Introduce /sys/fs/f2fs/<devname>/stat/sb_status to show superblock
status in real time.
Signed-off-by: Chao Yu <[email protected]>
---
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" <[email protected]>
+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