a4ac9d45c0cd ("ovl: fix lseek overflow on 32bit")
9e46b840c705 ("ovl: support stacked SEEK_HOLE/SEEK_DATA")
d1d04ef8572b ("ovl: stack file ops")
8ed5eec9d6c4 ("ovl: encode pure upper file handles")
9678e6303057 ("ovl: fix inconsistent d_ino for legacy merge dir")
b93436320c1e ("ovl: re-structure overlay lower layers in-memory")