Re: [PATCH][RFC] truncate vs add_to_page_cache race

[Andrew Morton]

Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
>
> I think the entire problem can be fixed by ensuring ->readpage and
> do_generic_mapping read see the same i_size. This would either mean
> passing i_size to or from ->readpage, *or* having ->readpage return
> the number of bytes read, for example.

Or not check i_size in ->readpage at all?

If fixing this is going to cost extra fastpath cycles I'd be inclined to
not bother, frankly.
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