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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))

  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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