[RFC 3/6] ext4: Directly opencode ext4_set_test_dummy_encryption

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Simplify the code by opencoding ext4_set_test_dummy_encryption(), since
there is only one caller of it and ext4_** variant in itself does nothing
special other than calling fscrypt_set_test_dummy_encryption(). This can
be done directly by opencoding it in the caller.

Signed-off-by: Ritesh Harjani <ritesh.list@xxxxxxxxx>
---
 fs/ext4/super.c | 34 ++++++++++++++--------------------
 1 file changed, 14 insertions(+), 20 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 8bb5fa15a013..e7e5c9c057d7 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1863,24 +1863,6 @@ ext4_sb_read_encoding(const struct ext4_super_block *es)
 }
 #endif
 
-static int ext4_set_test_dummy_encryption(struct super_block *sb, char *arg)
-{
-#ifdef CONFIG_FS_ENCRYPTION
-	struct ext4_sb_info *sbi = EXT4_SB(sb);
-	int err;
-
-	err = fscrypt_set_test_dummy_encryption(sb, arg,
-						&sbi->s_dummy_enc_policy);
-	if (err) {
-		ext4_msg(sb, KERN_WARNING,
-			 "Error while setting test dummy encryption [%d]", err);
-		return err;
-	}
-	ext4_msg(sb, KERN_WARNING, "Test dummy encryption mode enabled");
-#endif
-	return 0;
-}
-
 #define EXT4_SPEC_JQUOTA			(1 <<  0)
 #define EXT4_SPEC_JQFMT				(1 <<  1)
 #define EXT4_SPEC_DATAJ				(1 <<  2)
@@ -2795,8 +2777,20 @@ static int ext4_apply_options(struct fs_context *fc, struct super_block *sb)
 
 	ext4_apply_quota_options(fc, sb);
 
-	if (ctx->spec & EXT4_SPEC_DUMMY_ENCRYPTION)
-		ret = ext4_set_test_dummy_encryption(sb, ctx->test_dummy_enc_arg);
+	if (IS_ENABLED(CONFIG_FS_ENCRYPTION) &&
+			(ctx->spec & EXT4_SPEC_DUMMY_ENCRYPTION)) {
+
+		ret = fscrypt_set_test_dummy_encryption(sb,
+						ctx->test_dummy_enc_arg,
+						&sbi->s_dummy_enc_policy);
+		if (ret) {
+			ext4_msg(sb, KERN_WARNING, "Error while setting test dummy encryption [%d]",
+				 ret);
+			return ret;
+		}
+
+		ext4_msg(sb, KERN_WARNING, "Test dummy encryption mode enabled");
+	}
 
 	return ret;
 }
-- 
2.31.1




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