diff options
Diffstat (limited to 'libbcachefs/compress.h')
| -rw-r--r-- | libbcachefs/compress.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/libbcachefs/compress.h b/libbcachefs/compress.h index 4bab1f61..052ea303 100644 --- a/libbcachefs/compress.h +++ b/libbcachefs/compress.h @@ -4,6 +4,35 @@ #include "extents_types.h" +struct bch_compression_opt { + u8 type:4, + level:4; +}; + +static inline struct bch_compression_opt bch2_compression_decode(unsigned v) +{ + return (struct bch_compression_opt) { + .type = v & 15, + .level = v >> 4, + }; +} + +static inline unsigned bch2_compression_encode(struct bch_compression_opt opt) +{ + return opt.type|(opt.level << 4); +} + +static const unsigned __bch2_compression_opt_to_type[] = { +#define x(t, n) [BCH_COMPRESSION_OPT_##t] = BCH_COMPRESSION_TYPE_##t, + BCH_COMPRESSION_OPTS() +#undef x +}; + +static inline enum bch_compression_type bch2_compression_opt_to_type(unsigned v) +{ + return __bch2_compression_opt_to_type[bch2_compression_decode(v).type]; +} + int bch2_bio_uncompress_inplace(struct bch_fs *, struct bio *, struct bch_extent_crc_unpacked *); int bch2_bio_uncompress(struct bch_fs *, struct bio *, struct bio *, @@ -15,4 +44,12 @@ int bch2_check_set_has_compressed_data(struct bch_fs *, unsigned); void bch2_fs_compress_exit(struct bch_fs *); int bch2_fs_compress_init(struct bch_fs *); +int bch2_opt_compression_parse(struct bch_fs *, const char *, u64 *, struct printbuf *); +void bch2_opt_compression_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *, u64); + +#define bch2_opt_compression (struct bch_opt_fn) { \ + .parse = bch2_opt_compression_parse, \ + .to_text = bch2_opt_compression_to_text, \ +} + #endif /* _BCACHEFS_COMPRESS_H */ |