From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [GIT PULL] Btrfs pull request
Date: Wed, 9 Nov 2011 02:48:47 -0500
Message-ID: <20111109074847.GA16742@infradead.org>
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To: Chris Mason <chris.mason@oracle.com>,
	Arne Jansen <sensille@gmx.net>,
	Andrea Gelmini <andrea.gelmini@gmail.com>,
	linux-btrfs <linux-btrfs@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
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On Tue, Nov 08, 2011 at 08:07:01PM -0500, Chris Mason wrote:
> Looks like bio_add_page() is failing and we're getting the enomem from
> there.  LVM is only letting us put one page in each bio.

Yes, at the moment all bio based DM targets only allow single page I/O.