Previously: https://reviews.freebsd.org/P459

# ls mount_native
msdosfs_root(); mp 0xfffffe001a3c9ac0, pmp 0xfffff80003dabc00
deget(pmp 0xfffff80003dabc00, dirclust 0, diroffset 1fffffff, depp 0xfffffe001bbf66f8)
msdosfs_inactive(): dep 0xfffff80003e15d00, de_Name[0] 0
msdosfs_inactive(): v_usecount 0, de_Name[0] 0
msdosfs_reclaim(): dep 0xfffff80003e15d00, file , refcnt 1
msdosfs_root(); mp 0xfffffe001a3c9ac0, pmp 0xfffff80003dabc00
deget(pmp 0xfffff80003dabc00, dirclust 0, diroffset 1fffffff, depp 0xfffffe001bbf6688)
msdosfs_readdir(): vp 0xfffff80003fc75b8, uio 0xfffffe001bbf69d0, cred 0xfffff80003446300, eofflagp 0xfffffe001bbf69cc
exfat_readdir(): fileno 3 type 8 name 'HELLOWORLD.txt'
...
msdosfs_root(); mp 0xfffffe001a3c9ac0, pmp 0xfffff80003dabc00
deget(pmp 0xfffff80003dabc00, dirclust 0, diroffset 1fffffff, depp 0xfffffe001bbf66f8)
msdosfs_lookup(): looking for HELLOWORLD.txt
exfat_lookup_(): vdp 0xfffff80003fc75b8, dp 0xfffff80003e15d00, Attr 10
exfat_lookup_(): match blkoff 160, diroff 96
...
deget(pmp 0xfffff80003dabc00, dirclust 5, diroffset 60, depp 0xfffffe001bbf6418)
msdosfs_inactive(): dep 0xfffff80003e15c00, de_Name[0] 0
msdosfs_inactive(): v_usecount 0, de_Name[0] 0
msdosfs_reclaim(): dep 0xfffff80003e15c00, file , refcnt 1
msdosfs_readdir(): vp 0xfffff80003fc75b8, uio 0xfffffe001bbf69d0, cred 0xfffff80003446300, eofflagp 0xfffffe001bbf69cc
msdosfs_inactive(): dep 0xfffff80003e15d00, de_Name[0] 0
msdosfs_inactive(): v_usecount 0, de_Name[0] 0
msdosfs_reclaim(): dep 0xfffff80003e15d00, file , refcnt 1

HELLOWORLD.txt*