I've applied this patch with some further cleanups. The documentation for the mount options now reads: block_validity(*) These options enable or disable the in-kernel noblock_validity facility for tracking filesystem metadata blocks within internal data structures. This allows multi- block allocator and other routines to notice bugs or corrupted allocation bitmaps which cause blocks to be allocated which overlap with filesystem metadata blocks. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html