diff options
Diffstat (limited to 'fs/erofs')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 19 | ||||
| -rw-r--r-- | fs/erofs/internal.h | 1 |
2 files changed, 16 insertions, 4 deletions
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 76777673eb63..ecc3a0ea0bc4 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -19,6 +19,7 @@ */ #define EROFS_FEATURE_INCOMPAT_LZ4_0PADDING 0x00000001 #define EROFS_FEATURE_INCOMPAT_COMPR_CFGS 0x00000002 +#define EROFS_FEATURE_INCOMPAT_BIG_PCLUSTER 0x00000002 #define EROFS_ALL_FEATURE_INCOMPAT EROFS_FEATURE_INCOMPAT_LZ4_0PADDING #define EROFS_SB_EXTSLOT_SIZE 16 @@ -214,17 +215,20 @@ enum { /* 14 bytes (+ length field = 16 bytes) */ struct z_erofs_lz4_cfgs { __le16 max_distance; - u8 reserved[12]; + __le16 max_pclusterblks; + u8 reserved[10]; } __packed; /* * bit 0 : COMPACTED_2B indexes (0 - off; 1 - on) * e.g. for 4k logical cluster size, 4B if compacted 2B is off; * (4B) + 2B + (4B) if compacted 2B is on. + * bit 1 : HEAD1 big pcluster (0 - off; 1 - on) + * bit 2 : HEAD2 big pcluster (0 - off; 1 - on) */ -#define Z_EROFS_ADVISE_COMPACTED_2B_BIT 0 - -#define Z_EROFS_ADVISE_COMPACTED_2B (1 << Z_EROFS_ADVISE_COMPACTED_2B_BIT) +#define Z_EROFS_ADVISE_COMPACTED_2B 0x0001 +#define Z_EROFS_ADVISE_BIG_PCLUSTER_1 0x0002 +#define Z_EROFS_ADVISE_BIG_PCLUSTER_2 0x0004 struct z_erofs_map_header { __le32 h_reserved1; @@ -279,6 +283,13 @@ enum { #define Z_EROFS_VLE_DI_CLUSTER_TYPE_BITS 2 #define Z_EROFS_VLE_DI_CLUSTER_TYPE_BIT 0 +/* + * D0_CBLKCNT will be marked _only_ at the 1st non-head lcluster to store the + * compressed block count of a compressed extent (in logical clusters, aka. + * block count of a pcluster). + */ +#define Z_EROFS_VLE_DI_D0_CBLKCNT (1 << 11) + struct z_erofs_vle_decompressed_index { __le16 di_advise; /* where to decompress in the head cluster */ diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 898838e1965e..c130e3848322 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -230,6 +230,7 @@ static inline bool erofs_sb_has_##name(struct erofs_sb_info *sbi) \ EROFS_FEATURE_FUNCS(lz4_0padding, incompat, INCOMPAT_LZ4_0PADDING) EROFS_FEATURE_FUNCS(compr_cfgs, incompat, INCOMPAT_COMPR_CFGS) +EROFS_FEATURE_FUNCS(big_pcluster, incompat, INCOMPAT_BIG_PCLUSTER) EROFS_FEATURE_FUNCS(sb_chksum, compat, COMPAT_SB_CHKSUM) /* atomic flag definitions */ |