[PATCH] BTRFS: Mark '__init' for btrfs_init_cachep, btrfs_init_sysfs,btrfs_interface_init

[Qinghuang Feng]

There functions are only called by 'static int __init init_btrfs_fs(void)',
so also mark them as '__init'.

Signed-off-by: Qinghuang Feng <qhfeng.ker...@gmail.com>
---
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index eee060f..7e03ec8 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2045,7 +2045,7 @@ int btrfs_write_inode(struct inode *inode, int wait);
 void btrfs_dirty_inode(struct inode *inode);
 struct inode *btrfs_alloc_inode(struct super_block *sb);
 void btrfs_destroy_inode(struct inode *inode);
-int btrfs_init_cachep(void);
+int __init btrfs_init_cachep(void);
 void btrfs_destroy_cachep(void);
 long btrfs_ioctl_trans_end(struct file *file);
 struct inode *btrfs_ilookup(struct super_block *s, u64 objectid,
@@ -2089,7 +2089,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
                        struct btrfs_root *root, int cache_only);
 
 /* sysfs.c */
-int btrfs_init_sysfs(void);
+int __init btrfs_init_sysfs(void);
 void btrfs_exit_sysfs(void);
 int btrfs_sysfs_add_super(struct btrfs_fs_info *fs);
 int btrfs_sysfs_add_root(struct btrfs_root *root);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8adfe05..7170c4a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4521,7 +4521,7 @@ struct kmem_cache *btrfs_cache_create(const char *name, 
size_t size,
                                 SLAB_MEM_SPREAD | extra_flags), ctor);
 }
 
-int btrfs_init_cachep(void)
+int __init btrfs_init_cachep(void)
 {
        btrfs_inode_cachep = btrfs_cache_create("btrfs_inode_cache",
                                          sizeof(struct btrfs_inode),
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0a14b49..0a3fc0d 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -649,7 +649,7 @@ static struct miscdevice btrfs_misc = {
        .fops           = &btrfs_ctl_fops
 };
 
-static int btrfs_interface_init(void)
+static int __init btrfs_interface_init(void)
 {
        return misc_register(&btrfs_misc);
 }
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index a240b6f..bd73c97 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -254,7 +254,7 @@ void btrfs_sysfs_del_super(struct btrfs_fs_info *fs)
        wait_for_completion(&fs->kobj_unregister);
 }
 
-int btrfs_init_sysfs(void)
+int __init btrfs_init_sysfs(void)
 {
        btrfs_kset = kset_create_and_add("btrfs", NULL, fs_kobj);
        if (!btrfs_kset)

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