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f2fs: add a sysfs entry to show zone capacity
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>
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@ -580,3 +580,9 @@ Date: January 2022
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Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
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Description: Controls max # of node block writes to be used for roll forward
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recovery. This can limit the roll forward recovery time.
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What: /sys/fs/f2fs/<disk>/unusable_blocks_per_sec
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Date: June 2022
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Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
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Description: Shows the number of unusable blocks in a section which was defined by
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the zone capacity reported by underlying zoned device.
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@ -713,6 +713,11 @@ static struct f2fs_attr f2fs_attr_##_name = { \
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.offset = _offset \
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}
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#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
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F2FS_ATTR_OFFSET(struct_type, name, 0444, \
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f2fs_sbi_show, NULL, \
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offsetof(struct struct_name, elname))
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#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
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F2FS_ATTR_OFFSET(struct_type, name, 0644, \
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f2fs_sbi_show, f2fs_sbi_store, \
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@ -811,6 +816,8 @@ F2FS_FEATURE_RO_ATTR(encrypted_casefold);
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#endif /* CONFIG_FS_ENCRYPTION */
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#ifdef CONFIG_BLK_DEV_ZONED
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F2FS_FEATURE_RO_ATTR(block_zoned);
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F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, unusable_blocks_per_sec,
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unusable_blocks_per_sec);
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#endif
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F2FS_FEATURE_RO_ATTR(atomic_write);
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F2FS_FEATURE_RO_ATTR(extra_attr);
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@ -919,6 +926,9 @@ static struct attribute *f2fs_attrs[] = {
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ATTR_LIST(moved_blocks_background),
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ATTR_LIST(avg_vblocks),
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#endif
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#ifdef CONFIG_BLK_DEV_ZONED
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ATTR_LIST(unusable_blocks_per_sec),
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#endif
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#ifdef CONFIG_F2FS_FS_COMPRESSION
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ATTR_LIST(compr_written_block),
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ATTR_LIST(compr_saved_block),
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