Introduce /sys/fs/f2fs/<devname>/stat/sb_status to show superblock status in real time as a hexadecimal value.
value sb status macro description 0x1 SBI_IS_DIRTY, /* dirty flag for checkpoint */ 0x2 SBI_IS_CLOSE, /* specify unmounting */ 0x4 SBI_NEED_FSCK, /* need fsck.f2fs to fix */ 0x8 SBI_POR_DOING, /* recovery is doing or not */ 0x10 SBI_NEED_SB_WRITE, /* need to recover superblock */ 0x20 SBI_NEED_CP, /* need to checkpoint */ 0x40 SBI_IS_SHUTDOWN, /* shutdown by ioctl */ 0x80 SBI_IS_RECOVERED, /* recovered orphan/data */ 0x100 SBI_CP_DISABLED, /* CP was disabled last mount */ 0x200 SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */ 0x400 SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */ 0x800 SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */ 0x1000 SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */ 0x2000 SBI_IS_RESIZEFS, /* resizefs is in process */ Signed-off-by: Chao Yu <yuch...@huawei.com> --- v3: - just print one single value as output Documentation/ABI/testing/sysfs-fs-f2fs | 21 +++++++++++++++++++++ fs/f2fs/sysfs.c | 8 ++++++++ 2 files changed, 29 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 3dfee94e0618..9b2f93eda1f8 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -377,3 +377,24 @@ Description: This gives a control to limit the bio size in f2fs. Default is zero, which will follow underlying block layer limit, whereas, if it has a certain bytes value, f2fs won't submit a bio larger than that size. + +What: /sys/fs/f2fs/<disk>/stat/sb_status +Date: December 2020 +Contact: "Chao Yu" <yuch...@huawei.com> +Description: Show status of f2fs superblock in real time. + + value sb status macro description + 0x1 SBI_IS_DIRTY, /* dirty flag for checkpoint */ + 0x2 SBI_IS_CLOSE, /* specify unmounting */ + 0x4 SBI_NEED_FSCK, /* need fsck.f2fs to fix */ + 0x8 SBI_POR_DOING, /* recovery is doing or not */ + 0x10 SBI_NEED_SB_WRITE, /* need to recover superblock */ + 0x20 SBI_NEED_CP, /* need to checkpoint */ + 0x40 SBI_IS_SHUTDOWN, /* shutdown by ioctl */ + 0x80 SBI_IS_RECOVERED, /* recovered orphan/data */ + 0x100 SBI_CP_DISABLED, /* CP was disabled last mount */ + 0x200 SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */ + 0x400 SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */ + 0x800 SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */ + 0x1000 SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */ + 0x2000 SBI_IS_RESIZEFS, /* resizefs is in process */ diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index ebca0b4961e8..d5198689ab02 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -101,6 +101,12 @@ static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, sbi->sectors_written_start) >> 1))); } +static ssize_t sb_status_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%lx\n", sbi->s_flag); +} + static ssize_t features_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -711,7 +717,9 @@ static struct attribute *f2fs_feat_attrs[] = { }; ATTRIBUTE_GROUPS(f2fs_feat); +F2FS_GENERAL_RO_ATTR(sb_status); static struct attribute *f2fs_stat_attrs[] = { + ATTR_LIST(sb_status), NULL, }; ATTRIBUTE_GROUPS(f2fs_stat); -- 2.29.2