This is a note to let you know that I've just added the patch titled f2fs: Show casefolding support only when supported to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: f2fs-show-casefolding-support-only-when-supported.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 39307f8ee3539478c28e71b4909b5b028cce14b1 Mon Sep 17 00:00:00 2001 From: Daniel Rosenberg <drosen@xxxxxxxxxx> Date: Thu, 3 Jun 2021 09:50:37 +0000 Subject: f2fs: Show casefolding support only when supported From: Daniel Rosenberg <drosen@xxxxxxxxxx> 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@xxxxxxxxxxxxxxx # v5.4+ Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx> Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx> Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/f2fs/sysfs.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -499,7 +499,9 @@ 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 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) static struct attribute *f2fs_attrs[] = { @@ -568,7 +570,9 @@ static struct attribute *f2fs_feat_attrs ATTR_LIST(verity), #endif ATTR_LIST(sb_checksum), +#ifdef CONFIG_UNICODE ATTR_LIST(casefold), +#endif NULL, }; ATTRIBUTE_GROUPS(f2fs_feat); Patches currently in stable-queue which might be from drosen@xxxxxxxxxx are queue-5.4/f2fs-show-casefolding-support-only-when-supported.patch