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SubjectRe: [RFC][PATCH 6/8] mm: handle_speculative_fault()
On Tue, 5 Jan 2010 15:09:47 +0900
Minchan Kim <minchan.kim@gmail.com> wrote:
> My humble opinion is following as.
>
> Couldn't we synchronize rcu in that cases(munmap, exit and so on)?
> It can delay munap and exit but it would be better than handling them by more
> complicated things, I think. And both cases aren't often cases so we
> can achieve advantage than disadvantage?
>

In most case, a program is single threaded. And sychronize_rcu() in unmap path
just adds very big overhead.

Thanks,
-Kame



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