Move leaf-corruption type no extent data case to its dir, and add
verification script in test.sh
The verification script is based on manual btrfs-debug-tree check.
The image can also be reused to other leaf-corruption type, like
corrupted leaf contains regular file extent data case.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
