From: David Chinner <dgc@sgi.com>
To: Nick Piggin <npiggin@suse.de>
Cc: Chris Mason <chris.mason@oracle.com>, David Chinner <dgc@sgi.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
linux-fsdevel@vger.kernel.org
Subject: Re: [RFC] fsblock
Date: Wed, 27 Jun 2007 16:05:31 +1000 [thread overview]
Message-ID: <20070627060531.GV31489@sgi.com> (raw)
In-Reply-To: <20070627053245.GA6033@wotan.suse.de>
On Wed, Jun 27, 2007 at 07:32:45AM +0200, Nick Piggin wrote:
> I think using fsblock to drive the IO and keep the pagecache flags
> uptodate and using a btree in the filesystem to manage extents of block
> allocations wouldn't be a bad idea though. Do any filesystems actually
> do this?
Yes. XFS. But we still need to hold state in buffer heads (BH_delay,
BH_unwritten) that is needed to determine what type of
allocation/extent conversion is necessary during writeback. i.e.
what we originally mapped the page as during the ->prepare_write
call.
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
WARNING: multiple messages have this Message-ID (diff)
From: David Chinner <dgc@sgi.com>
To: Nick Piggin <npiggin@suse.de>
Cc: Chris Mason <chris.mason@oracle.com>, David Chinner <dgc@sgi.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
linux-fsdevel@vger.kernel.org
Subject: Re: [RFC] fsblock
Date: Wed, 27 Jun 2007 16:05:31 +1000 [thread overview]
Message-ID: <20070627060531.GV31489@sgi.com> (raw)
In-Reply-To: <20070627053245.GA6033@wotan.suse.de>
On Wed, Jun 27, 2007 at 07:32:45AM +0200, Nick Piggin wrote:
> I think using fsblock to drive the IO and keep the pagecache flags
> uptodate and using a btree in the filesystem to manage extents of block
> allocations wouldn't be a bad idea though. Do any filesystems actually
> do this?
Yes. XFS. But we still need to hold state in buffer heads (BH_delay,
BH_unwritten) that is needed to determine what type of
allocation/extent conversion is necessary during writeback. i.e.
what we originally mapped the page as during the ->prepare_write
call.
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2007-06-27 6:05 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-24 1:45 [RFC] fsblock Nick Piggin
2007-06-24 1:45 ` Nick Piggin
2007-06-24 1:46 ` [patch 1/3] add the fsblock layer Nick Piggin
2007-06-24 1:46 ` Nick Piggin
2007-06-24 15:28 ` Andi Kleen
2007-06-24 15:28 ` Andi Kleen
2007-06-24 20:18 ` Arjan van de Ven
2007-06-24 20:18 ` Arjan van de Ven
2007-06-25 8:58 ` Andi Kleen
2007-06-25 8:58 ` Andi Kleen
2007-06-25 7:19 ` Nick Piggin
2007-06-25 7:19 ` Nick Piggin
2007-06-24 23:01 ` Neil Brown
2007-06-24 23:01 ` Neil Brown
2007-06-25 7:41 ` Nick Piggin
2007-06-25 7:41 ` Nick Piggin
2007-06-25 12:29 ` Chris Mason
2007-06-25 12:29 ` Chris Mason
2007-06-26 2:34 ` Nick Piggin
2007-06-26 2:34 ` Nick Piggin
2007-06-26 2:48 ` Neil Brown
2007-06-26 2:48 ` Neil Brown
2007-06-26 3:07 ` Nick Piggin
2007-06-26 3:07 ` Nick Piggin
2007-06-26 12:26 ` Chris Mason
2007-06-26 12:26 ` Chris Mason
2007-06-30 10:40 ` Christoph Hellwig
2007-06-30 10:40 ` Christoph Hellwig
2007-06-30 10:40 ` Christoph Hellwig
2007-06-30 10:40 ` Christoph Hellwig
2007-06-25 13:19 ` Chris Mason
2007-06-25 13:19 ` Chris Mason
2007-06-26 2:42 ` Nick Piggin
2007-06-26 2:42 ` Nick Piggin
2007-06-24 1:46 ` [patch 2/3] block_dev: convert to fsblock Nick Piggin
2007-06-24 1:46 ` Nick Piggin
2007-06-24 1:47 ` [patch 3/3] minix: " Nick Piggin
2007-06-24 1:47 ` Nick Piggin
2007-06-24 1:53 ` [RFC] fsblock Nick Piggin
2007-06-24 1:53 ` Nick Piggin
2007-06-24 3:07 ` Jeff Garzik
2007-06-24 3:07 ` Jeff Garzik
2007-06-24 3:47 ` Nick Piggin
2007-06-24 3:47 ` Nick Piggin
2007-06-24 13:51 ` Chris Mason
2007-06-24 13:51 ` Chris Mason
2007-06-25 6:58 ` Nick Piggin
2007-06-25 6:58 ` Nick Piggin
2007-06-25 12:25 ` Chris Mason
2007-06-25 12:25 ` Chris Mason
2007-06-30 10:44 ` Christoph Hellwig
2007-06-30 10:44 ` Christoph Hellwig
2007-06-30 10:42 ` Christoph Hellwig
2007-06-30 10:42 ` Christoph Hellwig
2007-06-30 11:10 ` Jeff Garzik
2007-06-30 11:10 ` Jeff Garzik
2007-06-30 11:13 ` Christoph Hellwig
2007-06-30 11:13 ` Christoph Hellwig
2007-06-24 4:19 ` William Lee Irwin III
2007-06-24 4:19 ` William Lee Irwin III
2007-06-24 14:16 ` Andi Kleen
2007-06-24 14:16 ` Andi Kleen
2007-06-25 7:16 ` Nick Piggin
2007-06-25 7:16 ` Nick Piggin
2007-06-26 3:06 ` David Chinner
2007-06-26 3:06 ` David Chinner
2007-06-26 3:55 ` Nick Piggin
2007-06-26 3:55 ` Nick Piggin
2007-06-26 9:23 ` David Chinner
2007-06-26 9:23 ` David Chinner
2007-06-26 11:14 ` Nick Piggin
2007-06-26 11:14 ` Nick Piggin
2007-06-27 12:39 ` Kyle Moffett
2007-06-27 12:39 ` Kyle Moffett
2007-06-26 12:34 ` Chris Mason
2007-06-26 12:34 ` Chris Mason
2007-06-27 5:32 ` Nick Piggin
2007-06-27 5:32 ` Nick Piggin
2007-06-27 6:05 ` David Chinner [this message]
2007-06-27 6:05 ` David Chinner
2007-06-27 11:50 ` Chris Mason
2007-06-27 11:50 ` Chris Mason
2007-06-27 15:18 ` Anton Altaparmakov
2007-06-27 15:18 ` Anton Altaparmakov
2007-06-27 22:35 ` David Chinner
2007-06-27 22:35 ` David Chinner
2007-06-28 2:44 ` Nick Piggin
2007-06-28 2:44 ` Nick Piggin
2007-06-28 12:20 ` Chris Mason
2007-06-28 12:20 ` Chris Mason
2007-06-29 2:08 ` David Chinner
2007-06-29 2:08 ` David Chinner
2007-06-29 2:33 ` Nick Piggin
2007-06-29 2:33 ` Nick Piggin
2007-06-30 11:05 ` Christoph Hellwig
2007-06-30 11:05 ` Christoph Hellwig
2007-07-09 17:14 ` Christoph Lameter
2007-07-09 17:14 ` Christoph Lameter
2007-07-10 0:54 ` Nick Piggin
2007-07-10 0:54 ` Nick Piggin
2007-07-10 0:59 ` Christoph Lameter
2007-07-10 0:59 ` Christoph Lameter
2007-07-10 1:07 ` Nick Piggin
2007-07-10 1:07 ` Nick Piggin
2007-07-10 1:37 ` Dave McCracken
2007-07-10 1:37 ` Dave McCracken
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070627060531.GV31489@sgi.com \
--to=dgc@sgi.com \
--cc=chris.mason@oracle.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=nickpiggin@yahoo.com.au \
--cc=npiggin@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.