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Date: Tue, 2 Feb 2016 08:33:56 -0800
Message-ID: <CAPcyv4j8MtNrsW86HepcS3JdO-Gkt+PCcS5GdPi1m3jwCsJ+nQ@mail.gmail.com>
Subject: Re: [PATCH 2/2] dax: fix bdev NULL pointer dereferences
From: Dan Williams <dan.j.williams@intel.com>
To: Jan Kara <jack@suse.cz>
Cc: Dave Chinner <david@fromorbit.com>, Matthew Wilcox <willy@linux.intel.com>,
        Ross Zwisler <ross.zwisler@linux.intel.com>,
        Christoph Hellwig <hch@infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Andrew Morton <akpm@linux-foundation.org>, Jan Kara <jack@suse.com>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        linux-nvdimm <linux-nvdimm@ml01.01.org>
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On Tue, Feb 2, 2016 at 3:17 AM, Jan Kara <jack@suse.cz> wrote:
[..]
> I see, thanks for explanation. So I'm OK with changing what is stored in
> the radix tree to accommodate this use case but my reservation that we IHMO
> have other more pressing things to fix remains...

We don't need pfns in the radix to support XFS RT configurations.
Just call get_blocks() again and use the sector, or am I missing
something?