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From: Sunil Mushran <sunil.mushran@oracle.com>
To: Jamie Lokier <jamie@shareable.org>
Cc: Mark Fasheh <mfasheh@suse.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: Mon, 26 Oct 2009 10:29:36 -0700	[thread overview]
Message-ID: <4AE5DC80.8010204@oracle.com> (raw)
In-Reply-To: <20091024183039.GB30762@shareable.org>

Jamie Lokier wrote:
> 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.

I'm probably not understanding your point. Won't the older kernels not set
FIEMAP_EXTENT_NOT_SHARED too.

If this is important, we could always add this flag in the stable kernel
trees. Both sharing of extents and fiemap are relatively new to the kernel.


  reply	other threads:[~2009-10-26 17:29 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1256173509-2831-1-git-send-email-sunil.mushran@oracle.com>
     [not found] ` <1256173509-2831-2-git-send-email-sunil.mushran@oracle.com>
2009-10-23 18:00   ` [Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED Mark Fasheh
2009-10-24 18:30     ` Jamie Lokier
2009-10-26 17:29       ` Sunil Mushran [this message]
2009-10-26 19:29         ` Brad Boyer

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