xfs: remove isize check from unshare operation
Now that fallocate has an explicit unshare flag again, let's try to remove the inode reflink flag whenever the user unshares any part of a file since checking is cheap compared to the CoW. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reported-by: NBrian Foster <bfoster@redhat.com> Reviewed-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NDave Chinner <david@fromorbit.com>
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