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| author |   Chao Yu <chao@kernel.org> | 2025-05-06 15:47:25 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2025-05-06 15:46:52 +0000 |
| commit | 3fea0641b06ff4e53d95d07a96764d8951d4ced6 (patch) | |
| tree | 5f491cb42480f3ede685dd007160a48b93daaa45 /fs/f2fs | |
| parent | f2fs: zone: fix to calculate first_zoned_segno correctly (diff) | |
| download | wireguard-linux-3fea0641b06ff4e53d95d07a96764d8951d4ced6.tar.xz wireguard-linux-3fea0641b06ff4e53d95d07a96764d8951d4ced6.zip | |
f2fs: sysfs: add encoding_flags entry
This patch adds a new sysfs entry /sys/fs/f2fs/<disk>/encoding_flags,
it is a read-only entry to show the value of sb.s_encoding_flags, the
value is hexadecimal.
============================ ==========
Flag_Name Flag_Value
============================ ==========
SB_ENC_STRICT_MODE_FL 0x00000001
SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002
============================ ==========
case#1
mkfs.f2fs -f -O casefold -C utf8:strict /dev/vda
mount /dev/vda /mnt/f2fs
cat /sys/fs/f2fs/vda/encoding_flags
1
case#2
mkfs.f2fs -f -O casefold -C utf8 /dev/vda
fsck.f2fs --nolinear-lookup=1 /dev/vda
mount /dev/vda /mnt/f2fs
cat /sys/fs/f2fs/vda/encoding_flags
2
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/sysfs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 3a3485622691..cf98c5cbb98a 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -274,6 +274,13 @@ static ssize_t encoding_show(struct f2fs_attr *a, return sysfs_emit(buf, "(none)\n"); } +static ssize_t encoding_flags_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sysfs_emit(buf, "%x\n", + le16_to_cpu(F2FS_RAW_SUPER(sbi)->s_encoding_flags)); +} + static ssize_t mounted_time_sec_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -1158,6 +1165,7 @@ F2FS_GENERAL_RO_ATTR(features); F2FS_GENERAL_RO_ATTR(current_reserved_blocks); F2FS_GENERAL_RO_ATTR(unusable); F2FS_GENERAL_RO_ATTR(encoding); +F2FS_GENERAL_RO_ATTR(encoding_flags); F2FS_GENERAL_RO_ATTR(mounted_time_sec); F2FS_GENERAL_RO_ATTR(main_blkaddr); F2FS_GENERAL_RO_ATTR(pending_discard); @@ -1270,6 +1278,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(reserved_blocks), ATTR_LIST(current_reserved_blocks), ATTR_LIST(encoding), + ATTR_LIST(encoding_flags), ATTR_LIST(mounted_time_sec), #ifdef CONFIG_F2FS_STAT_FS ATTR_LIST(cp_foreground_calls), |