[PATCH v2 4/5] dax: use sb_issue_zerout instead of calling dax_clear_sectors

[Jeff Moyer]

Vishal Verma <vishal.l.verma at intel.com> writes:

> From: Matthew Wilcox <matthew.r.wilcox at intel.com>
>
> 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 at intel.com>
> [vishal: Also remove the dax_clear_sectors function entirely]
> Signed-off-by: Vishal Verma <vishal.l.verma at intel.com>

Reviewed-by: Jeff Moyer <jmoyer at redhat.com>