Re: [PATCH] flush_cache_page while pte valid

[Andrew Morton]

Hugh Dickins wrote:
> 
> On some architectures (cachetlb.txt gives HyperSparc as an example)
> it is essential to flush_cache_page while pte is still valid: the
> rmap VM diverged from the base 2.4 VM before that fix was made,
> so this error has crept back into 2.5.

OK, thanks.

> Patch below applies to 2.5.47 or 2.5.47-mm1 - needs more work over
> shared pagetables, but they've silently fallen out of 2.5.47-mm1:
> oversight?

Yes, oversight.  dcache-rcu was similarly lost.  Pathetic, isn't it?