diff --git a/fs/erofs/decompressor_lzma.c b/fs/erofs/decompressor_lzma.c
index 091fd5adf818f0026f67f70e323fe7b2a7531062..307b37f0b9f57af5b94eeddcfb0718a21e12ff7e 100644
--- a/fs/erofs/decompressor_lzma.c
+++ b/fs/erofs/decompressor_lzma.c
@@ -47,7 +47,7 @@ void z_erofs_lzma_exit(void)
 	}
 }
 
-int z_erofs_lzma_init(void)
+int __init z_erofs_lzma_init(void)
 {
 	unsigned int i;
 
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 3f3561d37d1b2469c70c2fa697a014cca9274dcb..1db018f8c2e89d459155fb8447f73ac558daa7b2 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -486,7 +486,7 @@ static inline void *erofs_vm_map_ram(struct page **pages, unsigned int count)
 void *erofs_get_pcpubuf(unsigned int requiredpages);
 void erofs_put_pcpubuf(void *ptr);
 int erofs_pcpubuf_growsize(unsigned int nrpages);
-void erofs_pcpubuf_init(void);
+void __init erofs_pcpubuf_init(void);
 void erofs_pcpubuf_exit(void);
 
 int erofs_register_sysfs(struct super_block *sb);
@@ -545,7 +545,7 @@ static inline int z_erofs_fill_inode(struct inode *inode) { return -EOPNOTSUPP;
 #endif	/* !CONFIG_EROFS_FS_ZIP */
 
 #ifdef CONFIG_EROFS_FS_ZIP_LZMA
-int z_erofs_lzma_init(void);
+int __init z_erofs_lzma_init(void);
 void z_erofs_lzma_exit(void);
 int z_erofs_load_lzma_config(struct super_block *sb,
 			     struct erofs_super_block *dsb,
diff --git a/fs/erofs/pcpubuf.c b/fs/erofs/pcpubuf.c
index a2efd833d1b6c32791c3ed380d5792361160fd05..c7a4b1d77069d9e7b749a08aec36988e7fa92d3f 100644
--- a/fs/erofs/pcpubuf.c
+++ b/fs/erofs/pcpubuf.c
@@ -114,7 +114,7 @@ int erofs_pcpubuf_growsize(unsigned int nrpages)
 	return ret;
 }
 
-void erofs_pcpubuf_init(void)
+void __init erofs_pcpubuf_init(void)
 {
 	int cpu;