There's another loop protection during scan of directory items. This can
fire under invalid conditions, ie. when there's no real endless loop.
The layout of b-tree items could trigger that and has been observed in
practice. This prevents automated restoration as it requires user
attention.
The number of loops is 1024, unjustified and without explanation. Errors
during traversing the leaves are checked so most errors would be caught.
A real loop in the directory items would require some crafting and would
not happen on a normal filesystem.
Issue: #59
Issue: #164
Issue: #237
Signed-off-by: David Sterba <dsterba@suse.com>
9a83a0b5c0