Hi Jeff, On arch/um/, (subarch i386 or x86_64), hostfs build fails with: ../fs/hostfs/hostfs_kern.c:520:36: error: incompatible type for arg ument 2 of 'inode_set_ctime_to_ts' ../include/linux/fs.h:1499:73: note: expected 'struct timespec64' b ut argument is of type 'const struct hostfs_timespec *' -- ~Randy