Sam Atkins ab7023dbe5 Kernel: Ensure Ext2FSInode's lookup is populated before using it ...

This fixes #8133.

Ext2FSInode::remove_child() searches the lookup cache, so if it's not
initialized, removing the child fails. If the child was a directory,
this led to it being corrupted and having 0 children.

I also added populate_lookup_cache to add_child. I hadn't seen any
bugs there, but if the cache wasn't populated before, adding that
one entry would make it think it was populated, so that would cause
bugs later.

2021-06-22 11:01:59 +02:00

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