1 files changed, 99 insertions, 0 deletions
diff --git a/libbcache/buckets_types.h b/libbcache/buckets_types.h
new file mode 100644
index 00000000..6bbdcd26
--- /dev/null
+++ b/libbcache/buckets_types.h
@@ -0,0 +1,99 @@
+#ifndef _BUCKETS_TYPES_H
+#define _BUCKETS_TYPES_H
+
+struct bucket_mark {
+	union {
+	struct {
+		u64		counter;
+	};
+
+	struct {
+		u8		gen;
+
+		/* generation copygc is going to move this bucket into */
+		unsigned	copygc:1;
+		unsigned	wait_on_journal:1;
+
+		/*
+		 * If this bucket ever had metadata in it, the allocator must
+		 * increment its gen before we reuse it:
+		 */
+		unsigned	had_metadata:1;
+
+		unsigned	owned_by_allocator:1;
+		unsigned	is_metadata:1;
+
+		u16		cached_sectors;
+		u16		dirty_sectors;
+
+		/*
+		 * low bits of journal sequence number when this bucket was most
+		 * recently modified:
+		 */
+		u16		journal_seq;
+	};
+	};
+};
+
+struct bucket {
+	union {
+		struct {
+			u16	read_prio;
+			u16	write_prio;
+		};
+		u16		prio[2];
+	};
+
+	union {
+		struct bucket_mark	_mark;
+		const struct bucket_mark mark;
+	};
+};
+
+struct bucket_stats_cache {
+	u64			buckets_dirty;
+	u64			buckets_cached;
+	u64			buckets_meta;
+	u64			buckets_alloc;
+
+	u64			sectors_dirty;
+	u64			sectors_cached;
+	u64			sectors_meta;
+};
+
+enum s_alloc {
+	S_META,
+	S_DIRTY,
+	S_CACHED,
+	S_ALLOC_NR,
+};
+
+enum s_compressed {
+	S_COMPRESSED,
+	S_UNCOMPRESSED,
+	S_COMPRESSED_NR,
+};
+
+struct bucket_stats_cache_set {
+	/* all fields are in units of 512 byte sectors: */
+	u64			s[S_COMPRESSED_NR][S_ALLOC_NR];
+	u64			persistent_reserved;
+	u64			online_reserved;
+	u64			available_cache;
+};
+
+struct bucket_heap_entry {
+	struct bucket *g;
+	unsigned long val;
+};
+
+/*
+ * A reservation for space on disk:
+ */
+struct disk_reservation {
+	u64		sectors;
+	u32		gen;
+	unsigned	nr_replicas;
+};
+
+#endif /* _BUCKETS_TYPES_H */