linux-kernel - Re: [PATCH 1/2 V2] ksm: take dirty bit as reference to avoid volatile pages scanning

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Date:	Tue, 21 Jun 2011 17:42:48 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Nai Xia <nai.xia@...il.com>
Cc:	Chris Wright <chrisw@...s-sol.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Izik Eidus <izik.eidus@...ellosystems.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Rik van Riel <riel@...hat.com>,
	linux-mm <linux-mm@...ck.org>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2 V2] ksm: take dirty bit as reference to avoid
 volatile pages scanning

* Nai Xia (nai.xia@...il.com) wrote:
> On Wednesday 22 June 2011 05:42:33 you wrote:
> > * Nai Xia (nai.xia@...il.com) wrote:
> > > This patch makes the page_check_address() can validate if a subpage is
> > > in its place in a huge page pointed by the address. This can be useful when
> > > ksm does not split huge pages when looking up the subpages one by one.
> > 
> > Just a quick heads up...this patch does not compile by itself.  Could you
> > do a little patch cleanup?  Start with just making sure the Subject: is
> > correct for each patch.  Then make sure the 3 are part of same series.
> > And finally, make sure each is stand alone and complilable on its own.
> 
> Oh, indeed, there is a kvm & mmu_notifier related patch not named in a series.
> But with a same email thread ID, I think

Right, in same thread, but it ends up with:

[PATCH 1/2] ksm: take dirty bit as reference to avoid volatile pages...
[PATCH] mmu_notifier, kvm: Introduce dirty bit...
[PATCH 2/2] ksm: take dirty bit as reference to avoid volatile pages...

Not a big deal, but also easy to fix up ;)

> .... I had thought it's ok...
> I'll reformat this patch set to fullfill these requirements. 

thanks,
-chris
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