From: Andrew Morton <akpm@osdl.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-kernel@vger.kernel.org, nickpiggin@yahoo.com.au, pavel@suse.cz
Subject: Re: [PATCH -mm] swsusp: support creating bigger images (rev. 2)
Date: Tue, 9 May 2006 15:27:13 -0700 [thread overview]
Message-ID: <20060509152713.36bb94f0.akpm@osdl.org> (raw)
In-Reply-To: <200605100015.53455.rjw@sisk.pl>
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>
> Now if the mapped pages that are not mapped by the
> current task are considered, it turns out that they would change only if they
> were reclaimed by try_to_free_pages(). Thus if we take them out of reach
> of try_to_free_pages(), for example by (temporarily) moving them out of their
> respective LRU lists after creating the image, we will be able to include them
> in the image without copying.
I'm a bit curious about how this is true. There are all sorts of way in
which there could be activity against these pages - interrupt-time
asynchronous network Tx completion, async interrupt-time direct-io
completion, tasklets, schedule_work(), etc, etc.
So... could we check your homework on this please? How come only page
reclaim can disturb these pages?
next prev parent reply other threads:[~2006-05-09 22:30 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-02 10:00 [PATCH -mm] swsusp: support creating bigger images Rafael J. Wysocki
2006-05-09 7:33 ` Andrew Morton
2006-05-09 10:19 ` Rafael J. Wysocki
2006-05-09 11:22 ` Pavel Machek
2006-05-09 12:18 ` Rafael J. Wysocki
2006-05-09 12:30 ` Hugh Dickins
2006-05-10 3:50 ` Nick Piggin
2006-05-10 22:26 ` Rafael J. Wysocki
2006-05-11 15:01 ` Hugh Dickins
2006-05-11 21:19 ` Rafael J. Wysocki
2006-05-09 22:15 ` [PATCH -mm] swsusp: support creating bigger images (rev. 2) Rafael J. Wysocki
2006-05-09 22:27 ` Andrew Morton [this message]
2006-05-10 22:58 ` Rafael J. Wysocki
2006-05-10 23:38 ` Andrew Morton
2006-05-11 0:11 ` Nigel Cunningham
2006-05-11 13:20 ` Rafael J. Wysocki
2006-05-11 23:45 ` Nigel Cunningham
2006-05-12 0:17 ` Nathan Scott
2006-05-12 10:09 ` Pavel Machek
2006-05-13 22:32 ` Rafael J. Wysocki
2006-05-11 13:15 ` Rafael J. Wysocki
2006-05-11 11:35 ` Pavel Machek
2006-05-11 12:10 ` Rafael J. Wysocki
2006-05-11 23:49 ` Nigel Cunningham
2006-05-12 10:30 ` Pavel Machek
2006-05-13 22:33 ` Rafael J. Wysocki
2006-05-15 9:48 ` Con Kolivas
2006-05-15 19:52 ` Rafael J. Wysocki
2006-05-15 23:50 ` Con Kolivas
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