From: Nick Piggin <nickpiggin@yahoo.com.au>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Jens Axboe <jens.axboe@oracle.com>,
Christoph Lameter <clameter@sgi.com>,
Christoph Hellwig <hch@infradead.org>,
David Chinner <dgc@sgi.com>,
linux-kernel@vger.kernel.org, Mel Gorman <mel@skynet.ie>,
William Lee Irwin III <wli@holomorphy.com>,
Badari Pulavarty <pbadari@gmail.com>,
Maxim Levitsky <maximlevitsky@gmail.com>
Subject: Re: [00/17] Large Blocksize Support V3
Date: Fri, 27 Apr 2007 20:26:21 +1000 [thread overview]
Message-ID: <4631CFCD.7020207@yahoo.com.au> (raw)
In-Reply-To: <m1ejm6jwbs.fsf@ebiederm.dsl.xmission.com>
Eric W. Biederman wrote:
> Jens Axboe <jens.axboe@oracle.com> writes:
>>Yes, that is exactly the problem. Once you have that, pktcdvd is pretty
>>much reduced to setup and init code, the actual data handling can be
>>done by sr or ide-cd directly. You could merge it into cdrom.c, it would
>>not be very different from mt-rainier handling (which basically does RMW
>>in firmware, so it works for any write, but performance is of course
>>horrible if you don't do it right).
>
>
> Thanks for the clarification.
>
> So we do have a clear problem that we do not have generic support for
> large sector sizes residing in the page cache.
Well, it is a clear limitation. It hasn't mattered too much until
now, but it is one of the other issues that SGI hit (aside from
io efficiency) because they have 16K filesystems created on ia64
systems that I believe they want to access with x86-64 systems.
I'm slowly looking at patches in the background, but I'm hoping to
be able to spend a decent chunk of time working on them again soon.
It isn't trivial :)
--
SUSE Labs, Novell Inc.
next prev parent reply other threads:[~2007-04-27 10:26 UTC|newest]
Thread overview: 235+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-24 22:21 [00/17] Large Blocksize Support V3 clameter
2007-04-24 22:21 ` [01/17] Remove open coded implementation of memclear_highpage flush clameter
2007-04-24 22:21 ` [02/17] Fix page allocation flags in grow_dev_page() clameter
2007-04-24 22:21 ` [03/17] Fix: find_or_create_page does not spread memory clameter
2007-04-24 22:21 ` [04/17] Free up page->private for compound pages clameter
2007-04-24 22:21 ` [05/17] More compound page features clameter
2007-04-24 22:21 ` [06/17] Fix up handling of Compound head pages clameter
2007-04-24 22:21 ` [07/17] vmstat.c: Support accounting for compound pages clameter
2007-04-24 22:21 ` [08/17] Define functions for page cache handling clameter
2007-04-24 23:00 ` Eric Dumazet
2007-04-25 6:27 ` Christoph Lameter
2007-04-24 22:21 ` [09/17] Convert PAGE_CACHE_xxx -> page_cache_xxx function calls clameter
2007-04-24 22:21 ` [10/17] Variable Order Page Cache: Add clearing and flushing function clameter
2007-04-26 7:02 ` Christoph Lameter
2007-04-26 8:14 ` David Chinner
2007-04-24 22:21 ` [11/17] Readahead support for the variable order page cache clameter
2007-04-24 22:21 ` [12/17] Variable Page Cache Size: Fix up reclaim counters clameter
2007-04-24 22:21 ` [13/17] set_blocksize: Allow to set a larger block size than PAGE_SIZE clameter
2007-04-24 22:21 ` [14/17] Add VM_BUG_ONs to check for correct page order clameter
2007-04-24 22:21 ` [15/17] ramfs: Variable order page cache support clameter
2007-04-24 22:21 ` [16/17] ext2: " clameter
2007-04-24 22:21 ` [17/17] xfs: " clameter
2007-04-25 0:46 ` [00/17] Large Blocksize Support V3 Jörn Engel
2007-04-25 0:47 ` H. Peter Anvin
2007-04-25 3:11 ` William Lee Irwin III
2007-04-25 11:35 ` Jens Axboe
2007-04-25 15:36 ` Christoph Lameter
2007-04-25 17:53 ` Jens Axboe
2007-04-25 18:03 ` Christoph Lameter
2007-04-25 18:05 ` Jens Axboe
2007-04-25 18:14 ` Christoph Lameter
2007-04-25 18:16 ` Jens Axboe
2007-04-25 13:28 ` Mel Gorman
2007-04-25 15:23 ` Christoph Lameter
2007-04-25 22:46 ` Badari Pulavarty
2007-04-26 1:14 ` David Chinner
2007-04-26 1:17 ` David Chinner
2007-04-26 4:51 ` Eric W. Biederman
2007-04-26 5:05 ` Christoph Lameter
2007-04-26 5:44 ` Eric W. Biederman
2007-04-26 6:37 ` Christoph Lameter
2007-04-26 9:16 ` Mel Gorman
2007-04-26 6:38 ` Nick Piggin
2007-04-26 6:46 ` Christoph Lameter
2007-04-26 6:57 ` Nick Piggin
2007-04-26 7:10 ` Christoph Lameter
2007-04-26 7:22 ` Nick Piggin
2007-04-26 7:34 ` Christoph Lameter
2007-04-26 7:48 ` Nick Piggin
2007-04-26 9:20 ` David Chinner
2007-04-26 13:53 ` Avi Kivity
2007-04-26 14:33 ` David Chinner
2007-04-26 14:56 ` Avi Kivity
2007-04-26 15:20 ` Nick Piggin
2007-04-26 17:42 ` Jens Axboe
2007-04-26 18:59 ` Eric W. Biederman
2007-04-26 16:07 ` Christoph Hellwig
2007-04-27 10:05 ` Nick Piggin
2007-04-27 13:06 ` Mel Gorman
2007-04-26 13:50 ` William Lee Irwin III
2007-04-26 18:09 ` Eric W. Biederman
2007-04-26 23:34 ` William Lee Irwin III
2007-04-26 7:48 ` Questions on printk and console_drivers gshan
2007-04-26 10:06 ` [00/17] Large Blocksize Support V3 Mel Gorman
2007-04-26 14:47 ` Nick Piggin
2007-04-26 15:58 ` Christoph Hellwig
2007-04-26 16:05 ` Jens Axboe
2007-04-26 16:16 ` Christoph Hellwig
2007-04-26 13:28 ` Alan Cox
2007-04-26 13:30 ` Jens Axboe
2007-04-29 14:12 ` Matt Mackall
2007-04-28 10:55 ` Pierre Ossman
2007-04-28 15:39 ` Eric W. Biederman
2007-04-26 5:37 ` Nick Piggin
2007-04-26 6:38 ` David Chinner
2007-04-26 6:50 ` Nick Piggin
2007-04-26 8:40 ` Mel Gorman
2007-04-26 8:55 ` Nick Piggin
2007-04-26 10:30 ` Mel Gorman
2007-04-26 10:54 ` Eric W. Biederman
2007-04-26 12:23 ` Mel Gorman
2007-04-26 17:58 ` Christoph Lameter
2007-04-26 18:02 ` Jens Axboe
2007-04-26 16:11 ` Christoph Hellwig
2007-04-26 17:49 ` Eric W. Biederman
2007-04-26 18:03 ` Christoph Lameter
2007-04-26 18:03 ` Jens Axboe
2007-04-26 18:09 ` Christoph Hellwig
2007-04-26 18:12 ` Jens Axboe
2007-04-26 18:24 ` Christoph Hellwig
2007-04-26 18:24 ` Jens Axboe
2007-04-26 18:28 ` Christoph Lameter
2007-04-26 18:29 ` Jens Axboe
2007-04-26 18:35 ` Christoph Lameter
2007-04-26 18:39 ` Jens Axboe
2007-04-26 19:35 ` Eric W. Biederman
2007-04-26 19:42 ` Jens Axboe
2007-04-27 4:05 ` Eric W. Biederman
2007-04-27 10:26 ` Nick Piggin [this message]
2007-04-27 13:51 ` Eric W. Biederman
2007-04-26 20:22 ` Mel Gorman
2007-04-27 0:21 ` William Lee Irwin III
2007-04-27 5:16 ` Jens Axboe
2007-04-27 10:38 ` Nick Piggin
2007-04-26 10:10 ` Eric W. Biederman
2007-04-26 13:50 ` David Chinner
2007-04-26 14:40 ` William Lee Irwin III
2007-04-26 15:38 ` Nick Piggin
2007-04-26 15:58 ` William Lee Irwin III
2007-04-27 9:46 ` Nick Piggin
2007-04-27 0:19 ` Jeremy Higdon
2007-04-26 18:07 ` Christoph Lameter
2007-04-26 18:45 ` Eric W. Biederman
2007-04-26 18:59 ` Christoph Lameter
2007-04-26 19:21 ` Eric W. Biederman
2007-04-26 6:40 ` Christoph Lameter
2007-04-26 6:53 ` Nick Piggin
2007-04-26 7:04 ` David Chinner
2007-04-26 7:07 ` Nick Piggin
2007-04-26 7:11 ` Christoph Lameter
2007-04-26 7:17 ` Nick Piggin
2007-04-26 7:28 ` Christoph Lameter
2007-04-26 7:45 ` Nick Piggin
2007-04-26 18:10 ` Christoph Lameter
2007-04-27 10:08 ` Nick Piggin
2007-04-26 7:07 ` Christoph Lameter
2007-04-26 7:15 ` Nick Piggin
2007-04-26 7:22 ` Christoph Lameter
2007-04-26 7:42 ` Nick Piggin
2007-04-26 10:48 ` Mel Gorman
2007-04-26 12:37 ` Andy Whitcroft
2007-04-26 14:18 ` David Chinner
2007-04-26 15:08 ` Nick Piggin
2007-04-26 15:19 ` William Lee Irwin III
2007-04-26 15:28 ` David Chinner
2007-04-26 14:53 ` William Lee Irwin III
2007-04-26 18:16 ` Christoph Lameter
2007-04-26 18:21 ` Eric W. Biederman
2007-04-27 0:32 ` William Lee Irwin III
2007-04-27 10:22 ` Nick Piggin
2007-04-27 12:58 ` William Lee Irwin III
2007-04-27 13:06 ` Nick Piggin
2007-04-27 14:49 ` William Lee Irwin III
2007-04-26 18:13 ` Christoph Lameter
2007-04-27 10:15 ` Nick Piggin
2007-04-26 14:49 ` William Lee Irwin III
2007-04-26 18:50 ` Maxim Levitsky
2007-04-27 2:04 ` Andrew Morton
2007-04-27 2:27 ` David Chinner
2007-04-27 2:53 ` Andrew Morton
2007-04-27 3:47 ` [00/17] Large Blocksize Support V3 (mmap conceptual discussion) Christoph Lameter
2007-04-27 4:20 ` [00/17] Large Blocksize Support V3 David Chinner
2007-04-27 5:15 ` Andrew Morton
2007-04-27 5:49 ` Christoph Lameter
2007-04-27 6:55 ` Andrew Morton
2007-04-27 7:19 ` Christoph Lameter
2007-04-27 7:26 ` Andrew Morton
2007-04-27 8:37 ` David Chinner
2007-04-27 12:01 ` Christoph Lameter
2007-04-27 16:36 ` David Chinner
2007-04-27 17:34 ` David Chinner
2007-04-27 19:11 ` Andrew Morton
2007-04-28 1:43 ` Nick Piggin
2007-04-28 8:04 ` Peter Zijlstra
2007-04-28 8:22 ` Andrew Morton
2007-04-28 8:32 ` Peter Zijlstra
2007-04-28 8:55 ` Andrew Morton
2007-04-28 9:36 ` Peter Zijlstra
2007-04-28 14:09 ` William Lee Irwin III
2007-04-28 18:26 ` Andrew Morton
2007-04-28 19:19 ` William Lee Irwin III
2007-04-28 21:28 ` Andrew Morton
2007-04-28 3:17 ` David Chinner
2007-04-28 3:49 ` Christoph Lameter
2007-04-28 4:56 ` Andrew Morton
2007-04-28 5:08 ` Christoph Lameter
2007-04-28 5:36 ` Andrew Morton
2007-04-28 6:24 ` Christoph Lameter
2007-04-28 6:52 ` Andrew Morton
2007-04-30 5:30 ` Christoph Lameter
2007-04-28 9:43 ` Alan Cox
2007-04-28 9:58 ` Andrew Morton
2007-04-28 10:21 ` Alan Cox
2007-04-28 10:25 ` Andrew Morton
2007-04-28 11:29 ` Alan Cox
2007-04-28 14:37 ` William Lee Irwin III
2007-04-27 7:22 ` Christoph Lameter
2007-04-27 7:29 ` Andrew Morton
2007-04-27 7:35 ` Christoph Lameter
2007-04-27 7:43 ` Andrew Morton
2007-04-27 11:05 ` Paul Mackerras
2007-04-27 11:41 ` Nick Piggin
2007-04-27 12:12 ` Christoph Lameter
2007-04-27 12:25 ` Nick Piggin
2007-04-27 13:39 ` Christoph Hellwig
2007-04-28 2:27 ` Nick Piggin
2007-04-28 2:39 ` William Lee Irwin III
2007-04-28 2:50 ` Nick Piggin
2007-04-28 3:16 ` William Lee Irwin III
2007-04-28 8:16 ` Christoph Hellwig
2007-04-27 16:48 ` Christoph Lameter
2007-04-27 13:37 ` Christoph Hellwig
2007-04-27 12:14 ` Paul Mackerras
2007-04-27 12:36 ` Nick Piggin
2007-04-27 13:42 ` Christoph Hellwig
2007-04-27 11:58 ` Christoph Lameter
2007-04-27 13:44 ` William Lee Irwin III
2007-04-27 19:15 ` Andrew Morton
2007-04-28 2:21 ` William Lee Irwin III
2007-04-27 6:09 ` David Chinner
2007-04-27 7:04 ` Andrew Morton
2007-04-27 8:03 ` David Chinner
2007-04-27 8:48 ` Andrew Morton
2007-04-27 16:45 ` Theodore Tso
2007-05-04 13:33 ` Eric W. Biederman
2007-05-07 4:29 ` David Chinner
2007-05-07 4:48 ` Eric W. Biederman
2007-05-07 5:27 ` David Chinner
2007-05-07 6:43 ` Eric W. Biederman
2007-05-07 6:49 ` William Lee Irwin III
2007-05-07 7:06 ` William Lee Irwin III
2007-05-08 8:49 ` William Lee Irwin III
2007-05-07 16:06 ` Christoph Lameter
2007-05-07 17:29 ` William Lee Irwin III
2007-05-04 12:57 ` Eric W. Biederman
2007-05-04 13:31 ` Eric W. Biederman
2007-05-04 16:11 ` Christoph Lameter
2007-05-07 4:58 ` David Chinner
2007-05-07 6:56 ` Eric W. Biederman
2007-05-07 15:17 ` Weigert, Daniel
2007-04-27 16:55 ` Theodore Tso
2007-04-27 17:32 ` Nicholas Miell
2007-04-27 18:12 ` William Lee Irwin III
2007-04-28 16:39 ` Maxim Levitsky
2007-04-30 5:23 ` Christoph Lameter
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