diff options
Diffstat (limited to 'fs/bcachefs/alloc_background.h')
| -rw-r--r-- | fs/bcachefs/alloc_background.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/bcachefs/alloc_background.h b/fs/bcachefs/alloc_background.h index 8d2b62c9588e..96a0444ea78f 100644 --- a/fs/bcachefs/alloc_background.h +++ b/fs/bcachefs/alloc_background.h @@ -82,6 +82,14 @@ static inline bool bucket_data_type_mismatch(enum bch_data_type bucket, bucket_data_type(bucket) != bucket_data_type(ptr); } +/* + * It is my general preference to use unsigned types for unsigned quantities - + * however, these helpers are used in disk accounting calculations run by + * triggers where the output will be negated and added to an s64. unsigned is + * right out even though all these quantities will fit in 32 bits, since it + * won't be sign extended correctly; u64 will negate "correctly", but s64 is the + * simpler option here. + */ static inline s64 bch2_bucket_sectors_total(struct bch_alloc_v4 a) { return a.stripe_sectors + a.dirty_sectors + a.cached_sectors; @@ -166,8 +174,8 @@ static inline u64 alloc_lru_idx_fragmentation(struct bch_alloc_v4 a, * avoid overflowing LRU_TIME_BITS on a corrupted fs, when * bucket_sectors_dirty is (much) bigger than bucket_size */ - u64 d = min(bch2_bucket_sectors_dirty(a), - ca->mi.bucket_size); + u64 d = min_t(s64, bch2_bucket_sectors_dirty(a), + ca->mi.bucket_size); return div_u64(d * (1ULL << 31), ca->mi.bucket_size); } |