diff --git a/fs/crypto/fname.c b/fs/crypto/fname.c
index 9440a44e24ac..09f09def87fc 100644
--- a/fs/crypto/fname.c
+++ b/fs/crypto/fname.c
@@ -300,6 +300,45 @@ void fscrypt_fname_free_buffer(struct fscrypt_str *crypto_str)
 }
 EXPORT_SYMBOL(fscrypt_fname_free_buffer);
 
+void fscrypt_encode_nokey_name(u32 hash, u32 minor_hash,
+			     const struct fscrypt_str *iname,
+			     struct fscrypt_str *oname)
+{
+	struct fscrypt_nokey_name nokey_name;
+	u32 size; /* size of the unencoded no-key name */
+
+	/*
+	 * Sanity check that struct fscrypt_nokey_name doesn't have padding
+	 * between fields and that its encoded size never exceeds NAME_MAX.
+	 */
+	BUILD_BUG_ON(offsetofend(struct fscrypt_nokey_name, dirhash) !=
+		     offsetof(struct fscrypt_nokey_name, bytes));
+	BUILD_BUG_ON(offsetofend(struct fscrypt_nokey_name, bytes) !=
+		     offsetof(struct fscrypt_nokey_name, sha256));
+	BUILD_BUG_ON(BASE64_CHARS(FSCRYPT_NOKEY_NAME_MAX) > NAME_MAX);
+
+	if (hash) {
+		nokey_name.dirhash[0] = hash;
+		nokey_name.dirhash[1] = minor_hash;
+	} else {
+		nokey_name.dirhash[0] = 0;
+		nokey_name.dirhash[1] = 0;
+	}
+	if (iname->len <= sizeof(nokey_name.bytes)) {
+		memcpy(nokey_name.bytes, iname->name, iname->len);
+		size = offsetof(struct fscrypt_nokey_name, bytes[iname->len]);
+	} else {
+		memcpy(nokey_name.bytes, iname->name, sizeof(nokey_name.bytes));
+		/* Compute strong hash of remaining part of name. */
+		fscrypt_do_sha256(&iname->name[sizeof(nokey_name.bytes)],
+				  iname->len - sizeof(nokey_name.bytes),
+				  nokey_name.sha256);
+		size = FSCRYPT_NOKEY_NAME_MAX;
+	}
+	oname->len = base64_encode((const u8 *)&nokey_name, size, oname->name);
+}
+EXPORT_SYMBOL(fscrypt_encode_nokey_name);
+
 /**
  * fscrypt_fname_disk_to_usr() - convert an encrypted filename to
  *				 user-presentable form
@@ -327,8 +366,6 @@ int fscrypt_fname_disk_to_usr(const struct inode *inode,
 			      struct fscrypt_str *oname)
 {
 	const struct qstr qname = FSTR_TO_QSTR(iname);
-	struct fscrypt_nokey_name nokey_name;
-	u32 size; /* size of the unencoded no-key name */
 
 	if (fscrypt_is_dot_dotdot(&qname)) {
 		oname->name[0] = '.';
@@ -343,35 +380,7 @@ int fscrypt_fname_disk_to_usr(const struct inode *inode,
 	if (fscrypt_has_encryption_key(inode))
 		return fname_decrypt(inode, iname, oname);
 
-	/*
-	 * Sanity check that struct fscrypt_nokey_name doesn't have padding
-	 * between fields and that its encoded size never exceeds NAME_MAX.
-	 */
-	BUILD_BUG_ON(offsetofend(struct fscrypt_nokey_name, dirhash) !=
-		     offsetof(struct fscrypt_nokey_name, bytes));
-	BUILD_BUG_ON(offsetofend(struct fscrypt_nokey_name, bytes) !=
-		     offsetof(struct fscrypt_nokey_name, sha256));
-	BUILD_BUG_ON(BASE64_CHARS(FSCRYPT_NOKEY_NAME_MAX) > NAME_MAX);
-
-	if (hash) {
-		nokey_name.dirhash[0] = hash;
-		nokey_name.dirhash[1] = minor_hash;
-	} else {
-		nokey_name.dirhash[0] = 0;
-		nokey_name.dirhash[1] = 0;
-	}
-	if (iname->len <= sizeof(nokey_name.bytes)) {
-		memcpy(nokey_name.bytes, iname->name, iname->len);
-		size = offsetof(struct fscrypt_nokey_name, bytes[iname->len]);
-	} else {
-		memcpy(nokey_name.bytes, iname->name, sizeof(nokey_name.bytes));
-		/* Compute strong hash of remaining part of name. */
-		fscrypt_do_sha256(&iname->name[sizeof(nokey_name.bytes)],
-				  iname->len - sizeof(nokey_name.bytes),
-				  nokey_name.sha256);
-		size = FSCRYPT_NOKEY_NAME_MAX;
-	}
-	oname->len = base64_encode((const u8 *)&nokey_name, size, oname->name);
+	fscrypt_encode_nokey_name(hash, minor_hash, iname, oname);
 	return 0;
 }
 EXPORT_SYMBOL(fscrypt_fname_disk_to_usr);
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index 0ddbd27a2e58..57146f9f70e7 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -202,6 +202,9 @@ static inline void fscrypt_free_filename(struct fscrypt_name *fname)
 int fscrypt_fname_alloc_buffer(u32 max_encrypted_len,
 			       struct fscrypt_str *crypto_str);
 void fscrypt_fname_free_buffer(struct fscrypt_str *crypto_str);
+void fscrypt_encode_nokey_name(u32 hash, u32 minor_hash,
+			     const struct fscrypt_str *iname,
+			     struct fscrypt_str *oname);
 int fscrypt_fname_disk_to_usr(const struct inode *inode,
 			      u32 hash, u32 minor_hash,
 			      const struct fscrypt_str *iname,
