Hello! This series changes ext4 to properly check extent tree blocks of journal inode. Omitting these (which is a limitation of block validity checks) leads to crash in ext4_cache_extents() in case the extent tree of the journal inode is suitably corrupted. Changes since v1: * Added Reviewed-by tags from Lukas * Fixed two more unrelated minor bugs in block validity testing spotted by Lukas Changes since v2: * Add more Reviewed-by tags from Lukas * Fix intermediate compilation failure in patch 3/6 Honza
