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Diffstat (limited to 'fs/bcachefs/compress.h')
-rw-r--r--fs/bcachefs/compress.h36
1 files changed, 11 insertions, 25 deletions
diff --git a/fs/bcachefs/compress.h b/fs/bcachefs/compress.h
index bec2f05bfd52..667ddb91d47a 100644
--- a/fs/bcachefs/compress.h
+++ b/fs/bcachefs/compress.h
@@ -10,41 +10,27 @@ static const unsigned __bch2_compression_opt_to_type[] = {
#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,
+union bch_compression_opt {
+ u8 value;
+ struct {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 type:4, level:4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 level:4, type:4;
+#endif
};
-}
+};
static inline bool bch2_compression_opt_valid(unsigned v)
{
- struct bch_compression_opt opt = __bch2_compression_decode(v);
+ union bch_compression_opt opt = { .value = 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];
+ return __bch2_compression_opt_to_type[((union bch_compression_opt){ .value = v }).type];
}
struct bch_write_op;