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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-08-16 12:41:46 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-08-16 12:46:40 -0400 |
| commit | 9482f3b05332a624508a91c2ab2cf3527328a6a4 (patch) | |
| tree | dc068002690c4ee91ec1646a486d389e7760a566 | |
| parent | 075cabf324c3fd790d6ba39ff9db33a30b954fe2 (diff) | |
bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru
Reported-by: syzbot+510b0b28f8e6de64d307@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/alloc_background.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/bcachefs/alloc_background.h b/fs/bcachefs/alloc_background.h index 260e7fa83d05..fd790b03fbe1 100644 --- a/fs/bcachefs/alloc_background.h +++ b/fs/bcachefs/alloc_background.h @@ -150,7 +150,9 @@ static inline void alloc_data_type_set(struct bch_alloc_v4 *a, enum bch_data_typ static inline u64 alloc_lru_idx_read(struct bch_alloc_v4 a) { - return a.data_type == BCH_DATA_cached ? a.io_time[READ] : 0; + return a.data_type == BCH_DATA_cached + ? a.io_time[READ] & LRU_TIME_MAX + : 0; } #define DATA_TYPES_MOVABLE \ |