From: "J.A. Magallon" <jamagallon@able.es>
To: Robert Love <rml@tech9.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] O_STREAMING - flag for optimal streaming I/O
Date: Tue, 8 Oct 2002 12:42:44 +0200 [thread overview]
Message-ID: <20021008104244.GA1895@werewolf.able.es> (raw)
In-Reply-To: <1034044736.29463.318.camel@phantasy>; from rml@tech9.net on Tue, Oct 08, 2002 at 04:38:55 +0200
Hi,
On 2002.10.08 Robert Love wrote:
>Attached patch implements an O_STREAMING file I/O flag which enables
>manual drop-behind of pages.
>
>If the file has O_STREAMING set then the user has explicitly said "this
>is streaming data, I know I will not revisit this, do not cache
>anything". So we drop pages from the pagecache before our current
>index. We have to fiddle a bit to get writes working since we do
>write-behind but the logic is there and it works.
>
Sorry if this is a newbie question, but, does glibc pass flags blindly
to the syscal ?? Ie, I do not need to rebuild glibc to use this in
open(), fcntl() and so on, just I can make sure that bit 04000000
is set in the flags.
TIA
--
J.A. Magallon <jamagallon@able.es> \ Software is like sex:
werewolf.able.es \ It's better when it's free
Mandrake Linux release 9.0 (dolphin) for i586
Linux 2.4.20-pre9-jam1 (gcc 3.2 (Mandrake Linux 9.0 3.2-1mdk))
next prev parent reply other threads:[~2002-10-08 10:37 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-08 2:38 Robert Love
2002-10-08 10:42 ` J.A. Magallon [this message]
2002-10-08 18:08 ` Robert Love
2002-10-08 18:38 ` Chris Wedgwood
2002-10-08 18:49 ` Robert Love
2002-10-08 19:05 ` Chris Wedgwood
2002-10-08 19:17 ` Robert Love
2002-10-08 19:30 ` Andrew Morton
2002-10-09 14:14 ` Marco Colombo
2002-10-09 16:30 ` kernel
2002-10-08 19:52 ` Chris Wedgwood
2002-10-08 19:59 ` Robert Love
2002-10-08 20:01 ` Chris Wedgwood
2002-10-09 8:33 ` Giuliano Pochini
2002-10-09 8:43 ` Andrew Morton
2002-10-09 10:55 ` Giuliano Pochini
2002-10-09 17:05 ` Mark Mielke
2002-10-09 19:36 ` Giuliano Pochini
2002-10-09 22:24 ` Mark Mielke
2002-10-09 23:20 ` Jamie Lokier
2002-10-10 3:07 ` Mark Mielke
2002-10-10 10:55 ` Helge Hafting
2002-10-10 17:50 ` Mark Mielke
2002-10-10 3:29 ` Erik Andersen
2002-10-10 3:37 ` Robert Love
2002-10-10 13:39 ` Giuliano Pochini
2002-10-10 22:50 ` Mike Fedyk
2002-10-10 22:58 ` Erik Andersen
2002-10-11 8:26 ` Giuliano Pochini
2002-10-11 8:32 ` Helge Hafting
2002-10-10 8:33 ` Giuliano Pochini
2002-10-10 9:10 ` Erik Andersen
2002-10-10 9:38 ` Giuliano Pochini
2002-10-10 10:40 ` Miquel van Smoorenburg
2002-10-10 11:01 ` Helge Hafting
2002-10-10 12:29 ` Xavier Bestel
2002-10-10 13:17 ` Giuliano Pochini
2002-10-10 22:44 ` Mike Fedyk
2002-10-11 8:13 ` Giuliano Pochini
2002-10-10 11:38 ` O_STREAMING has insufficient info - how about fadvise() ? Alan Cox
2002-10-10 11:47 ` William Lee Irwin III
2002-10-10 15:34 ` Andrew Morton
2002-10-10 16:08 ` Alan Cox
2002-10-10 16:49 ` Oliver Xymoron
2002-10-10 15:37 ` [PATCH] O_STREAMING - flag for optimal streaming I/O Gerhard Mack
2002-10-10 22:47 ` Mike Fedyk
2002-10-11 2:14 ` Gerhard Mack
2002-10-11 8:10 ` Chris Wedgwood
2002-10-10 9:14 ` David Lang
2002-10-10 14:51 ` Denis Vlasenko
2002-10-08 19:53 ` Matthias Schniedermeyer
2002-10-08 19:59 ` Chris Wedgwood
2002-10-08 20:03 ` Andrew Morton
2002-10-08 20:34 ` Matthias Schniedermeyer
2002-10-08 20:42 ` Andrew Morton
2002-10-08 20:37 ` Larry McVoy
2002-10-09 11:53 ` Roy Sigurd Karlsbakk
2002-10-09 14:10 ` Marco Colombo
2002-10-09 14:14 ` Robert Love
2002-10-09 14:33 ` Richard B. Johnson
2002-10-09 15:27 ` Andreas Dilger
2002-10-09 23:17 ` Jamie Lokier
2002-10-09 23:46 ` Rik van Riel
2002-10-10 0:16 ` Jamie Lokier
2002-10-10 2:39 ` Erik Andersen
2002-10-10 10:33 ` Marco Colombo
2002-10-10 20:00 ` Erik Andersen
2002-10-11 4:16 Hank Leininger
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