Re: [PATCH 2/3] HWPOISON: undo memory error handling for dirty pagecache

[Andi Kleen]

Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> writes:

> Current memory error handling on dirty pagecache has a bug that user
> processes who use corrupted pages via read() or write() can't be aware
> of the memory error and result in discarding dirty data silently.
>
> The following patch is to improve handling/reporting memory errors on
> this case, but as a short term solution I suggest that we should undo
> the present error handling code and just leave errors for such cases
> (which expect the 2nd MCE to panic the system) to ensure data consistency.

Not sure that's the right approach. It's not worse than any other IO 
errors isn't it? 

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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