msdosfs_mount
.vfs_mount = msdosfs_mount,
int msdosfs_mount(struct mount *, const char *, void *, struct nameidata *,
int msdosfs_mount(struct mount *, const char *, void *, struct nameidata *, struct proc *);
if ((pmp = msdosfs_mount(&vp, 0)) == NULL)
struct msdosfsmount *msdosfs_mount(struct mkfsvnode *, int);