+/* 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];
+}
+
+static inline void bch2_prt_compression_type(struct printbuf *out, enum bch_compression_type type)
+{
+ if (type < BCH_COMPRESSION_TYPE_NR)
+ prt_str(out, __bch2_compression_types[type]);
+ else
+ prt_printf(out, "(invalid compression type %u)", 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 *,
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 */