X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libbcachefs%2Flru.h;h=429dca816df5c5049c85e31ea20eb1e92ea694cf;hb=b6740e5392a0e0a5fddc5ad4ffac0567078e114a;hp=bfe38a67e5858445e8f3ca8e74db66051ddb7e14;hpb=04ad4ade4c42aa716eae5ec12ba577eda4ab055e;p=bcachefs-tools-debian

diff --git a/libbcachefs/lru.h b/libbcachefs/lru.h
index bfe38a6..429dca8 100644
--- a/libbcachefs/lru.h
+++ b/libbcachefs/lru.h
@@ -2,18 +2,68 @@
 #ifndef _BCACHEFS_LRU_H
 #define _BCACHEFS_LRU_H
 
-int bch2_lru_invalid(const struct bch_fs *, struct bkey_s_c, int, struct printbuf *);
+#define LRU_TIME_BITS	48
+#define LRU_TIME_MAX	((1ULL << LRU_TIME_BITS) - 1)
+
+static inline u64 lru_pos_id(struct bpos pos)
+{
+	return pos.inode >> LRU_TIME_BITS;
+}
+
+static inline u64 lru_pos_time(struct bpos pos)
+{
+	return pos.inode & ~(~0ULL << LRU_TIME_BITS);
+}
+
+static inline struct bpos lru_pos(u16 lru_id, u64 dev_bucket, u64 time)
+{
+	struct bpos pos = POS(((u64) lru_id << LRU_TIME_BITS)|time, dev_bucket);
+
+	EBUG_ON(time > LRU_TIME_MAX);
+	EBUG_ON(lru_pos_id(pos) != lru_id);
+	EBUG_ON(lru_pos_time(pos) != time);
+	EBUG_ON(pos.offset != dev_bucket);
+
+	return pos;
+}
+
+#define BCH_LRU_TYPES()		\
+	x(read)			\
+	x(fragmentation)
+
+enum bch_lru_type {
+#define x(n) BCH_LRU_##n,
+	BCH_LRU_TYPES()
+#undef x
+};
+
+#define BCH_LRU_FRAGMENTATION_START	((1U << 16) - 1)
+
+static inline enum bch_lru_type lru_type(struct bkey_s_c l)
+{
+	u16 lru_id = l.k->p.inode >> 48;
+
+	if (lru_id == BCH_LRU_FRAGMENTATION_START)
+		return BCH_LRU_fragmentation;
+	return BCH_LRU_read;
+}
+
+int bch2_lru_invalid(struct bch_fs *, struct bkey_s_c,
+		     enum bkey_invalid_flags, struct printbuf *);
 void bch2_lru_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
 
-#define bch2_bkey_ops_lru (struct bkey_ops) {	\
+void bch2_lru_pos_to_text(struct printbuf *, struct bpos);
+
+#define bch2_bkey_ops_lru ((struct bkey_ops) {	\
 	.key_invalid	= bch2_lru_invalid,	\
 	.val_to_text	= bch2_lru_to_text,	\
-}
+	.min_val_size	= 8,			\
+})
 
-int bch2_lru_delete(struct btree_trans *, u64, u64, u64, struct bkey_s_c);
-int bch2_lru_set(struct btree_trans *, u64, u64, u64 *);
-int bch2_lru_change(struct btree_trans *, u64, u64, u64, u64 *, struct bkey_s_c);
+int bch2_lru_del(struct btree_trans *, u16, u64, u64);
+int bch2_lru_set(struct btree_trans *, u16, u64, u64);
+int bch2_lru_change(struct btree_trans *, u16, u64, u64, u64);
 
-int bch2_check_lrus(struct bch_fs *, bool);
+int bch2_check_lrus(struct bch_fs *);
 
 #endif /* _BCACHEFS_LRU_H */