Hello, This is the fourth version of support for orphan file feature in e2fsprogs. The first patch removes feature bit for a feature which never happened and probably isn't living anywhere (if it still lives I can allocate a different bit...). Other two patches are fixes I've spotted while debugging this series. I'm not aware of any outstanding issue with the series, xfstests pass fine with it. Changes since v3: * updated to compute checksum also from physical block Changes since v2: * rebased onto current master branch * fixed various bugs I've spotted during testing * added support for debugfs, dumpe2fs, e2image * changed code to use dynamically allocated inode number instead of fixed one Honza