From: "David S. Miller" <davem@redhat.com>
To: alan@lxorguk.ukuu.org.uk
Cc: lm@bitmover.com, tom@rhadamanthys.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] TCP Zero Copy for mmapped files
Date: Thu, 02 Jan 2003 18:40:04 -0800 (PST) [thread overview]
Message-ID: <20030102.184004.09755984.davem@redhat.com> (raw)
In-Reply-To: <1041555419.24901.86.camel@irongate.swansea.linux.org.uk>
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: 03 Jan 2003 00:56:59 +0000
On Thu, 2003-01-02 at 23:16, David S. Miller wrote:
> With sendfile() all of this goes straight to the page cache directly
> without a VMA lookup.
With a nasty unpleasant splat the moment you do modification on the
content at all. For static objects sendfile is certainly superior,
Sendfile does not protect against content changes to the
file contents. We don't lock the pages, we merely grab
references to them for the network I/O.
next prev parent reply other threads:[~2003-01-03 2:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-30 1:09 [PATCH] TCP Zero Copy for mmapped files Thomas Ogrisegg
2002-12-30 1:29 ` Larry McVoy
2003-01-02 6:37 ` David S. Miller
2003-01-02 22:12 ` Thomas Ogrisegg
2003-01-02 22:28 ` Larry McVoy
2003-01-02 23:20 ` Alan Cox
2003-01-02 23:16 ` David S. Miller
2003-01-03 0:56 ` Alan Cox
2003-01-03 2:40 ` David S. Miller [this message]
2003-01-03 2:41 ` Linus Torvalds
2003-01-02 23:13 ` David S. Miller
2003-01-03 0:45 ` Thomas Ogrisegg
2003-01-03 1:01 ` Larry McVoy
2003-01-03 1:59 ` Alan Cox
2003-01-06 14:36 ` Gianni Tedesco
2003-01-06 23:29 ` David S. Miller
2003-01-03 1:56 ` Alan Cox
2003-01-03 1:27 ` Larry McVoy
2003-01-03 2:42 ` David S. Miller
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