This patch adds a sysfs entry showing the unusable space in a section
made by zone capacity.
Signed-off-by: Jaegeuk Kim <[email protected]>
---
Documentation/ABI/testing/sysfs-fs-f2fs | 6 ++++++
fs/f2fs/sysfs.c | 10 ++++++++++
2 files changed, 16 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 9b583dd0298b..22c1efd49773 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -580,3 +580,9 @@ Date: January 2022
Contact: "Jaegeuk Kim" <[email protected]>
Description: Controls max # of node block writes to be used for roll forward
recovery. This can limit the roll forward recovery time.
+
+What: /sys/fs/f2fs/<disk>/unusable_blocks_per_sec
+Date: June 2022
+Contact: "Jaegeuk Kim" <[email protected]>
+Description: Shows the number of unusable blocks in a section which was defined by
+ the zone capacity reported by underlying zoned device.
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 4c50aedd5144..6eeefe60a7af 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -713,6 +713,11 @@ static struct f2fs_attr f2fs_attr_##_name = { \
.offset = _offset \
}
+#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
+ F2FS_ATTR_OFFSET(struct_type, name, 0444, \
+ f2fs_sbi_show, NULL, \
+ offsetof(struct struct_name, elname))
+
#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
F2FS_ATTR_OFFSET(struct_type, name, 0644, \
f2fs_sbi_show, f2fs_sbi_store, \
@@ -811,6 +816,8 @@ F2FS_FEATURE_RO_ATTR(encrypted_casefold);
#endif /* CONFIG_FS_ENCRYPTION */
#ifdef CONFIG_BLK_DEV_ZONED
F2FS_FEATURE_RO_ATTR(block_zoned);
+F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, unusable_blocks_per_sec,
+ unusable_blocks_per_sec);
#endif
F2FS_FEATURE_RO_ATTR(atomic_write);
F2FS_FEATURE_RO_ATTR(extra_attr);
@@ -919,6 +926,9 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(moved_blocks_background),
ATTR_LIST(avg_vblocks),
#endif
+#ifdef CONFIG_BLK_DEV_ZONED
+ ATTR_LIST(unusable_blocks_per_sec),
+#endif
#ifdef CONFIG_F2FS_FS_COMPRESSION
ATTR_LIST(compr_written_block),
ATTR_LIST(compr_saved_block),
--
2.37.0.rc0.161.g10f37bed90-goog
On 2022/6/29 7:47, Jaegeuk Kim wrote:
> This patch adds a sysfs entry showing the unusable space in a section
> made by zone capacity.
>
> Signed-off-by: Jaegeuk Kim <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Thanks,