dax: provide an iomap based fault handler

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Very similar to the existing dax_fault function, but instead of using
the get_block callback we rely on the iomap_ops vector from iomap.c.
That also avoids having to do two calls into the file system for write
faults.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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Christoph Hellwig 2016-09-19 11:24:50 +10:00 • committed by Dave Chinner

parent a254e56812

commit a7d73fe6c5

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include/linux/dax.h

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