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 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.