30 lines
1.0 KiB
Plaintext
30 lines
1.0 KiB
Plaintext
What: /sys/fs/erofs/features/
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Date: November 2021
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Contact: "Huang Jianan" <huangjianan@oppo.com>
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Description: Shows all enabled kernel features.
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Supported features:
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zero_padding, compr_cfgs, big_pcluster, chunked_file,
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device_table, compr_head2, sb_chksum, ztailpacking,
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dedupe, fragments.
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What: /sys/fs/erofs/<disk>/sync_decompress
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Date: November 2021
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Contact: "Huang Jianan" <huangjianan@oppo.com>
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Description: Control strategy of sync decompression:
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- 0 (default, auto): enable for readpage, and enable for
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readahead on atomic contexts only.
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- 1 (force on): enable for readpage and readahead.
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- 2 (force off): disable for all situations.
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What: /sys/fs/erofs/<disk>/drop_caches
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Date: November 2024
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Contact: "Guo Chunhai" <guochunhai@vivo.com>
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Description: Writing to this will drop compression-related caches,
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currently used to drop in-memory pclusters and cached
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compressed folios:
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- 1 : invalidate cached compressed folios
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- 2 : drop in-memory pclusters
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- 3 : drop in-memory pclusters and cached compressed folios
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