From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
To: Shaohua Li <shaohua.li-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: "linux-btrfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-btrfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Chris Mason <chris.mason-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Arjan van de Ven <arjan-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
"Yan,
Zheng" <zheng.z.yan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
"Wu,
Fengguang" <fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
linux-api <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
manpages <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v3 1/5] add metadata_incore ioctl in vfs
Date: Wed, 19 Jan 2011 21:55:10 -0800 [thread overview]
Message-ID: <20110119215510.0882db92.akpm@linux-foundation.org> (raw)
In-Reply-To: <1295501898.1949.917.camel@sli10-conroe>
On Thu, 20 Jan 2011 13:38:18 +0800 Shaohua Li <shaohua.li-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:
> > ext2, minix and probably others create an address_space for each
> > directory. Heaven knows what xfs does (for example).
> yes, this is for one directiory, but the all files's metadata are in
> block_dev address_space.
> I thought you mean there are several block_dev address_space like
> address_space in some filesystems, which doesn't fit well in my
> implementation. for ext like filesystem, there is only one
> address_space. for filesystems with several address_space, my proposal
> is map them to a virtual big address_space in the new ioctls.
ext2 and minixfs (and I think sysv and ufs) have a separate
address_space for each directory. I don't see how those can be
represented with a single "virtual big address_space" - we also need
identifiers in there so each directory's address_space can be created
and appropriately populated.
next prev parent reply other threads:[~2011-01-20 5:55 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-19 1:15 [PATCH v3 1/5] add metadata_incore ioctl in vfs Shaohua Li
2011-01-19 20:41 ` Andrew Morton
[not found] ` <20110119124158.b0348c44.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-01-20 2:30 ` Shaohua Li
2011-01-20 2:42 ` Andrew Morton
2011-01-20 2:48 ` Shaohua Li
2011-01-20 3:05 ` Andrew Morton
[not found] ` <20110119190548.e1f7f01f.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-01-20 3:21 ` Shaohua Li
2011-01-20 4:10 ` Andrew Morton
2011-01-20 4:41 ` Dave Chinner
2011-01-20 5:44 ` Shaohua Li
2011-01-20 6:06 ` Wu Fengguang
2011-01-24 4:29 ` Dave Chinner
[not found] ` <20110119201014.adf02a78.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-01-20 5:38 ` Shaohua Li
2011-01-20 5:55 ` Andrew Morton [this message]
[not found] ` <20110119215510.0882db92.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-01-20 6:12 ` Shaohua Li
2011-01-20 6:19 ` Wu Fengguang
2011-01-20 6:29 ` Andrew Morton
2011-01-20 6:37 ` Shaohua Li
2011-01-20 6:45 ` Wu Fengguang
2011-01-20 6:27 ` Andrew Morton
[not found] ` <20110119222740.fb1b5229.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-01-24 10:06 ` Boaz Harrosh
2011-01-20 5:46 ` Wu Fengguang
2011-01-20 5:55 ` Wu Fengguang
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