From: Jamie Lokier <jamie@shareable.org>
To: Mark Fasheh <mfasheh@suse.com>
Cc: Sunil Mushran <sunil.mushran@oracle.com>,
ocfs2-devel@oss.oracle.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED
Date: Sat, 24 Oct 2009 19:30:39 +0100 [thread overview]
Message-ID: <20091024183039.GB30762@shareable.org> (raw)
In-Reply-To: <20091023180034.GA11402@wotan.suse.de>
Mark Fasheh wrote:
> On Wed, Oct 21, 2009 at 06:05:08PM -0700, Sunil Mushran wrote:
> > Patch adds flag FIEMAP_EXTENT_SHARED to denote extents that are
> > shared with other inodes.
>
> This looks pretty sane to me. Thanks Sunil.
It might be better to have a flag FIEMAP_EXTENT_NOT_SHARED.
Apps which need to know the data is not shared can't safely check
!(flags & FIEMAP_EXTENT_SHARED) because of old kernels which don't set
the flag.
-- Jamie
WARNING: multiple messages have this Message-ID (diff)
From: Jamie Lokier <jamie@shareable.org>
To: Mark Fasheh <mfasheh@suse.com>
Cc: Sunil Mushran <sunil.mushran@oracle.com>,
ocfs2-devel@oss.oracle.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED
Date: Sat, 24 Oct 2009 19:30:39 +0100 [thread overview]
Message-ID: <20091024183039.GB30762@shareable.org> (raw)
In-Reply-To: <20091023180034.GA11402@wotan.suse.de>
Mark Fasheh wrote:
> On Wed, Oct 21, 2009 at 06:05:08PM -0700, Sunil Mushran wrote:
> > Patch adds flag FIEMAP_EXTENT_SHARED to denote extents that are
> > shared with other inodes.
>
> This looks pretty sane to me. Thanks Sunil.
It might be better to have a flag FIEMAP_EXTENT_NOT_SHARED.
Apps which need to know the data is not shared can't safely check
!(flags & FIEMAP_EXTENT_SHARED) because of old kernels which don't set
the flag.
-- Jamie
next prev parent reply other threads:[~2009-10-24 18:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-22 1:05 [Ocfs2-devel] Extend FIEMAP to indicate shared extents Sunil Mushran
2009-10-22 1:05 ` Sunil Mushran
2009-10-22 1:05 ` [Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED Sunil Mushran
2009-10-22 1:05 ` Sunil Mushran
2009-10-23 18:00 ` [Ocfs2-devel] " Mark Fasheh
2009-10-23 18:00 ` Mark Fasheh
2009-10-24 18:30 ` Jamie Lokier [this message]
2009-10-24 18:30 ` Jamie Lokier
2009-10-26 17:29 ` Sunil Mushran
2009-10-26 17:29 ` Sunil Mushran
2009-10-26 17:29 ` [Ocfs2-devel] " Sunil Mushran
2009-10-26 19:29 ` Brad Boyer
2009-10-26 19:29 ` Brad Boyer
2009-10-22 1:05 ` [Ocfs2-devel] [PATCH 2/2] ocfs2: Use FIEMAP_EXTENT_SHARED Sunil Mushran
2009-10-22 1:05 ` Sunil Mushran
-- strict thread matches above, loose matches on Subject: below --
2009-11-06 23:24 [Ocfs2-devel] Extend FIEMAP to indicate shared extents Sunil Mushran
2009-11-06 23:24 ` [Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED Sunil Mushran
2009-12-03 20:46 [Ocfs2-devel] Add FIEMAP_EXTENT_SHARED flag Sunil Mushran
2009-12-03 20:46 ` [Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED Sunil Mushran
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