PM +0100, David Hildenbrand wrote:
> > +			case -EHWPOISON: /* Skip over any poisoned pages. */
> > +				start += PAGE_SIZE;
> > +				continue;
>
> Why is it good approach? It's not abvious to me.

My main motivation was to simplify return code handling. I don't want to 
return -EHWPOISON to user space and I don't want to convert it into 
something misleading like -ENOMEM or -EINVAL. So I decided to handle 
such stuff internally.

What would be you take on that?

--
Thanks,

David / dhildenb