static int __init init_f2fs_fs(void)
{
int err;
f2fs_build_trace_ios();
err = init_inodecache();
if (err)
goto fail;
err = create_node_manager_caches();
if (err)
goto free_inodecache;
err = create_segment_manager_caches();
if (err)
goto free_node_manager_caches;
err = create_checkpoint_caches();
if (err)
goto free_segment_manager_caches;
err = create_extent_cache();
if (err)
goto free_checkpoint_caches;
f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj);
if (!f2fs_kset) {
err = -ENOMEM;
goto free_extent_cache;
}
err = f2fs_init_crypto();
if (err)
goto free_kset;
register_shrinker(&f2fs_shrinker_info);
err = register_filesystem(&f2fs_fs_type);
if (err)
goto free_shrinker;
f2fs_create_root_stats();
f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
return 0;
free_shrinker:
unregister_shrinker(&f2fs_shrinker_info);
f2fs_exit_crypto();
free_kset:
kset_unregister(f2fs_kset);
free_extent_cache:
destroy_extent_cache();
free_checkpoint_caches:
destroy_checkpoint_caches();
free_segment_manager_caches:
destroy_segment_manager_caches();
free_node_manager_caches:
destroy_node_manager_caches();
free_inodecache:
destroy_inodecache();
fail:
return err;
}
static void __exit exit_f2fs_fs(void)
{
remove_proc_entry("fs/f2fs", NULL);
f2fs_destroy_root_stats();
unregister_filesystem(&f2fs_fs_type);
f2fs_exit_crypto();
destroy_extent_cache();
destroy_checkpoint_caches();
destroy_segment_manager_caches();
destroy_node_manager_caches();
destroy_inodecache();
kset_unregister(f2fs_kset);
f2fs_destroy_trace_ios();
}
int __init f2fs_init_crypto(void)
{
int res = -ENOMEM;
f2fs_read_workqueue = alloc_workqueue("f2fs_crypto", WQ_HIGHPRI, 0);
if (!f2fs_read_workqueue)
goto fail;
f2fs_crypto_ctx_cachep = KMEM_CACHE(f2fs_crypto_ctx,
SLAB_RECLAIM_ACCOUNT);
if (!f2fs_crypto_ctx_cachep)
goto fail;
f2fs_crypt_info_cachep = KMEM_CACHE(f2fs_crypt_info,
SLAB_RECLAIM_ACCOUNT);
if (!f2fs_crypt_info_cachep)
goto fail;
return 0;
fail:
f2fs_exit_crypto();
return res;
}