xfs: fix reloading the last iunlink item It's not a good idea to be trying to send bug fixes to the mailing list while also trying to take a vacation. Dave sent some review comments about the iunlink reloading patches, I changed them in djwong-dev, and forgot to backport those changes to my -fixes tree. As a result, the patch is missing some important pieces. Perhaps manually copying code diffs between email and two separate git trees is archaic and stupid^W^W^W^Wisn't really a good idea? This has been lightly tested with fstests. Enjoy! Signed-off-by: Darrick J. Wong <djwong@kernel.org>