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Date: Wed, 7 Aug 2013 13:18:26 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Mark Fasheh <mfasheh@suse.de>
Cc: viro@ZenIV.linux.org.uk, linux-fsdevel@vger.kernel.org,
        linux-btrfs@vger.kernel.org, Chris Mason <chris.mason@fusionio.com>,
        Josef Bacik <jbacik@fusionio.com>, Andrew Vagin <avagin@gmail.com>
Subject: Re: [PATCH][RESEND] vfs: allow /proc/PID/maps to get device from stat
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References: <20130807195718.GC31381@wotan.suse.de>
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On Wed, Aug 07, 2013 at 12:57:18PM -0700, Mark Fasheh wrote:
> stat(2) on btrfs returns a custom device, but proc uses s_dev from the super
> block. This causes problems (abi breakage) because software (and users) are
> not expecting the kernel to return different devices from these calls.

So fix stat on btrfs to return the proper device instead.