f2fs: avoid naming confusion of sysfs init

This patch changes the function names of sysfs init to follow ext4.

f2fs_init_sysfs <-> f2fs_register_sysfs
f2fs_exit_sysfs <-> f2fs_unregister_sysfs

Suggested-by: Chao Yu <yuchao0@huawei.com>
Reivewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/f2fs.h

@@ -2820,10 +2820,10 @@ void destroy_extent_cache(void);
 /*
  * sysfs.c
  */
-int __init f2fs_register_sysfs(void);
-void f2fs_unregister_sysfs(void);
-int f2fs_init_sysfs(struct f2fs_sb_info *sbi);
-void f2fs_exit_sysfs(struct f2fs_sb_info *sbi);
+int __init f2fs_init_sysfs(void);
+void f2fs_exit_sysfs(void);
+int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
+void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
 
 /*
  * crypto support

fs/f2fs/super.c

@@ -649,7 +649,7 @@ static void f2fs_put_super(struct super_block *sb)
 
 	kfree(sbi->ckpt);
 
-	f2fs_exit_sysfs(sbi);
+	f2fs_unregister_sysfs(sbi);
 
 	sb->s_fs_info = NULL;
 	if (sbi->s_chksum_driver)
@@ -2145,7 +2145,7 @@ try_onemore:
 		goto free_root_inode;
 	}
 
-	err = f2fs_init_sysfs(sbi);
+	err = f2fs_register_sysfs(sbi);
 	if (err)
 		goto free_root_inode;
 
@@ -2216,7 +2216,7 @@ skip_recovery:
 
 free_sysfs:
 	f2fs_sync_inode_meta(sbi);
-	f2fs_exit_sysfs(sbi);
+	f2fs_unregister_sysfs(sbi);
 free_root_inode:
 	dput(sb->s_root);
 	sb->s_root = NULL;
@@ -2334,7 +2334,7 @@ static int __init init_f2fs_fs(void)
 	err = create_extent_cache();
 	if (err)
 		goto free_checkpoint_caches;
-	err = f2fs_register_sysfs();
+	err = f2fs_init_sysfs();
 	if (err)
 		goto free_extent_cache;
 	err = register_shrinker(&f2fs_shrinker_info);
@@ -2353,7 +2353,7 @@ free_filesystem:
 free_shrinker:
 	unregister_shrinker(&f2fs_shrinker_info);
 free_sysfs:
-	f2fs_unregister_sysfs();
+	f2fs_exit_sysfs();
 free_extent_cache:
 	destroy_extent_cache();
 free_checkpoint_caches:
@@ -2373,7 +2373,7 @@ static void __exit exit_f2fs_fs(void)
 	f2fs_destroy_root_stats();
 	unregister_filesystem(&f2fs_fs_type);
 	unregister_shrinker(&f2fs_shrinker_info);
-	f2fs_unregister_sysfs();
+	f2fs_exit_sysfs();
 	destroy_extent_cache();
 	destroy_checkpoint_caches();
 	destroy_segment_manager_caches();

fs/f2fs/sysfs.c

@@ -304,7 +304,7 @@ static const struct file_operations f2fs_seq_##_name##_fops = {		\
 F2FS_PROC_FILE_DEF(segment_info);
 F2FS_PROC_FILE_DEF(segment_bits);
 
-int __init f2fs_register_sysfs(void)
+int __init f2fs_init_sysfs(void)
 {
 	f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
 
@@ -314,13 +314,13 @@ int __init f2fs_register_sysfs(void)
 	return 0;
 }
 
-void f2fs_unregister_sysfs(void)
+void f2fs_exit_sysfs(void)
 {
 	kset_unregister(f2fs_kset);
 	remove_proc_entry("fs/f2fs", NULL);
 }
 
-int f2fs_init_sysfs(struct f2fs_sb_info *sbi)
+int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
 {
 	struct super_block *sb = sbi->sb;
 	int err;
@@ -351,7 +351,7 @@ err_out:
 	return err;
 }
 
-void f2fs_exit_sysfs(struct f2fs_sb_info *sbi)
+void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
 {
 	kobject_del(&sbi->s_kobj);
 	kobject_put(&sbi->s_kobj);