From f0ef073e213a3a1a494b6f55a76ce1242600a453 Mon Sep 17 00:00:00 2001 From: Gao Xiang Date: Tue, 14 Jan 2025 21:04:54 +0800 Subject: include/linux/lz4.h: add some missing macros Currently, LZ4_DISTANCE_MAX and LZ4_DECOMPRESS_INPLACE_MARGIN are defined in the erofs subsystem for LZ4 in-place decompression, which is somewhat unsuitable since they should belong to the LZ4 itself and may change with future LZ4 codebase updates. Move them to include/linux/lz4.h to match the upstream LZ4 library [1]. No logic changes. [1] https://github.com/lz4/lz4/blob/v1.10.0/lib/lz4.h#L670 Link: https://lkml.kernel.org/r/20250114130454.1191150-1-hsiangkao@linux.alibaba.com Signed-off-by: Gao Xiang Cc: Yann Collet Cc: Nick Terrell Cc: Chao Yu Cc: Yue Hu Cc; Jeffle Xu Cc: Sandeep Dhavale Signed-off-by: Andrew Morton --- include/linux/lz4.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lz4.h b/include/linux/lz4.h index b16e15b9587a..ad6042a718b5 100644 --- a/include/linux/lz4.h +++ b/include/linux/lz4.h @@ -645,4 +645,10 @@ int LZ4_decompress_safe_usingDict(const char *source, char *dest, int LZ4_decompress_fast_usingDict(const char *source, char *dest, int originalSize, const char *dictStart, int dictSize); +#define LZ4_DECOMPRESS_INPLACE_MARGIN(compressedSize) (((compressedSize) >> 8) + 32) + +#ifndef LZ4_DISTANCE_MAX /* history window size; can be user-defined at compile time */ +#define LZ4_DISTANCE_MAX 65535 /* set to maximum value by default */ +#endif + #endif -- cgit v1.2.3