From 85c675d0d09a45a135bddd15d7b385f8758c32fb Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:35:05 +0200 Subject: Adding upstream version 6.7.7. Signed-off-by: Daniel Baumann --- fs/bcachefs/compress.h | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 fs/bcachefs/compress.h (limited to 'fs/bcachefs/compress.h') diff --git a/fs/bcachefs/compress.h b/fs/bcachefs/compress.h new file mode 100644 index 000000000..607fd5e23 --- /dev/null +++ b/fs/bcachefs/compress.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_COMPRESS_H +#define _BCACHEFS_COMPRESS_H + +#include "extents_types.h" + +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 +}; + +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 bool bch2_compression_opt_valid(unsigned v) +{ + struct bch_compression_opt opt = __bch2_compression_decode(v); + + return opt.type < ARRAY_SIZE(__bch2_compression_opt_to_type) && !(!opt.type && opt.level); +} + +static inline struct bch_compression_opt bch2_compression_decode(unsigned v) +{ + return bch2_compression_opt_valid(v) + ? __bch2_compression_decode(v) + : (struct bch_compression_opt) { 0 }; +} + +static inline unsigned bch2_compression_encode(struct bch_compression_opt opt) +{ + return opt.type|(opt.level << 4); +} + +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 *, + struct bvec_iter, struct bch_extent_crc_unpacked); +unsigned bch2_bio_compress(struct bch_fs *, struct bio *, size_t *, + struct bio *, size_t *, unsigned); + +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 *); + +void bch2_compression_opt_to_text(struct printbuf *, u64); + +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); +int bch2_opt_compression_validate(u64, struct printbuf *); + +#define bch2_opt_compression (struct bch_opt_fn) { \ + .parse = bch2_opt_compression_parse, \ + .to_text = bch2_opt_compression_to_text, \ + .validate = bch2_opt_compression_validate, \ +} + +#endif /* _BCACHEFS_COMPRESS_H */ -- cgit v1.2.3