From: Christoph Hellwig <hch@infradead.org>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Hellwig <hch@infradead.org>,
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
michaelc@cs.wisc.edu, linux-fsdevel@vger.kernel.org,
ext2-devel@lists.sourceforge.net, open-iscsi@googlegroups.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: allowed pages in the block later, was Re: [PATCH] ext3: avoid sending down non-refcounted pages
Date: Mon, 12 Dec 2005 17:27:02 +0000 [thread overview]
Message-ID: <20051212172702.GB28652@infradead.org> (raw)
In-Reply-To: <84144f020512080558tb9bb6bbjf91e72ad3d9ccaa6@mail.gmail.com>
On Thu, Dec 08, 2005 at 03:58:46PM +0200, Pekka Enberg wrote:
> Hi Christoph,
>
> On 12/8/05, Christoph Hellwig <hch@infradead.org> wrote:
> > One way to work around that would be to detect kmalloced pages and use
> > a slowpath for that. The major issues with that is that we don't have a
> > reliable way to detect if a given struct page comes from the slab allocator
> > or not.
>
> Why doesn't PageSlab work for you?
When I looked last time it was a noop without slab debugging enabled,
but that's not the case in current mainline anymore.
If the VM people agree with that usage we could at least use it to fall
back to slow-path. Even better would be to require normal pages, though.
-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems? Stop! Download the new AJAX search engine that makes
searching your log files as easy as surfing the web. DOWNLOAD SPLUNK!
http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
next prev parent reply other threads:[~2005-12-12 17:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-08 9:09 [PATCH] ext3: avoid sending down non-refcounted pages FUJITA Tomonori
2005-12-08 10:18 ` Andreas Dilger
2005-12-08 12:39 ` [Ext2-devel] " FUJITA Tomonori
2005-12-08 13:42 ` allowed pages in the block later, was " Christoph Hellwig
2005-12-08 13:58 ` Pekka Enberg
2005-12-12 17:27 ` Christoph Hellwig [this message]
2005-12-08 18:18 ` Mike Christie
2005-12-08 18:22 ` Mike Christie
2005-12-08 19:20 ` Pekka Enberg
2005-12-11 0:47 ` Andrew Morton
2005-12-11 8:44 ` allowed pages in the block later, was " Arjan van de Ven
2005-12-12 17:25 ` allowed pages in the block later, was Re: [Ext2-devel] " Christoph Hellwig
2005-12-12 20:12 ` Andrew Morton
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=20051212172702.GB28652@infradead.org \
--to=hch@infradead.org \
--cc=ext2-devel@lists.sourceforge.net \
--cc=fujita.tomonori@lab.ntt.co.jp \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=michaelc@cs.wisc.edu \
--cc=open-iscsi@googlegroups.com \
--cc=penberg@cs.helsinki.fi \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).