diff options
Diffstat (limited to 'fs/erofs/erofs_fs.h')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index a03ec70ba6f2..6c0c270c42e1 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -296,6 +296,7 @@ enum { Z_EROFS_COMPRESSION_LZ4 = 0, Z_EROFS_COMPRESSION_LZMA = 1, Z_EROFS_COMPRESSION_DEFLATE = 2, + Z_EROFS_COMPRESSION_ZSTD = 3, Z_EROFS_COMPRESSION_MAX }; #define Z_EROFS_ALL_COMPR_ALGS ((1 << Z_EROFS_COMPRESSION_MAX) - 1) @@ -322,6 +323,15 @@ struct z_erofs_deflate_cfgs { u8 reserved[5]; } __packed; +/* 6 bytes (+ length field = 8 bytes) */ +struct z_erofs_zstd_cfgs { + u8 format; + u8 windowlog; /* windowLog - ZSTD_WINDOWLOG_ABSOLUTEMIN(10) */ + u8 reserved[4]; +} __packed; + +#define Z_EROFS_ZSTD_MAX_DICT_SIZE Z_EROFS_PCLUSTER_MAX_SIZE + /* * bit 0 : COMPACTED_2B indexes (0 - off; 1 - on) * e.g. for 4k logical cluster size, 4B if compacted 2B is off; @@ -396,8 +406,7 @@ enum { Z_EROFS_LCLUSTER_TYPE_MAX }; -#define Z_EROFS_LI_LCLUSTER_TYPE_BITS 2 -#define Z_EROFS_LI_LCLUSTER_TYPE_BIT 0 +#define Z_EROFS_LI_LCLUSTER_TYPE_MASK (Z_EROFS_LCLUSTER_TYPE_MAX - 1) /* (noncompact only, HEAD) This pcluster refers to partial decompressed data */ #define Z_EROFS_LI_PARTIAL_REF (1 << 15) @@ -451,8 +460,6 @@ static inline void erofs_check_ondisk_layout_definitions(void) sizeof(struct z_erofs_lcluster_index)); BUILD_BUG_ON(sizeof(struct erofs_deviceslot) != 128); - BUILD_BUG_ON(BIT(Z_EROFS_LI_LCLUSTER_TYPE_BITS) < - Z_EROFS_LCLUSTER_TYPE_MAX - 1); /* exclude old compiler versions like gcc 7.5.0 */ BUILD_BUG_ON(__builtin_constant_p(fmh) ? fmh != cpu_to_le64(1ULL << 63) : 0); |