diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-fs-erofs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-erofs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-erofs b/Documentation/ABI/testing/sysfs-fs-erofs new file mode 100644 index 000000000000..bf3b6299c15e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-fs-erofs @@ -0,0 +1,37 @@ +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. + +What: /sys/fs/erofs/<disk>/drop_caches +Date: November 2024 +Contact: "Guo Chunhai" <guochunhai@vivo.com> +Description: Writing to this will drop compression-related caches, + currently used to drop in-memory pclusters and cached + compressed folios: + + - 1 : invalidate cached compressed folios + - 2 : drop in-memory pclusters + - 3 : drop in-memory pclusters and cached compressed folios + +What: /sys/fs/erofs/accel +Date: May 2025 +Contact: "Bo Liu" <liubo03@inspur.com> +Description: Used to set or show hardware accelerators in effect + and multiple accelerators are separated by '\n'. + Supported accelerator(s): qat_deflate. + Disable all accelerators with an empty string (echo > accel). |