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Date: Tue, 29 Aug 2017 14:31:27 -0700 From: Dan Williams <dan.j.williams@...el.com> To: Christoph Hellwig <hch@....de> Cc: linux-fsdevel <linux-fsdevel@...r.kernel.org>, Jan Kara <jack@...e.cz>, "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>, "Darrick J. Wong" <darrick.wong@...cle.com>, linux-xfs@...r.kernel.org, linux-ext4 <linux-ext4@...r.kernel.org> Subject: Re: [PATCH v2 1/2] fs, xfs: perform dax_device lookup at mount On Tue, Aug 29, 2017 at 2:26 PM, Christoph Hellwig <hch@....de> wrote: > Call me nitpicky, but.. > > First this really should be three patches, one for the DAX code, one > for the VFS code and one for XFS. The DAX and XFS bits looks fine to > me: > > Reviewed-by: Christoph Hellwig <hch@....de> > > But I'm a little worried about stuffing more DAX knowledge into the > block mount_bdev helper. For now it's probably ok as everything > else would involve a lot of refactoring and/or duplication, but > I'm generally not too happy about it. I think this is why we ended up with calling dax_get_by_host() in ->iomap_begin() because the mount_bdev() touches I started with back when this was first introduced were not very palatable. I agree with the direction to move to mount_dax() in the future. I can respin this into three patches and a TODO comment about how we want to kill the dax knowledge in mount_bdev() going forward.
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