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Diffstat (limited to 'drivers/md/bcache/btree.h')
-rw-r--r--drivers/md/bcache/btree.h62
1 files changed, 15 insertions, 47 deletions
diff --git a/drivers/md/bcache/btree.h b/drivers/md/bcache/btree.h
index 767e75570896..af065e97e55c 100644
--- a/drivers/md/bcache/btree.h
+++ b/drivers/md/bcache/btree.h
@@ -130,20 +130,12 @@ struct btree {
unsigned long flags;
uint16_t written; /* would be nice to kill */
uint8_t level;
- uint8_t nsets;
- uint8_t page_order;
-
- /*
- * Set of sorted keys - the real btree node - plus a binary search tree
- *
- * sets[0] is special; set[0]->tree, set[0]->prev and set[0]->data point
- * to the memory we have allocated for this btree node. Additionally,
- * set[0]->data points to the entire btree node as it exists on disk.
- */
- struct bset_tree sets[MAX_BSETS];
+
+ struct btree_keys keys;
/* For outstanding btree writes, used as a lock - protects write_idx */
- struct closure_with_waitlist io;
+ struct closure io;
+ struct semaphore io_mutex;
struct list_head list;
struct delayed_work work;
@@ -179,24 +171,19 @@ static inline struct btree_write *btree_prev_write(struct btree *b)
return b->writes + (btree_node_write_idx(b) ^ 1);
}
-static inline unsigned bset_offset(struct btree *b, struct bset *i)
+static inline struct bset *btree_bset_first(struct btree *b)
{
- return (((size_t) i) - ((size_t) b->sets->data)) >> 9;
+ return b->keys.set->data;
}
-static inline struct bset *write_block(struct btree *b)
+static inline struct bset *btree_bset_last(struct btree *b)
{
- return ((void *) b->sets[0].data) + b->written * block_bytes(b->c);
+ return bset_tree_last(&b->keys)->data;
}
-static inline bool bset_written(struct btree *b, struct bset_tree *t)
+static inline unsigned bset_block_offset(struct btree *b, struct bset *i)
{
- return t->data < write_block(b);
-}
-
-static inline bool bkey_written(struct btree *b, struct bkey *k)
-{
- return k < write_block(b)->start;
+ return bset_sector_offset(&b->keys, i) >> b->c->block_bits;
}
static inline void set_gc_sectors(struct cache_set *c)
@@ -204,21 +191,6 @@ static inline void set_gc_sectors(struct cache_set *c)
atomic_set(&c->sectors_to_gc, c->sb.bucket_size * c->nbuckets / 16);
}
-static inline struct bkey *bch_btree_iter_init(struct btree *b,
- struct btree_iter *iter,
- struct bkey *search)
-{
- return __bch_btree_iter_init(b, iter, search, b->sets);
-}
-
-static inline bool bch_ptr_invalid(struct btree *b, const struct bkey *k)
-{
- if (b->level)
- return bch_btree_ptr_invalid(b->c, k);
- else
- return bch_extent_ptr_invalid(b->c, k);
-}
-
void bkey_put(struct cache_set *c, struct bkey *k);
/* Looping macros */
@@ -229,17 +201,12 @@ void bkey_put(struct cache_set *c, struct bkey *k);
iter++) \
hlist_for_each_entry_rcu((b), (c)->bucket_hash + iter, hash)
-#define for_each_key_filter(b, k, iter, filter) \
- for (bch_btree_iter_init((b), (iter), NULL); \
- ((k) = bch_btree_iter_next_filter((iter), b, filter));)
-
-#define for_each_key(b, k, iter) \
- for (bch_btree_iter_init((b), (iter), NULL); \
- ((k) = bch_btree_iter_next(iter));)
-
/* Recursing down the btree */
struct btree_op {
+ /* for waiting on btree reserve in btree_split() */
+ wait_queue_t wait;
+
/* Btree level at which we start taking write locks */
short lock;
@@ -249,6 +216,7 @@ struct btree_op {
static inline void bch_btree_op_init(struct btree_op *op, int write_lock_level)
{
memset(op, 0, sizeof(struct btree_op));
+ init_wait(&op->wait);
op->lock = write_lock_level;
}
@@ -267,7 +235,7 @@ static inline void rw_unlock(bool w, struct btree *b)
(w ? up_write : up_read)(&b->lock);
}
-void bch_btree_node_read(struct btree *);
+void bch_btree_node_read_done(struct btree *);
void bch_btree_node_write(struct btree *, struct closure *);
void bch_btree_set_root(struct btree *);