iomap: remove superflous pagefault_disable from iomap_write_actor
iov_iter_copy_from_user_atomic disables page faults internally, no need to do it around the call. This also brings the iomap code in line with the original filemap version. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NDave Chinner <david@fromorbit.com>
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