Add a subcommand for resizing the journal

[bcachefs-tools-debian] / libbcachefs / btree_cache.h

diff --git a/libbcachefs/btree_cache.h b/libbcachefs/btree_cache.h
index c5873c58439cf8d39927cb699386592dd2642a3b..8a19e60e9258014816b6d5a8c4ac54e00587a7f2 100644 (file)
--- a/libbcachefs/btree_cache.h
+++ b/libbcachefs/btree_cache.h
@@ -23,7 +23,10 @@ struct btree *bch2_btree_node_mem_alloc(struct bch_fs *);
 
 struct btree *bch2_btree_node_get(struct bch_fs *, struct btree_iter *,
                                  const struct bkey_i *, unsigned,
-                                 enum six_lock_type);
+                                 enum six_lock_type, unsigned long);
+
+struct btree *bch2_btree_node_get_noiter(struct bch_fs *, const struct bkey_i *,
+                                        enum btree_id, unsigned);
 
 struct btree *bch2_btree_node_get_sibling(struct bch_fs *, struct btree_iter *,
                                struct btree *, enum btree_node_sibling);
@@ -35,13 +38,29 @@ void bch2_fs_btree_cache_exit(struct bch_fs *);
 int bch2_fs_btree_cache_init(struct bch_fs *);
 void bch2_fs_btree_cache_init_early(struct btree_cache *);
 
-#define PTR_HASH(_k)   *((u64 *) &bkey_i_to_btree_ptr_c(_k)->v)
+static inline u64 btree_ptr_hash_val(const struct bkey_i *k)
+{
+       switch (k->k.type) {
+       case KEY_TYPE_btree_ptr:
+               return *((u64 *) bkey_i_to_btree_ptr_c(k)->v.start);
+       case KEY_TYPE_btree_ptr_v2:
+               return bkey_i_to_btree_ptr_v2_c(k)->v.seq;
+       default:
+               return 0;
+       }
+}
+
+static inline struct btree *btree_node_mem_ptr(const struct bkey_i *k)
+{
+       return k->k.type == KEY_TYPE_btree_ptr_v2
+               ? (void *)(unsigned long)bkey_i_to_btree_ptr_v2_c(k)->v.mem_ptr
+               : NULL;
+}
 
 /* is btree node in hash table? */
 static inline bool btree_node_hashed(struct btree *b)
 {
-       return b->key.k.type == KEY_TYPE_btree_ptr &&
-               PTR_HASH(&b->key);
+       return b->hash_val != 0;
 }
 
 #define for_each_cached_btree(_b, _c, _tbl, _iter, _pos)               \
@@ -60,14 +79,9 @@ static inline size_t btree_max_u64s(struct bch_fs *c)
        return (btree_bytes(c) - sizeof(struct btree_node)) / sizeof(u64);
 }
 
-static inline size_t btree_page_order(struct bch_fs *c)
-{
-       return get_order(btree_bytes(c));
-}
-
 static inline size_t btree_pages(struct bch_fs *c)
 {
-       return 1 << btree_page_order(c);
+       return btree_bytes(c) / PAGE_SIZE;
 }
 
 static inline unsigned btree_blocks(struct bch_fs *c)
@@ -75,14 +89,14 @@ static inline unsigned btree_blocks(struct bch_fs *c)
        return c->opts.btree_node_size >> c->block_bits;
 }
 
-#define BTREE_SPLIT_THRESHOLD(c)               (btree_blocks(c) * 3 / 4)
+#define BTREE_SPLIT_THRESHOLD(c)               (btree_max_u64s(c) * 2 / 3)
 
 #define BTREE_FOREGROUND_MERGE_THRESHOLD(c)    (btree_max_u64s(c) * 1 / 3)
 #define BTREE_FOREGROUND_MERGE_HYSTERESIS(c)                   \
        (BTREE_FOREGROUND_MERGE_THRESHOLD(c) +                  \
         (BTREE_FOREGROUND_MERGE_THRESHOLD(c) << 2))
 
-#define btree_node_root(_c, _b)        ((_c)->btree_roots[(_b)->btree_id].b)
+#define btree_node_root(_c, _b)        ((_c)->btree_roots[(_b)->c.btree_id].b)
 
 void bch2_btree_node_to_text(struct printbuf *, struct bch_fs *,
                             struct btree *);