From: Andrew Morton <akpm@linux-foundation.org>
To: Alex Tomas <alex@clusterfs.com>
Cc: Eric Sandeen <sandeen@redhat.com>,
"Theodore Ts'o" <tytso@mit.edu>,
"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: booked-page-flag.patch
Date: Thu, 15 Feb 2007 12:56:54 -0800 [thread overview]
Message-ID: <20070215125654.b0f18ab3.akpm@linux-foundation.org> (raw)
In-Reply-To: <m3k5yj49bw.fsf@bzzz.home.net>
On Thu, 15 Feb 2007 20:30:43 +0300 Alex Tomas <alex@clusterfs.com> wrote:
> >>>>> Eric Sandeen (ES) writes:
>
> ES> Andrew Morton wrote:
> >> Sorry, we're seriously, seriously, seriously short on flags in the page
> >> struct and this patch is going to need one heck of a good case for it to be
> >> acceptable.
>
> ES> This was for the delayed allocation patchset, right; and by managing
> ES> this at the page level that means we can't do this for block size <
> ES> page size, I think...
>
> I still think that having PG_booked and special code to handle
> case when blocksize==pagesize is worthwhile -- we save 56 bytes
> on 32bit and 104 bytes on 64bit for every written page.
>
If the page doesn't have buffer-heads, set PG_private and clear page->private
If the page does have buffer_heads, use BH_Delay.
next prev parent reply other threads:[~2007-02-15 20:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-15 8:45 booked-page-flag.patch Andrew Morton
2007-02-15 14:03 ` booked-page-flag.patch Alex Tomas
2007-02-15 17:18 ` booked-page-flag.patch Eric Sandeen
2007-02-15 17:30 ` booked-page-flag.patch Alex Tomas
2007-02-15 20:56 ` Andrew Morton [this message]
2007-02-15 21:07 ` booked-page-flag.patch Alex Tomas
2007-02-15 23:23 ` booked-page-flag.patch Andrew Morton
2007-02-16 7:30 ` booked-page-flag.patch Alex Tomas
2007-02-16 7:46 ` booked-page-flag.patch Andrew Morton
2007-02-16 7:56 ` booked-page-flag.patch Alex Tomas
2007-02-16 8:06 ` booked-page-flag.patch Andrew Morton
2007-02-16 12:14 ` booked-page-flag.patch Andreas Dilger
2007-02-16 16:02 ` booked-page-flag.patch Dave Kleikamp
2007-02-16 15:03 ` booked-page-flag.patch Theodore Tso
2007-02-15 20:21 ` booked-page-flag.patch Andrew Morton
2007-02-16 12:17 ` booked-page-flag.patch Andreas Dilger
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=20070215125654.b0f18ab3.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=alex@clusterfs.com \
--cc=linux-ext4@vger.kernel.org \
--cc=sandeen@redhat.com \
--cc=tytso@mit.edu \
/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).