Christopher Haster cf87ba5375 Combined superblock scan and fetch of xored-globals during mount ...

Conceptually these are two separate operations. However, they are both
only needed during mount, both require iteration over the linked-list of
metadata-pairs, and both are independent from each other.

Combining these into one gives us a nice code savings.

Additionally, this greatly simplifies the lookup of the root directory.
Initially we used a flag to indicate which superblock was root, since we
didn't want to fetch more pairs than we needed to. But since we're going
to fetch all metadata-pairs anyways, we can just use the last superblock
we find as the indicator of our root directory.

2018-10-18 10:00:49 -05:00

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