From: Andreas Dilger <adilger@clusterfs.com>
To: Andrew Morton <akpm@digeo.com>
Cc: cat@zip.com.au, linux-kernel@vger.kernel.org
Subject: Re: ext3 weirdness
Date: Fri, 11 Apr 2003 17:03:52 -0600 [thread overview]
Message-ID: <20030411170352.S26054@schatzie.adilger.int> (raw)
In-Reply-To: <20030411154006.7b4d511c.akpm@digeo.com>; from akpm@digeo.com on Fri, Apr 11, 2003 at 03:40:06PM -0700
On Apr 11, 2003 15:40 -0700, Andrew Morton wrote:
> Andreas Dilger <adilger@clusterfs.com> wrote:
> > Because you can't reallocate in-use blocks until the dirty bitmaps have
> > been committed to disk in a transaction.
>
> Also, in 2.5 pdflush will take a ref on the inode while writing it out. So
> an unlink while pdflush is writing back the inode's pages will be magically
> instantaneous, and pdflush actually does the truncate.
It should be possible to have pdflush check for i_nlink == 0 and i_count == 1
periodically, indicating it is the only one that has a reference and then
immediately iput the node (truncating the pages instead of writing them out).
Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/
next prev parent reply other threads:[~2003-04-11 22:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-11 17:06 CaT
2003-04-11 17:39 ` Andreas Dilger
2003-04-11 22:40 ` Andrew Morton
2003-04-11 23:03 ` Andreas Dilger [this message]
2003-04-11 23:26 ` Andrew Morton
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