Commit 9482f3b0 authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru 



Reported-by: default avatar <syzbot+510b0b28f8e6de64d307@syzkaller.appspotmail.com>
Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 075cabf3

fs/bcachefs/alloc_background.h

+3 −1
Original line number Diff line number Diff line
@@ -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		\