From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Pavel Emelyanov <xemul@parallels.com>,
Andrew Morton <akpm@linux-foundation.org>,
Matt Mackall <mpm@selenic.com>,
Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Stephen Rothwell <sfr@canb.auug.org.au>
Subject: Re: [PATCH] mm: Save soft-dirty bits on file pages
Date: Sun, 28 Jul 2013 01:01:43 +0400 [thread overview]
Message-ID: <20130727210143.GA2524@moon> (raw)
In-Reply-To: <CALCETrWbF_e98w0d9-0tLOaTUv-mZv_RQgqOpuNiVaDOacHT0g@mail.gmail.com>
On Sat, Jul 27, 2013 at 10:06:01AM -0700, Andy Lutomirski wrote:
>
> That being said, a MAP_PRIVATE, un-cowed mapping must be clean -- if
> it had been (soft-)dirtied, it would also have been cowed. So you
> might be okay.
Yas, as far as I know we are either cow'ed or in clean state, thus
either soft-bit set on #pf (and when reclaimed rest in file-pte)
or it remains clean and there is no change we need to track.
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next prev parent reply other threads:[~2013-07-27 21:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-26 20:18 [PATCH] mm: Save soft-dirty bits on file pages Cyrill Gorcunov
2013-07-26 20:55 ` Andy Lutomirski
2013-07-26 21:18 ` Cyrill Gorcunov
2013-07-26 21:36 ` Andy Lutomirski
2013-07-27 6:25 ` Cyrill Gorcunov
2013-07-27 17:06 ` Andy Lutomirski
2013-07-27 21:01 ` Cyrill Gorcunov [this message]
2013-07-27 19:29 ` Pavel Emelyanov
2013-07-28 9:28 ` Pavel Emelyanov
2013-07-29 14:08 ` Pavel Emelyanov
2013-07-29 14:14 ` Cyrill Gorcunov
2013-07-29 14:24 ` Pavel Emelyanov
2013-07-29 14:36 ` Cyrill Gorcunov
2013-07-29 14:58 ` Aneesh Kumar K.V
2013-07-29 15:02 ` Cyrill Gorcunov
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