| commit | 7c35de4df1056a5a1fb4de042197b8f5b1033b61 | [log] [tgz] |
|---|---|---|
| author | Gao Xiang <hsiangkao@linux.alibaba.com> | Thu May 09 07:44:53 2024 +0800 |
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | Thu May 09 07:46:56 2024 +0800 |
| tree | 44d235d68bdeeb597c516ec547ed8781b369a096 | |
| parent | d69189428d50c9a8de6475f3c8c241f86f4e764a [diff] |
erofs: Zstandard compression support Add Zstandard compression as the 4th supported algorithm since it becomes more popular now and some end users have asked this for quite a while [1][2]. Each EROFS physical cluster contains only one valid standard Zstandard frame as described in [3] so that decompression can be performed on a per-pcluster basis independently. Currently, it just leverages multi-call stream decompression APIs with internal sliding window buffers. One-shot or bufferless decompression could be implemented later for even better performance if needed. [1] https://github.com/erofs/erofs-utils/issues/6 [2] https://lore.kernel.org/r/Y08h+z6CZdnS1XBm@B-P7TQMD6M-0146.lan [3] https://www.rfc-editor.org/rfc/rfc8478.txt Acked-by: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20240508234453.17896-1-xiang@kernel.org