On 12/09, Chao Yu wrote:
> Introduce /sys/fs/f2fs/<devname>/stat/sb_status to show superblock
> status in real time as below:
>
> IS_DIRTY: no
> IS_CLOSE: no
> IS_SHUTDOWN: no
> IS_RECOVERED: no
> IS_RESIZEFS: no
> NEED_FSCK: no
> POR_DOING: no
> NEED_SB_WRITE: no
> NEED_CP: no
> CP_DISABLED: no
> CP_DISABLED_QUICK: no
> QUOTA_NEED_FLUSH: no
> QUOTA_SKIP_FLUSH: no
> QUOTA_NEED_REPAIR: no
Wait, this is breaking a sysfs rule where one entry should show one value.
>
> Signed-off-by: Chao Yu <yuch...@huawei.com>
> ---
> Documentation/ABI/testing/sysfs-fs-f2fs | 5 ++++
> fs/f2fs/sysfs.c | 36 +++++++++++++++++++++++++
> 2 files changed, 41 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs
> b/Documentation/ABI/testing/sysfs-fs-f2fs
> index 3dfee94e0618..57ab839dc3a2 100644
> --- a/Documentation/ABI/testing/sysfs-fs-f2fs
> +++ b/Documentation/ABI/testing/sysfs-fs-f2fs
> @@ -377,3 +377,8 @@ 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.
> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
> index ebca0b4961e8..1b85e6d16a94 100644
> --- a/fs/f2fs/sysfs.c
> +++ b/fs/f2fs/sysfs.c
> @@ -101,6 +101,40 @@ static ssize_t lifetime_write_kbytes_show(struct
> f2fs_attr *a,
> sbi->sectors_written_start) >> 1)));
> }
>
> +#define SB_STATUS(s) (s ? "yes" : "no")
> +static ssize_t sb_status_show(struct f2fs_attr *a,
> + struct f2fs_sb_info *sbi, char *buf)
> +{
> + return sprintf(buf, "IS_DIRTY: %s\n"
> + "IS_CLOSE: %s\n"
> + "IS_SHUTDOWN: %s\n"
> + "IS_RECOVERED: %s\n"
> + "IS_RESIZEFS: %s\n"
> + "NEED_FSCK: %s\n"
> + "POR_DOING: %s\n"
> + "NEED_SB_WRITE: %s\n"
> + "NEED_CP: %s\n"
> + "CP_DISABLED: %s\n"
> + "CP_DISABLED_QUICK: %s\n"
> + "QUOTA_NEED_FLUSH: %s\n"
> + "QUOTA_SKIP_FLUSH: %s\n"
> + "QUOTA_NEED_REPAIR: %s\n",
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_IS_DIRTY)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_IS_CLOSE)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_IS_RECOVERED)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_IS_RESIZEFS)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_NEED_FSCK)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_POR_DOING)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_NEED_CP)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_CP_DISABLED)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)),
> + SB_STATUS(is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)));
> +}
> +
> static ssize_t features_show(struct f2fs_attr *a,
> struct f2fs_sb_info *sbi, char *buf)
> {
> @@ -711,7 +745,9 @@ 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
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