From: Dean Gaudet <dgaudet-list-linux-kernel@arctic.org>
To: "Eric W. Biederman" <ebiederm+eric@npwt.net>
Cc: Richard Gooch <Richard.Gooch@atnf.CSIRO.AU>,
linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
Subject: Re: Thread implementations...
Date: Wed, 24 Jun 1998 21:12:59 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.3.96dg4.980624210745.18727h-100000@twinlark.arctic.org> (raw)
In-Reply-To: <m1u35a4fz8.fsf@flinx.npwt.net>
On 24 Jun 1998, Eric W. Biederman wrote:
> >>>>> "RG" == Richard Gooch <Richard.Gooch@atnf.CSIRO.AU> writes:
>
> RG> If we get madvise(2) right, we don't need sendfile(2), correct?
>
> It looks like it from here. As far as madvise goes, I think we need
> to implement madvise(2) as:
... note that mmap() requires a bunch of kernel structures set up to map
things into the program's memory space... when in reality the program
doesn't care at all about the bytes. (And then there's process address
space limitations...) sendfile() and such don't have these problems, and
it may be far more simple to implement sendfile() than it would be to put
all the hints and such into the mm layer to get mmap() performance up to
the same level.
Dean
next prev parent reply other threads:[~1998-06-25 3:50 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <199806240915.TAA09504@vindaloo.atnf.CSIRO.AU>
[not found] ` <Pine.LNX.3.96dg4.980624025515.26983E-100000@twinlark.arctic.org>
[not found] ` <199806241213.WAA10661@vindaloo.atnf.CSIRO.AU>
1998-06-24 22:00 ` Eric W. Biederman
1998-06-24 23:41 ` Richard Gooch
1998-06-25 4:45 ` Eric W. Biederman
1998-06-25 17:14 ` Todd Larason
1998-06-26 7:53 ` Christoph Rohland
1998-06-26 14:16 ` Eric W. Biederman
1998-06-29 10:19 ` Stephen C. Tweedie
1998-06-30 6:19 ` Eric W. Biederman
1998-06-30 13:10 ` Stephen C. Tweedie
1998-06-30 19:35 ` Dean Gaudet
1998-07-01 9:09 ` Stephen C. Tweedie
1998-06-25 4:12 ` Dean Gaudet [this message]
1998-06-25 3:53 ` Richard Gooch
1998-06-25 11:32 ` Stephen C. Tweedie
1998-06-25 21:24 ` Chris Wedgwood
1998-06-25 22:16 ` Richard Gooch
1998-06-25 4:56 ` Eric W. Biederman
1998-06-25 11:35 ` Stephen C. Tweedie
1998-06-25 20:31 ` Dean Gaudet
1998-06-30 6:40 ` Eric W. Biederman
1998-06-30 19:30 Larry McVoy
1998-07-01 8:50 ` Stephen C. Tweedie
1998-07-03 15:21 ` Rik van Riel
1998-07-03 20:05 ` Stephen C. Tweedie
1998-07-03 20:36 ` Rik van Riel
1998-07-04 16:37 ` Stephen C. Tweedie
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