Re: [PATCH v5 3/5] dax: use sb_issue_zerout instead of calling dax_clear_sectors

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On Fri, May 06, 2016 at 03:53:09PM -0600, Vishal Verma wrote:
> From: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
> 
> dax_clear_sectors() cannot handle poisoned blocks.  These must be
> zeroed using the BIO interface instead.  Convert ext2 and XFS to use
> only sb_issue_zerout().
> 
> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
> [vishal: Also remove the dax_clear_sectors function entirely]
> Signed-off-by: Vishal Verma <vishal.l.verma@xxxxxxxxx>

Just to make sure:  the existing sb_issue_zerout as in 4.6-rc
is already doing the right thing for DAX?  I've got a pending patchset
for XFS that introduces another dax_clear_sectors users, but if it's
already safe to use blkdev_issue_zeroout I can switch to that and avoid
the merge conflict.
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