static int __init ecryptfs_init(void)
{
	int rc;

	if (ECRYPTFS_DEFAULT_EXTENT_SIZE > PAGE_CACHE_SIZE) {
		rc = -EINVAL;
		ecryptfs_printk(KERN_ERR, "The eCryptfs extent size is "
				"larger than the host's page size, and so "
				"eCryptfs cannot run on this system. The "
				"default eCryptfs extent size is [%u] bytes; "
				"the page size is [%lu] bytes.\n",
				ECRYPTFS_DEFAULT_EXTENT_SIZE,
				(unsigned long)PAGE_CACHE_SIZE);
		goto out;
	}
	rc = ecryptfs_init_kmem_caches();
	if (rc) {
		printk(KERN_ERR
		       "Failed to allocate one or more kmem_cache objects\n");
		goto out;
	}
	rc = register_filesystem(&ecryptfs_fs_type);
	if (rc) {
		printk(KERN_ERR "Failed to register filesystem\n");
		goto out_free_kmem_caches;
	}
	rc = do_sysfs_registration();
	if (rc) {
		printk(KERN_ERR "sysfs registration failed\n");
		goto out_unregister_filesystem;
	}
	rc = ecryptfs_init_kthread();
	if (rc) {
		printk(KERN_ERR "%s: kthread initialization failed; "
		       "rc = [%d]\n", __func__, rc);
		goto out_do_sysfs_unregistration;
	}
	rc = ecryptfs_init_messaging();
	if (rc) {
		printk(KERN_ERR "Failure occurred while attempting to "
				"initialize the communications channel to "
				"ecryptfsd\n");
		goto out_destroy_kthread;
	}
	rc = ecryptfs_init_crypto();
	if (rc) {
		printk(KERN_ERR "Failure whilst attempting to init crypto; "
		       "rc = [%d]\n", rc);
		goto out_release_messaging;
	}
	if (ecryptfs_verbosity > 0)
		printk(KERN_CRIT "eCryptfs verbosity set to %d. Secret values "
			"will be written to the syslog!\n", ecryptfs_verbosity);

	goto out;
out_release_messaging:
	ecryptfs_release_messaging();
out_destroy_kthread:
	ecryptfs_destroy_kthread();
out_do_sysfs_unregistration:
	do_sysfs_unregistration();
out_unregister_filesystem:
	unregister_filesystem(&ecryptfs_fs_type);
out_free_kmem_caches:
	ecryptfs_free_kmem_caches();
out:
	return rc;
}
static int __init ecryptfs_init(void)
{
	int rc;

	if (ECRYPTFS_DEFAULT_EXTENT_SIZE > PAGE_CACHE_SIZE) {
		rc = -EINVAL;
		ecryptfs_printk(KERN_ERR, "The eCryptfs extent size is "
				"larger than the host's page size, and so "
				"eCryptfs cannot run on this system. The "
				"default eCryptfs extent size is [%u] bytes; "
				"the page size is [%lu] bytes.\n",
				ECRYPTFS_DEFAULT_EXTENT_SIZE,
				(unsigned long)PAGE_CACHE_SIZE);
		goto out;
	}
	rc = ecryptfs_init_kmem_caches();
	if (rc) {
		printk(KERN_ERR
		       "Failed to allocate one or more kmem_cache objects\n");
		goto out;
	}
	rc = register_filesystem(&ecryptfs_fs_type);
	if (rc) {
		printk(KERN_ERR "Failed to register filesystem\n");
		goto out_free_kmem_caches;
	}
	rc = do_sysfs_registration();
	if (rc) {
		printk(KERN_ERR "sysfs registration failed\n");
		goto out_unregister_filesystem;
	}
	rc = ecryptfs_init_kthread();
	if (rc) {
		printk(KERN_ERR "%s: kthread initialization failed; "
		       "rc = [%d]\n", __func__, rc);
		goto out_do_sysfs_unregistration;
	}
	rc = ecryptfs_init_messaging();
	if (rc) {
		printk(KERN_ERR "Failure occurred while attempting to "
				"initialize the communications channel to "
				"ecryptfsd\n");
		goto out_destroy_kthread;
	}
	rc = ecryptfs_init_crypto();
	if (rc) {
		printk(KERN_ERR "Failure whilst attempting to init crypto; "
		       "rc = [%d]\n", rc);
		goto out_release_messaging;
	}
	if (ecryptfs_verbosity > 0)
		printk(KERN_CRIT "eCryptfs verbosity set to %d. Secret values "
			"will be written to the syslog!\n", ecryptfs_verbosity);

	goto out;
out_release_messaging:
	ecryptfs_release_messaging();
out_destroy_kthread:
	ecryptfs_destroy_kthread();
out_do_sysfs_unregistration:
	do_sysfs_unregistration();
out_unregister_filesystem:
	unregister_filesystem(&ecryptfs_fs_type);
out_free_kmem_caches:
	ecryptfs_free_kmem_caches();
out:
	return rc;
}