From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>
Cc: Ingo Molnar <mingo@elte.hu>,
"Frederic Rossi (LMC)" <Frederic.Rossi@ericsson.ca>,
linux-mm@kvack.org
Subject: Re: freemaps
Date: Sun, 15 Dec 2002 17:09:22 -0800 [thread overview]
Message-ID: <20021216010922.GG2690@holomorphy.com> (raw)
In-Reply-To: <3DFD266A.422CB70C@digeo.com>
On Sun, Dec 15, 2002 at 01:03:26AM -0800, Andrew Morton wrote:
>>> - How does it play with non-linear mappings?
William Lee Irwin III wrote:
>> It doesn't care; they're just vma's parked on a virtual address range
>> like the rest of them.
On Sun, Dec 15, 2002 at 05:03:38PM -0800, Andrew Morton wrote:
> But the searching needs are different. If someone has a nonlinear mmap
> of the 0-1M region of a file and then requests an mmap of the 4-5M region,
> that can just be tacked onto the 0-1M mapping's vma (can't it?).
Well, that's more of a merging criterion that a search criterion. At
any rate, while it's true that they can/could be merged arbitrarily
since they're not actually associated with any particular file offset
range, there isn't any indicator I know of now that would actually
allow this distinction wrt. mergeability to be made.
Bill
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prev parent reply other threads:[~2002-12-16 1:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-14 22:47 freemaps Frederic Rossi (LMC)
2002-12-15 3:09 ` freemaps Andrew Morton
2002-12-15 8:41 ` freemaps Ingo Molnar
2002-12-15 9:03 ` freemaps Andrew Morton
2002-12-15 9:36 ` freemaps Ingo Molnar
2002-12-16 0:51 ` freemaps William Lee Irwin III
2002-12-16 1:03 ` freemaps Andrew Morton
2002-12-16 1:09 ` William Lee Irwin III [this message]
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