What: /sys/fs/erofs/features/ Date: November 2021 Contact: "Huang Jianan" <huangjianan@oppo.com> Description: Shows all enabled kernel features. Supported features: zero_padding, compr_cfgs, big_pcluster, chunked_file, device_table, compr_head2, sb_chksum, ztailpacking, dedupe, fragments. What: /sys/fs/erofs/<disk>/sync_decompress Date: November 2021 Contact: "Huang Jianan" <huangjianan@oppo.com> Description: Control strategy of sync decompression: - 0 (default, auto): enable for readpage, and enable for readahead on atomic contexts only. - 1 (force on): enable for readpage and readahead. - 2 (force off): disable for all situations.