From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Hugh Dickins <hugh@veritas.com>
Cc: ncunningham@cyclades.com,
Linux Memory Management <linux-mm@kvack.org>,
Pavel Machek <pavel@suse.cz>,
William Lee Irwin III <wli@holomorphy.com>
Subject: Re: PageReserved removal from swsusp
Date: Tue, 26 Jul 2005 09:29:10 +1000 [thread overview]
Message-ID: <42E575C6.2010802@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.61.0507251332010.13673@goblin.wat.veritas.com>
Hugh Dickins wrote:
> On Mon, 25 Jul 2005, Nick Piggin wrote:
>
>>However I'm not sure that I really like the use of
>>flags == 0xffffffff to indicate the page is unusable. For one thing it
>>may confuse things that walk physical pages, and for another it can
>>easily break if someone clears a flag of an 'unusable' page.
>
>
> I don't like that either. Setting all the flags seems to maximize the
> chance of error somewhere. Perhaps a magic number in one of the other
> struct page fields would work more safely. Or perhaps just leave it
> as its own flag bit for now, and later go on a separate free-up-some-
> flags exercise.
>
OK I'll leave it using PageReserved, and we can rethink it later.
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prev parent reply other threads:[~2005-07-25 23:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-25 1:38 PageReserved removal from swsusp Nick Piggin
2005-07-25 4:31 ` Nigel Cunningham
2005-07-25 4:52 ` Nick Piggin
2005-07-25 6:22 ` Nick Piggin
2005-07-25 6:59 ` Pavel Machek
2005-07-25 12:39 ` Hugh Dickins
2005-07-25 23:29 ` Nick Piggin [this message]
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