#include "btree_locking.h"
#include "btree_update.h"
-struct btree_reserve {
- struct disk_reservation disk_res;
- unsigned nr;
- struct btree *b[BTREE_RESERVE_MAX];
-};
-
void __bch2_btree_calc_format(struct bkey_format_state *, struct btree *);
bool bch2_btree_node_format_fits(struct bch_fs *c, struct btree *,
struct bkey_format *);
-/* Btree node freeing/allocation: */
-
-/*
- * Tracks a btree node that has been (or is about to be) freed in memory, but
- * has _not_ yet been freed on disk (because the write that makes the new
- * node(s) visible and frees the old hasn't completed yet)
- */
-struct pending_btree_node_free {
- bool index_update_done;
+#define BTREE_UPDATE_NODES_MAX ((BTREE_MAX_DEPTH - 2) * 2 + GC_MERGE_NODES)
- __le64 seq;
- enum btree_id btree_id;
- unsigned level;
- __BKEY_PADDED(key, BKEY_BTREE_PTR_VAL_U64s_MAX);
-};
+#define BTREE_UPDATE_JOURNAL_RES (BTREE_UPDATE_NODES_MAX * (BKEY_BTREE_PTR_U64s_MAX + 1))
/*
* Tracks an in progress split/rewrite of a btree node and the update to the
struct bch_fs *c;
struct list_head list;
+ struct list_head unwritten_list;
/* What kind of update are we doing? */
enum {
enum btree_id btree_id;
- struct btree_reserve *reserve;
+ struct disk_reservation disk_res;
+ struct journal_preres journal_preres;
/*
* BTREE_INTERIOR_UPDATING_NODE:
struct btree *b;
struct list_head write_blocked_list;
- /*
- * BTREE_INTERIOR_UPDATING_AS: btree node we updated was freed, so now
- * we're now blocking another btree_update
- * @parent_as - btree_update that's waiting on our nodes to finish
- * writing, before it can make new nodes visible on disk
- * @wait - list of child btree_updates that are waiting on this
- * btree_update to make all the new nodes visible before they can free
- * their old btree nodes
- */
- struct btree_update *parent_as;
- struct closure_waitlist wait;
-
/*
* We may be freeing nodes that were dirty, and thus had journal entries
* pinned: we need to transfer the oldest of those pins to the
*/
struct journal_entry_pin journal;
- u64 journal_seq;
+ /* Preallocated nodes we reserve when we start the update: */
+ struct btree *prealloc_nodes[BTREE_UPDATE_NODES_MAX];
+ unsigned nr_prealloc_nodes;
- /*
- * Nodes being freed:
- * Protected by c->btree_node_pending_free_lock
- */
- struct pending_btree_node_free pending[BTREE_MAX_DEPTH + GC_MERGE_NODES];
- unsigned nr_pending;
+ /* Nodes being freed: */
+ struct keylist old_keys;
+ u64 _old_keys[BTREE_UPDATE_NODES_MAX *
+ BKEY_BTREE_PTR_VAL_U64s_MAX];
+
+ /* Nodes being added: */
+ struct keylist new_keys;
+ u64 _new_keys[BTREE_UPDATE_NODES_MAX *
+ BKEY_BTREE_PTR_VAL_U64s_MAX];
/* New nodes, that will be made reachable by this update: */
- struct btree *new_nodes[BTREE_MAX_DEPTH * 2 + GC_MERGE_NODES];
+ struct btree *new_nodes[BTREE_UPDATE_NODES_MAX];
unsigned nr_new_nodes;
+ open_bucket_idx_t open_buckets[BTREE_UPDATE_NODES_MAX *
+ BCH_REPLICAS_MAX];
+ open_bucket_idx_t nr_open_buckets;
+
+ unsigned journal_u64s;
+ u64 journal_entries[BTREE_UPDATE_JOURNAL_RES];
+
/* Only here to reduce stack usage on recursive splits: */
struct keylist parent_keys;
/*
u64 inline_keys[BKEY_BTREE_PTR_U64s_MAX * 3];
};
-#define for_each_pending_btree_node_free(c, as, p) \
- list_for_each_entry(as, &c->btree_interior_update_list, list) \
- for (p = as->pending; p < as->pending + as->nr_pending; p++)
-
void bch2_btree_node_free_inmem(struct bch_fs *, struct btree *,
struct btree_iter *);
void bch2_btree_node_free_never_inserted(struct bch_fs *, struct btree *);
+void bch2_btree_update_get_open_buckets(struct btree_update *, struct btree *);
+
struct btree *__bch2_btree_node_alloc_replacement(struct btree_update *,
struct btree *,
struct bkey_format);
void bch2_btree_update_done(struct btree_update *);
struct btree_update *
-bch2_btree_update_start(struct bch_fs *, enum btree_id, unsigned,
+bch2_btree_update_start(struct btree_trans *, enum btree_id, unsigned,
unsigned, struct closure *);
void bch2_btree_interior_update_will_free_node(struct btree_update *,
struct btree *);
+void bch2_btree_update_add_new_node(struct btree_update *, struct btree *);
void bch2_btree_insert_node(struct btree_update *, struct btree *,
struct btree_iter *, struct keylist *,
static inline unsigned btree_update_reserve_required(struct bch_fs *c,
struct btree *b)
{
- unsigned depth = btree_node_root(c, b)->level + 1;
+ unsigned depth = btree_node_root(c, b)->c.level + 1;
/*
* Number of nodes we might have to allocate in a worst case btree
* a new root, unless we're already at max depth:
*/
if (depth < BTREE_MAX_DEPTH)
- return (depth - b->level) * 2 + 1;
+ return (depth - b->c.level) * 2 + 1;
else
- return (depth - b->level) * 2 - 1;
+ return (depth - b->c.level) * 2 - 1;
}
static inline void btree_node_reset_sib_u64s(struct btree *b)
}
static inline void push_whiteout(struct bch_fs *c, struct btree *b,
- struct bkey_packed *k)
+ struct bpos pos)
{
- unsigned u64s = bkeyp_key_u64s(&b->format, k);
- struct bkey_packed *dst;
+ struct bkey_packed k;
+
+ BUG_ON(bch_btree_keys_u64s_remaining(c, b) < BKEY_U64s);
- BUG_ON(u64s > bch_btree_keys_u64s_remaining(c, b));
+ if (!bkey_pack_pos(&k, pos, b)) {
+ struct bkey *u = (void *) &k;
- b->whiteout_u64s += bkeyp_key_u64s(&b->format, k);
- dst = unwritten_whiteouts_start(c, b);
- memcpy_u64s(dst, k, u64s);
- dst->u64s = u64s;
- dst->type = KEY_TYPE_deleted;
+ bkey_init(u);
+ u->p = pos;
+ }
+
+ k.needs_whiteout = true;
+
+ b->whiteout_u64s += k.u64s;
+ bkey_copy(unwritten_whiteouts_start(c, b), &k);
}
/*
static inline bool bch2_btree_node_insert_fits(struct bch_fs *c,
struct btree *b, unsigned u64s)
{
- if (unlikely(btree_node_fake(b)))
+ if (unlikely(btree_node_need_rewrite(b)))
return false;
return u64s <= bch_btree_keys_u64s_remaining(c, b);
}
-ssize_t bch2_btree_updates_print(struct bch_fs *, char *);
+void bch2_btree_updates_to_text(struct printbuf *, struct bch_fs *);
size_t bch2_btree_interior_updates_nr_pending(struct bch_fs *);
+void bch2_journal_entries_to_btree_roots(struct bch_fs *, struct jset *);
+struct jset_entry *bch2_btree_roots_to_journal_entries(struct bch_fs *,
+ struct jset_entry *, struct jset_entry *);
+
+void bch2_fs_btree_interior_update_exit(struct bch_fs *);
+int bch2_fs_btree_interior_update_init(struct bch_fs *);
+
#endif /* _BCACHEFS_BTREE_UPDATE_INTERIOR_H */
projects / bcachefs-tools-debian / blobdiff