diff options
Diffstat (limited to 'drivers/md/bcache/bset.c')
-rw-r--r-- | drivers/md/bcache/bset.c | 112 |
1 files changed, 60 insertions, 52 deletions
diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c index f32216c..6bffde4 100644 --- a/drivers/md/bcache/bset.c +++ b/drivers/md/bcache/bset.c @@ -106,6 +106,43 @@ bad: return true; } +static bool ptr_bad_expensive_checks(struct btree *b, const struct bkey *k, + unsigned ptr) +{ + struct bucket *g = PTR_BUCKET(b->c, k, ptr); + char buf[80]; + + if (mutex_trylock(&b->c->bucket_lock)) { + if (b->level) { + if (KEY_DIRTY(k) || + g->prio != BTREE_PRIO || + (b->c->gc_mark_valid && + GC_MARK(g) != GC_MARK_METADATA)) + goto err; + + } else { + if (g->prio == BTREE_PRIO) + goto err; + + if (KEY_DIRTY(k) && + b->c->gc_mark_valid && + GC_MARK(g) != GC_MARK_DIRTY) + goto err; + } + mutex_unlock(&b->c->bucket_lock); + } + + return false; +err: + mutex_unlock(&b->c->bucket_lock); + bch_bkey_to_text(buf, sizeof(buf), k); + btree_bug(b, +"inconsistent pointer %s: bucket %zu pin %i prio %i gen %i last_gc %i mark %llu gc_gen %i", + buf, PTR_BUCKET_NR(b->c, k, ptr), atomic_read(&g->pin), + g->prio, g->gen, g->last_gc, GC_MARK(g), g->gc_gen); + return true; +} + bool bch_ptr_bad(struct btree *b, const struct bkey *k) { struct bucket *g; @@ -133,46 +170,12 @@ bool bch_ptr_bad(struct btree *b, const struct bkey *k) if (stale) return true; -#ifdef CONFIG_BCACHE_EDEBUG - if (!mutex_trylock(&b->c->bucket_lock)) - continue; - - if (b->level) { - if (KEY_DIRTY(k) || - g->prio != BTREE_PRIO || - (b->c->gc_mark_valid && - GC_MARK(g) != GC_MARK_METADATA)) - goto bug; - - } else { - if (g->prio == BTREE_PRIO) - goto bug; - - if (KEY_DIRTY(k) && - b->c->gc_mark_valid && - GC_MARK(g) != GC_MARK_DIRTY) - goto bug; - } - mutex_unlock(&b->c->bucket_lock); -#endif + if (expensive_debug_checks(b->c) && + ptr_bad_expensive_checks(b, k, i)) + return true; } return false; -#ifdef CONFIG_BCACHE_EDEBUG -bug: - mutex_unlock(&b->c->bucket_lock); - - { - char buf[80]; - - bch_bkey_to_text(buf, sizeof(buf), k); - btree_bug(b, -"inconsistent pointer %s: bucket %zu pin %i prio %i gen %i last_gc %i mark %llu gc_gen %i", - buf, PTR_BUCKET_NR(b->c, k, i), atomic_read(&g->pin), - g->prio, g->gen, g->last_gc, GC_MARK(g), g->gc_gen); - } - return true; -#endif } /* Key/pointer manipulation */ @@ -821,16 +824,16 @@ struct bkey *__bch_bset_search(struct btree *b, struct bset_tree *t, } else i = bset_search_write_set(b, t, search); -#ifdef CONFIG_BCACHE_EDEBUG - BUG_ON(bset_written(b, t) && - i.l != t->data->start && - bkey_cmp(tree_to_prev_bkey(t, - inorder_to_tree(bkey_to_cacheline(t, i.l), t)), - search) > 0); + if (expensive_debug_checks(b->c)) { + BUG_ON(bset_written(b, t) && + i.l != t->data->start && + bkey_cmp(tree_to_prev_bkey(t, + inorder_to_tree(bkey_to_cacheline(t, i.l), t)), + search) > 0); - BUG_ON(i.r != end(t->data) && - bkey_cmp(i.r, search) <= 0); -#endif + BUG_ON(i.r != end(t->data) && + bkey_cmp(i.r, search) <= 0); + } while (likely(i.l != i.r) && bkey_cmp(i.l, search) <= 0) @@ -871,12 +874,16 @@ void bch_btree_iter_push(struct btree_iter *iter, struct bkey *k, } struct bkey *__bch_btree_iter_init(struct btree *b, struct btree_iter *iter, - struct bkey *search, struct bset_tree *start) + struct bkey *search, struct bset_tree *start) { struct bkey *ret = NULL; iter->size = ARRAY_SIZE(iter->data); iter->used = 0; +#ifdef CONFIG_BCACHE_DEBUG + iter->b = b; +#endif + for (; start <= &b->sets[b->nsets]; start++) { ret = bch_bset_search(b, start, search); bch_btree_iter_push(iter, ret, end(start->data)); @@ -891,6 +898,8 @@ struct bkey *bch_btree_iter_next(struct btree_iter *iter) struct bkey *ret = NULL; if (!btree_iter_end(iter)) { + bch_btree_iter_next_check(iter); + ret = iter->data->k; iter->data->k = bkey_next(iter->data->k); @@ -1002,7 +1011,6 @@ static void btree_mergesort(struct btree *b, struct bset *out, out->keys = last ? (uint64_t *) bkey_next(last) - out->d : 0; pr_debug("sorted %i keys", out->keys); - bch_check_key_order(b, out); } static void __btree_sort(struct btree *b, struct btree_iter *iter, @@ -1063,15 +1071,15 @@ static void __btree_sort(struct btree *b, struct btree_iter *iter, void bch_btree_sort_partial(struct btree *b, unsigned start) { - size_t oldsize = 0, order = b->page_order, keys = 0; + size_t order = b->page_order, keys = 0; struct btree_iter iter; + int oldsize = bch_count_data(b); + __bch_btree_iter_init(b, &iter, NULL, &b->sets[start]); BUG_ON(b->sets[b->nsets].data == write_block(b) && (b->sets[b->nsets].size || b->nsets)); - if (b->written) - oldsize = bch_count_data(b); if (start) { unsigned i; @@ -1087,7 +1095,7 @@ void bch_btree_sort_partial(struct btree *b, unsigned start) __btree_sort(b, &iter, start, order, false); - EBUG_ON(b->written && bch_count_data(b) != oldsize); + EBUG_ON(b->written && oldsize >= 0 && bch_count_data(b) != oldsize); } void bch_btree_sort_and_fix_extents(struct btree *b, struct btree_iter *iter) |