Messages in this thread | | | Date | Tue, 5 Jan 2010 15:09:32 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [RFC][PATCH 6/8] mm: handle_speculative_fault() |
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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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