Hans Reiser <[email protected]> wrote:
>
> Umm, no, copy on capture needs to get enabled again as soon as we get
> past issues outsiders care about, and start dealing again with improving
> the code in the ways we think matter. There are real problems that are
> addressed by copy on capture. That it has not been worked on since
> 2.6.5 just sadly indicates how successful folks have been in distracting
> us for so long.
Dinking with rmap internals from within a filesystem is a real problem.
Whatever needs to be done there should be done within core MM if it's done
anywhere so it actually gets maintained by the people who are likely to
break it.
Something like
http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13-rc4/2.6.13-rc4-mm1/broken-out/add-page-becoming-writable-notification.patch
might be what you're after.
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