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Date:   Thu, 22 Jul 2021 18:31:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Daniel Rosenberg <drosen@...gle.com>,
        Eric Biggers <ebiggers@...gle.com>,
        Chao Yu <yuchao0@...wei.com>, Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 5.13 107/156] f2fs: Show casefolding support only when supported

From: Daniel Rosenberg <drosen@...gle.com>

commit 39307f8ee3539478c28e71b4909b5b028cce14b1 upstream.

The casefolding feature is only supported when CONFIG_UNICODE is set.
This modifies the feature list f2fs presents under sysfs accordingly.

Fixes: 5aba54302a46 ("f2fs: include charset encoding information in the superblock")
Cc: stable@...r.kernel.org # v5.4+
Signed-off-by: Daniel Rosenberg <drosen@...gle.com>
Reviewed-by: Eric Biggers <ebiggers@...gle.com>
Reviewed-by: Chao Yu <yuchao0@...wei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/f2fs/sysfs.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -708,7 +708,9 @@ F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LO
 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
 #endif
 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
+#ifdef CONFIG_UNICODE
 F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
+#endif
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 F2FS_FEATURE_RO_ATTR(compression, FEAT_COMPRESSION);
 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block);
@@ -810,7 +812,9 @@ static struct attribute *f2fs_feat_attrs
 	ATTR_LIST(verity),
 #endif
 	ATTR_LIST(sb_checksum),
+#ifdef CONFIG_UNICODE
 	ATTR_LIST(casefold),
+#endif
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 	ATTR_LIST(compression),
 #endif


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