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f2fs: add a sysfs entry to show zone capacity

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This patch adds a sysfs entry showing the unusable space in a section
made by zone capacity.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2022-06-28 15:49:47 -07:00
parent 074b5ea290
commit 8e0f54a70e
2 changed files with 16 additions and 0 deletions
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6
Documentation/ABI/testing/sysfs-fs-f2fs
View file

@ -580,3 +580,9 @@ Date: January 2022
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
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" <jaegeuk@kernel.org>
Description: Shows the number of unusable blocks in a section which was defined by
the zone capacity reported by underlying zoned device.

10
fs/f2fs/sysfs.c
View file

@ -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),