On 2021/6/2 12:15, Daniel Rosenberg wrote:
Older kernels don't support encryption with casefolding. This adds
the sysfs entry encrypted_casefold to show support for those combined
features. Support for this feature was originally added by
commit 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption")
Shouldn't this be backported to the kernel where we support casefolding
with encryption? So adding a fixes tag here?
Thanks,
Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx>
---
fs/f2fs/sysfs.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 09e3f258eb52..3c1095a76710 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -161,6 +161,9 @@ static ssize_t features_show(struct f2fs_attr *a,
if (f2fs_sb_has_compression(sbi))
len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "compression");
+ if (f2fs_sb_has_casefold(sbi) && f2fs_sb_has_encrypt(sbi))
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
+ len ? ", " : "", "encrypted_casefold");
len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "pin_file");
len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
@@ -579,6 +582,7 @@ enum feat_id {
FEAT_CASEFOLD,
FEAT_COMPRESSION,
FEAT_TEST_DUMMY_ENCRYPTION_V2,
+ FEAT_ENCRYPTED_CASEFOLD,
};
static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@@ -600,6 +604,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
case FEAT_CASEFOLD:
case FEAT_COMPRESSION:
case FEAT_TEST_DUMMY_ENCRYPTION_V2:
+ case FEAT_ENCRYPTED_CASEFOLD:
return sprintf(buf, "supported\n");
}
return 0;
@@ -704,6 +709,9 @@ F2FS_GENERAL_RO_ATTR(avg_vblocks);
#ifdef CONFIG_FS_ENCRYPTION
F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2, FEAT_TEST_DUMMY_ENCRYPTION_V2);
+#ifdef CONFIG_UNICODE
+F2FS_FEATURE_RO_ATTR(encrypted_casefold, FEAT_ENCRYPTED_CASEFOLD);
+#endif
#endif
#ifdef CONFIG_BLK_DEV_ZONED
F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
@@ -815,6 +823,9 @@ static struct attribute *f2fs_feat_attrs[] = {
#ifdef CONFIG_FS_ENCRYPTION
ATTR_LIST(encryption),
ATTR_LIST(test_dummy_encryption_v2),
+#ifdef CONFIG_UNICODE
+ ATTR_LIST(encrypted_casefold),
+#endif
#endif
#ifdef CONFIG_BLK_DEV_ZONED
ATTR_LIST(block_zoned),
