vfs_create
rc = vfs_create(&nop_mnt_idmap, lower_dentry, mode, NULL);
EXPORT_SYMBOL(vfs_create);
error = vfs_create(mnt_idmap(path->mnt), path->dentry, mode, NULL);
error = vfs_create(idmap, dentry, mode, &di);
host_err = vfs_create(&nop_mnt_idmap, child, iap->ia_mode, NULL);
host_err = vfs_create(&nop_mnt_idmap, dchild, iap->ia_mode, NULL);
int err = vfs_create(ovl_upper_mnt_idmap(ofs), dentry, mode, NULL);
err = vfs_create(mnt_idmap(path.mnt), dentry, mode, NULL);
int vfs_create(struct mnt_idmap *, struct dentry *, umode_t,