Christopher Haster 6530cb3a61 Fixed lfs_fs_size doubling metadata-pairs ...

This was caused by the previous fix for allocations during
lfs_fs_deorphan in this branch. To catch half-orphans during block
allocations we needed to duplicate all metadata-pairs reported to
lfs_fs_traverse. Unfortunately this causes lfs_fs_size to report 2x the
number of metadata-pairs, which would undoubtably confuse users.

The fix here is inelegantly simple, just do a different traversale for
allocations and size measurements. It reuses the same code but touches
slightly different sets of blocks.

Unfortunately, this causes the public lfs_fs_traverse and lfs_fs_size
functions to split in how they report blocks. This is technically
allowed, since lfs_fs_traverse may report blocks multiple times due to
CoW behavior, however it's undesirable and I'm sure there will be some
confusion.

But I don't have a better solution, so from this point lfs_fs_traverse
will be reporting 2x metadata-blocks and shouldn't be used for finding
the number of available blocks on the filesystem.

2020-02-09 12:00:23 -06:00

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