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-rw-r--r--fs/bcachefs/util.h40
1 files changed, 39 insertions, 1 deletions
diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
index 1e94f89aabed..3e52c7f8ddd2 100644
--- a/fs/bcachefs/util.h
+++ b/fs/bcachefs/util.h
@@ -622,7 +622,7 @@ do { \
#define per_cpu_sum(_p) \
({ \
- typeof(*_p) _ret = 0; \
+ TYPEOF_UNQUAL(*_p) _ret = 0; \
\
int cpu; \
for_each_possible_cpu(cpu) \
@@ -739,4 +739,42 @@ static inline void memcpy_swab(void *_dst, void *_src, size_t len)
*--dst = *src++;
}
+#define set_flags(_map, _in, _out) \
+do { \
+ unsigned _i; \
+ \
+ for (_i = 0; _i < ARRAY_SIZE(_map); _i++) \
+ if ((_in) & (1 << _i)) \
+ (_out) |= _map[_i]; \
+ else \
+ (_out) &= ~_map[_i]; \
+} while (0)
+
+#define map_flags(_map, _in) \
+({ \
+ unsigned _out = 0; \
+ \
+ set_flags(_map, _in, _out); \
+ _out; \
+})
+
+#define map_flags_rev(_map, _in) \
+({ \
+ unsigned _i, _out = 0; \
+ \
+ for (_i = 0; _i < ARRAY_SIZE(_map); _i++) \
+ if ((_in) & _map[_i]) { \
+ (_out) |= 1 << _i; \
+ (_in) &= ~_map[_i]; \
+ } \
+ (_out); \
+})
+
+#define map_defined(_map) \
+({ \
+ unsigned _in = ~0; \
+ \
+ map_flags_rev(_map, _in); \
+})
+
#endif /* _BCACHEFS_UTIL_H */