From: Andi Kleen <andi@firstfloor.org>
To: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Andres Freund <andres@anarazel.de>,
Matthew Wilcox <matthew@wil.cx>, Andi Kleen <andi@firstfloor.org>,
viro <viro@zeniv.linux.org.uk>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
robertmhaas <robertmhaas@gmail.com>,
Pg Hackers <pgsql-hackers@postgresql.org>
Subject: Re: [HACKERS] Improve lseek scalability v3
Date: Fri, 16 Sep 2011 19:50:27 +0200 [thread overview]
Message-ID: <20110916175027.GF7761@one.firstfloor.org> (raw)
In-Reply-To: <1316194619-sup-2946@alvh.no-ip.org>
> One other thing we're interested in is portability. I mean, even if
> Linux were to introduce a new hypothetical syscall that was able to
> return the file size at a ridiculously low cost, we probably wouldn't
> use it because it'd be Linux-specific. So an improvement of lseek()
> seems to be the best option.
Fully agreed. It doesn't make any sense at all to implement special
syscalls just to workaround a basic system call not scaling.
-Andi
next prev parent reply other threads:[~2011-09-16 17:50 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-15 23:06 Improve lseek scalability v3 Andi Kleen
2011-09-15 23:06 ` [PATCH 1/7] BTRFS: Fix lseek return value for error Andi Kleen
2011-09-15 23:47 ` Thomas Gleixner
2011-09-16 15:48 ` Christoph Hellwig
2011-09-16 16:38 ` Andi Kleen
2011-09-17 6:10 ` Jeff Liu
2011-09-17 23:03 ` Andreas Dilger
2011-09-18 1:46 ` Andi Kleen
2011-09-18 7:29 ` Jeff Liu
2011-09-18 8:42 ` Marco Stornelli
2011-09-18 10:33 ` Jeff liu
2011-09-18 14:55 ` Chris Mason
2011-09-19 17:52 ` Andi Kleen
2011-09-19 19:30 ` Chris Mason
2011-09-19 19:59 ` Andi Kleen
2011-09-19 22:55 ` Chris Mason
2011-09-15 23:06 ` [PATCH 2/7] VFS: Do (nearly) lockless generic_file_llseek Andi Kleen
2011-09-15 23:06 ` [PATCH 3/7] VFS: Make generic lseek lockless safe Andi Kleen
2011-09-15 23:06 ` [PATCH 4/7] VFS: Add generic_file_llseek_size Andi Kleen
2011-09-16 15:50 ` Christoph Hellwig
2011-09-15 23:06 ` [PATCH 5/7] LSEEK: EXT4: Replace cut'n'pasted llseek code with generic_file_llseek_size Andi Kleen
2011-09-15 23:06 ` [PATCH 6/7] LSEEK: NFS: Drop unnecessary locking in llseek Andi Kleen
2011-09-15 23:06 ` [PATCH 7/7] LSEEK: BTRFS: Avoid i_mutex for SEEK_{CUR,SET,END} Andi Kleen
2011-09-16 13:00 ` Improve lseek scalability v3 Matthew Wilcox
2011-09-16 13:19 ` Josef Bacik
2011-09-16 14:16 ` Andres Freund
2011-09-16 14:23 ` Andi Kleen
2011-09-16 14:41 ` Andres Freund
2011-09-16 15:36 ` Matthew Wilcox
2011-09-16 17:27 ` Andres Freund
2011-09-16 17:39 ` Alvaro Herrera
2011-09-16 17:50 ` Andi Kleen [this message]
2011-09-16 20:08 ` Benjamin LaHaise
2011-09-16 21:02 ` Andres Freund
2011-09-16 21:05 ` [HACKERS] " Andres Freund
2011-09-16 22:44 ` Greg Stark
2011-09-19 12:31 ` Stephen Frost
2011-09-19 13:25 ` [HACKERS] " Matthew Wilcox
2011-09-20 7:18 ` Marco Stornelli
2011-09-19 13:30 ` Robert Haas
2011-09-16 14:26 ` Andres Freund
2011-10-01 20:46 ` Andres Freund
2011-10-01 20:49 ` [PATCH 1/2] LSEEK: BTRFS: Avoid i_mutex for SEEK_{CUR,SET,END} Andres Freund
2011-11-02 8:29 ` Christoph Hellwig
2011-11-05 15:27 ` Chris Mason
2012-03-07 17:16 ` Andres Freund
2011-10-01 20:50 ` [PATCH 2/2] btrfs: Don't have multiple paths to error out in btrfs_file_llseek Andres Freund
2011-10-02 5:28 ` Improve lseek scalability v3 Andi Kleen
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