bch2_btree_iter_set_pos(iter, POS(ca->dev_idx, b));
retry:
k = bch2_btree_iter_peek_slot(iter);
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (ret)
return ret;
* We might have got -EINTR because trylock failed, and we're
* holding other locks that would cause us to deadlock:
*/
- for_each_linked_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
if (btree_iter_cmp(iter, linked) < 0)
__bch2_btree_iter_unlock(linked);
}
}
- bch2_btree_iter_relock(iter);
+ bch2_btree_trans_relock(iter->trans);
}
out:
if (btree_lock_want(iter, level + 1) == BTREE_NODE_UNLOCKED)
btree_node_unlock(iter, level + 1);
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
BUG_ON((!may_drop_locks || !IS_ERR(ret)) &&
(iter->uptodate >= BTREE_ITER_NEED_RELOCK ||
EBUG_ON(iter->l[b->level].b != b);
EBUG_ON(iter->l[b->level].lock_seq + 1 != b->lock.state.seq);
- for_each_btree_iter_with_node(iter, b, linked)
+ trans_for_each_iter_with_node(iter->trans, b, linked)
linked->l[b->level].lock_seq += 2;
six_unlock_write(&b->lock);
EBUG_ON(btree_node_read_locked(iter, b->level));
- for_each_linked_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
if (linked->l[b->level].b == b &&
btree_node_read_locked(linked, b->level))
readers++;
if (iter->uptodate == BTREE_ITER_NEED_RELOCK)
iter->uptodate = BTREE_ITER_NEED_PEEK;
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
+
return iter->uptodate < BTREE_ITER_NEED_RELOCK;
}
bool ret = true;
/* Check if it's safe to block: */
- for_each_btree_iter(iter, linked) {
+ trans_for_each_iter(iter->trans, linked) {
if (!linked->nodes_locked)
continue;
/* Btree iterator locking: */
#ifdef CONFIG_BCACHEFS_DEBUG
-void __bch2_btree_iter_verify_locks(struct btree_iter *iter)
+void bch2_btree_iter_verify_locks(struct btree_iter *iter)
{
unsigned l;
}
}
-void bch2_btree_iter_verify_locks(struct btree_iter *iter)
+void bch2_btree_trans_verify_locks(struct btree_trans *trans)
{
- struct btree_iter *linked;
-
- for_each_btree_iter(iter, linked)
- __bch2_btree_iter_verify_locks(linked);
+ struct btree_iter *iter;
+ trans_for_each_iter(trans, iter)
+ bch2_btree_iter_verify_locks(iter);
}
#endif
__flatten
-static bool __bch2_btree_iter_relock(struct btree_iter *iter)
+static bool bch2_btree_iter_relock(struct btree_iter *iter)
{
return iter->uptodate >= BTREE_ITER_NEED_RELOCK
? btree_iter_get_locks(iter, false)
: true;
}
-bool bch2_btree_iter_relock(struct btree_iter *iter)
-{
- struct btree_iter *linked;
- bool ret = true;
-
- for_each_btree_iter(iter, linked)
- ret &= __bch2_btree_iter_relock(linked);
-
- return ret;
-}
-
bool __bch2_btree_iter_upgrade(struct btree_iter *iter,
unsigned new_locks_want)
{
* on iterators that might lock ancestors before us to avoid getting
* -EINTR later:
*/
- for_each_linked_btree_iter(iter, linked)
- if (linked->btree_id == iter->btree_id &&
+ trans_for_each_iter(iter->trans, linked)
+ if (linked != iter &&
+ linked->btree_id == iter->btree_id &&
btree_iter_cmp(linked, iter) <= 0 &&
linked->locks_want < new_locks_want) {
linked->locks_want = new_locks_want;
* might have had to modify locks_want on linked iterators due to lock
* ordering:
*/
- for_each_btree_iter(iter, linked) {
+ trans_for_each_iter(iter->trans, linked) {
unsigned new_locks_want = downgrade_to ?:
(linked->flags & BTREE_ITER_INTENT ? 1 : 0);
}
}
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
}
int bch2_btree_iter_unlock(struct btree_iter *iter)
{
struct btree_iter *linked;
- for_each_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
__bch2_btree_iter_unlock(linked);
- return iter->flags & BTREE_ITER_ERROR ? -EIO : 0;
+ return btree_iter_err(iter);
}
+bool bch2_btree_trans_relock(struct btree_trans *trans)
+{
+ struct btree_iter *iter;
+ bool ret = true;
+
+ trans_for_each_iter(trans, iter)
+ ret &= bch2_btree_iter_relock(iter);
+
+ return ret;
+}
+
+void bch2_btree_trans_unlock(struct btree_trans *trans)
+{
+ struct btree_iter *iter;
+
+ trans_for_each_iter(trans, iter)
+ __bch2_btree_iter_unlock(iter);
+}
+
+/* Btree transaction locking: */
+
/* Btree iterator: */
#ifdef CONFIG_BCACHEFS_DEBUG
{
struct btree_iter *linked;
- for_each_btree_iter_with_node(iter, b, linked)
+ trans_for_each_iter_with_node(iter->trans, b, linked)
__bch2_btree_iter_verify(linked, b);
}
__bch2_btree_node_iter_fix(iter, b, node_iter, t,
where, clobber_u64s, new_u64s);
- for_each_btree_iter_with_node(iter, b, linked)
+ trans_for_each_iter_with_node(iter->trans, b, linked)
__bch2_btree_node_iter_fix(linked, b,
&linked->l[b->level].iter, t,
where, clobber_u64s, new_u64s);
enum btree_node_locked_type t;
struct btree_iter *linked;
- for_each_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
if (btree_iter_pos_in_node(linked, b)) {
/*
* bch2_btree_iter_node_drop() has already been called -
iter->l[level].b = BTREE_ITER_NOT_END;
mark_btree_node_unlocked(iter, level);
- for_each_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
if (linked->l[level].b == b) {
__btree_node_unlock(linked, level);
linked->l[level].b = BTREE_ITER_NOT_END;
{
struct btree_iter *linked;
- for_each_btree_iter_with_node(iter, b, linked)
+ trans_for_each_iter_with_node(iter->trans, b, linked)
__btree_iter_init(linked, b->level);
}
iter = iter->next;
} while (iter != sorted_iters);
- ret = btree_iter_linked(iter) ? -EINTR : 0;
+ ret = btree_trans_has_multiple_iters(iter->trans) ? -EINTR : 0;
out:
bch2_btree_cache_cannibalize_unlock(c);
return ret;
if (unlikely(iter->level >= BTREE_MAX_DEPTH))
return 0;
- if (__bch2_btree_iter_relock(iter))
+ if (bch2_btree_iter_relock(iter))
return 0;
/*
iter->uptodate = BTREE_ITER_NEED_PEEK;
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
__bch2_btree_iter_verify(iter, iter->l[iter->level].b);
return 0;
}
if (unlikely(ret))
ret = btree_iter_traverse_error(iter, ret);
- BUG_ON(ret == -EINTR && !btree_iter_linked(iter));
+ BUG_ON(ret == -EINTR && !btree_trans_has_multiple_iters(iter->trans));
return ret;
}
(iter->btree_id == BTREE_ID_EXTENTS &&
type != BTREE_ITER_NODES));
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
}
/* Iterate across nodes (leaf and interior nodes) */
if (!btree_iter_linked(iter))
return;
- for_each_linked_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
if (linked->next == iter) {
linked->next = iter->next;
iter->next = iter;
struct btree_iter *iter)
{
ssize_t idx = btree_trans_iter_idx(trans, iter);
- int ret = (iter->flags & BTREE_ITER_ERROR) ? -EIO : 0;
+ int ret = btree_iter_err(iter);
trans->iters_live &= ~(1ULL << idx);
return ret;
int bch2_trans_iter_free(struct btree_trans *trans,
struct btree_iter *iter)
{
- int ret = (iter->flags & BTREE_ITER_ERROR) ? -EIO : 0;
+ int ret = btree_iter_err(iter);
__bch2_trans_iter_free(trans, btree_trans_iter_idx(trans, iter));
return ret;
int bch2_trans_iter_free_on_commit(struct btree_trans *trans,
struct btree_iter *iter)
{
- int ret = (iter->flags & BTREE_ITER_ERROR) ? -EIO : 0;
+ int ret = btree_iter_err(iter);
trans->iters_unlink_on_commit |=
1ULL << btree_trans_iter_idx(trans, iter);
unsigned idx = __ffs(iters);
struct btree_iter *iter = &trans->iters[idx];
- if (iter->flags & BTREE_ITER_ERROR)
- ret = -EIO;
+ ret = ret ?: btree_iter_err(iter);
__bch2_btree_iter_unlock(iter);
iters ^= 1 << idx;
return btree_iter_node(iter, b->level + 1);
}
+static inline bool btree_trans_has_multiple_iters(const struct btree_trans *trans)
+{
+ return hweight64(trans->iters_linked) > 1;
+}
+
static inline bool btree_iter_linked(const struct btree_iter *iter)
{
return iter->next != iter;
}
+static inline int btree_iter_err(const struct btree_iter *iter)
+{
+ return iter->flags & BTREE_ITER_ERROR ? -EIO : 0;
+}
+
+/* Iterate over iters within a transaction: */
+
+static inline struct btree_iter *
+__trans_next_iter(struct btree_trans *trans, struct btree_iter *iter)
+{
+ unsigned idx;
+
+ /* XXX expensive pointer subtraction: */
+
+ for (idx = iter - trans->iters;
+ idx < trans->nr_iters;
+ idx++)
+ if (trans->iters_linked & (1ULL << idx))
+ return &trans->iters[idx];
+
+ return NULL;
+}
+
+#define trans_for_each_iter(_trans, _iter) \
+ for (_iter = (_trans)->iters; \
+ (_iter = __trans_next_iter((_trans), _iter)); \
+ _iter++)
+
static inline bool __iter_has_node(const struct btree_iter *iter,
const struct btree *b)
{
}
static inline struct btree_iter *
-__next_linked_iter(struct btree_iter *iter, struct btree_iter *linked)
+__trans_next_iter_with_node(struct btree_trans *trans, struct btree *b,
+ struct btree_iter *iter)
{
- return linked->next != iter ? linked->next : NULL;
-}
+ unsigned idx;
-static inline struct btree_iter *
-__next_iter_with_node(struct btree_iter *iter, struct btree *b,
- struct btree_iter *linked)
-{
- while (linked && !__iter_has_node(linked, b))
- linked = __next_linked_iter(iter, linked);
+ /* XXX expensive pointer subtraction: */
+
+ for (idx = iter - trans->iters;
+ idx < trans->nr_iters;
+ idx++) {
+ if (!(trans->iters_linked & (1ULL << idx)))
+ continue;
- return linked;
+ iter = &trans->iters[idx];
+ if (__iter_has_node(iter, b))
+ return iter;
+ }
+
+ return NULL;
}
-/**
- * for_each_btree_iter - iterate over all iterators linked with @_iter,
- * including @_iter
- */
-#define for_each_btree_iter(_iter, _linked) \
- for ((_linked) = (_iter); (_linked); \
- (_linked) = __next_linked_iter(_iter, _linked))
-
-/**
- * for_each_btree_iter_with_node - iterate over all iterators linked with @_iter
- * that also point to @_b
- *
- * @_b is assumed to be locked by @_iter
- *
- * Filters out iterators that don't have a valid btree_node iterator for @_b -
- * i.e. iterators for which bch2_btree_node_relock() would not succeed.
- */
-#define for_each_btree_iter_with_node(_iter, _b, _linked) \
- for ((_linked) = (_iter); \
- ((_linked) = __next_iter_with_node(_iter, _b, _linked)); \
- (_linked) = __next_linked_iter(_iter, _linked))
-
-/**
- * for_each_linked_btree_iter - iterate over all iterators linked with @_iter,
- * _not_ including @_iter
- */
-#define for_each_linked_btree_iter(_iter, _linked) \
- for ((_linked) = (_iter)->next; \
- (_linked) != (_iter); \
- (_linked) = (_linked)->next)
+#define trans_for_each_iter_with_node(_trans, _b, _iter) \
+ for (_iter = (_trans)->iters; \
+ (_iter = __trans_next_iter_with_node((_trans), (_b), _iter));\
+ _iter++)
#ifdef CONFIG_BCACHEFS_DEBUG
void bch2_btree_iter_verify(struct btree_iter *, struct btree *);
-void bch2_btree_iter_verify_locks(struct btree_iter *);
+void bch2_btree_trans_verify_locks(struct btree_trans *);
#else
static inline void bch2_btree_iter_verify(struct btree_iter *iter,
struct btree *b) {}
-static inline void bch2_btree_iter_verify_locks(struct btree_iter *iter) {}
+static inline void bch2_btree_trans_verify_locks(struct btree_trans *iter) {}
#endif
void bch2_btree_node_iter_fix(struct btree_iter *, struct btree *,
unsigned, unsigned);
int bch2_btree_iter_unlock(struct btree_iter *);
-bool bch2_btree_iter_relock(struct btree_iter *);
+
+bool bch2_btree_trans_relock(struct btree_trans *);
+void bch2_btree_trans_unlock(struct btree_trans *);
bool __bch2_btree_iter_upgrade(struct btree_iter *, unsigned);
bool __bch2_btree_iter_upgrade_nounlock(struct btree_iter *, unsigned);
!IS_ERR_OR_NULL((_k).k); \
(_k) = __bch2_btree_iter_next(_iter, _flags))
-static inline int btree_iter_err(struct bkey_s_c k)
+static inline int bkey_err(struct bkey_s_c k)
{
return PTR_ERR_OR_ZERO(k.k);
}
{
struct btree_iter *linked;
- for_each_linked_btree_iter(iter, linked)
- if (linked->l[level].b == b &&
+ trans_for_each_iter(iter->trans, linked)
+ if (linked != iter &&
+ linked->l[level].b == b &&
btree_node_locked_type(linked, level) >= want) {
six_lock_increment(&b->lock, want);
return true;
{
struct btree_iter *linked;
- for_each_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
BUG_ON(linked->l[b->level].b == b);
/*
bch2_btree_node_free_inmem(c, b, iter);
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
bch2_time_stats_update(&c->times[BCH_TIME_btree_node_split],
start_time);
btree_update_updated_node(as, b);
- for_each_btree_iter_with_node(iter, b, linked)
+ trans_for_each_iter_with_node(iter->trans, b, linked)
bch2_btree_node_iter_peek(&linked->l[b->level].iter, b);
bch2_btree_iter_verify(iter, b);
* We already have a disk reservation and open buckets pinned; this
* allocation must not block:
*/
- for_each_btree_iter(iter, linked)
+ trans_for_each_iter(iter->trans, linked)
if (linked->btree_id == BTREE_ID_EXTENTS)
flags |= BTREE_INSERT_USE_RESERVE;
if (flags & BTREE_INSERT_NOUNLOCK)
return -EINTR;
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(iter->trans);
down_read(&c->gc_lock);
- if (btree_iter_linked(iter))
+ if (!bch2_btree_trans_relock(iter->trans))
ret = -EINTR;
}
if (!(flags & BTREE_INSERT_GC_LOCK_HELD))
up_read(&c->gc_lock);
out:
- bch2_btree_iter_verify_locks(iter);
+ bch2_btree_trans_verify_locks(iter->trans);
/*
* Don't downgrade locks here: we're called after successful insert,
return -EINTR;
if (!down_read_trylock(&c->gc_lock)) {
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(iter->trans);
down_read(&c->gc_lock);
- if (!bch2_btree_iter_relock(iter)) {
+ if (!bch2_btree_trans_relock(iter->trans)) {
ret = -EINTR;
goto err;
}
/* bch2_btree_reserve_get will unlock */
ret = bch2_btree_cache_cannibalize_lock(c, &cl);
if (ret) {
- ret = -EINTR;
-
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(iter->trans);
up_read(&c->gc_lock);
closure_sync(&cl);
down_read(&c->gc_lock);
- if (!bch2_btree_iter_relock(iter))
+ if (!bch2_btree_trans_relock(iter->trans)) {
+ ret = -EINTR;
goto err;
+ }
}
new_hash = bch2_btree_node_mem_alloc(c);
if (ret != -EINTR)
goto err;
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(iter->trans);
up_read(&c->gc_lock);
closure_sync(&cl);
down_read(&c->gc_lock);
- if (!bch2_btree_iter_relock(iter))
+ if (!bch2_btree_trans_relock(iter->trans))
goto err;
}
bch2_btree_node_unlock_write(i->iter->l[0].b, i->iter);
}
-static bool btree_trans_relock(struct btree_trans *trans)
-{
- struct btree_insert_entry *i;
-
- trans_for_each_update_iter(trans, i)
- return bch2_btree_iter_relock(i->iter);
- return true;
-}
-
-static void btree_trans_unlock(struct btree_trans *trans)
-{
- struct btree_insert_entry *i;
-
- trans_for_each_update_iter(trans, i) {
- bch2_btree_iter_unlock(i->iter);
- break;
- }
-}
-
static inline int btree_trans_cmp(struct btree_insert_entry l,
struct btree_insert_entry r)
{
EBUG_ON((i->iter->flags & BTREE_ITER_IS_EXTENTS) &&
!(trans->flags & BTREE_INSERT_ATOMIC));
-
- bch2_btree_iter_verify_locks(i->iter);
}
BUG_ON(debug_check_bkeys(c) &&
if (ret != -EAGAIN)
return ret;
- btree_trans_unlock(trans);
+ bch2_btree_trans_unlock(trans);
ret = bch2_journal_preres_get(&c->journal,
&trans->journal_preres, u64s, 0);
if (ret)
return ret;
- if (!btree_trans_relock(trans)) {
+ if (!bch2_btree_trans_relock(trans)) {
trans_restart(" (iter relock after journal preres get blocked)");
return -EINTR;
}
* have been traversed/locked, depending on what the caller was
* doing:
*/
- trans_for_each_update_iter(trans, i) {
- for_each_btree_iter(i->iter, linked)
- if (linked->uptodate < BTREE_ITER_NEED_RELOCK)
- linked->flags |= BTREE_ITER_NOUNLOCK;
- break;
- }
+ trans_for_each_iter(trans, linked)
+ if (linked->uptodate < BTREE_ITER_NEED_RELOCK)
+ linked->flags |= BTREE_ITER_NOUNLOCK;
}
trans_for_each_update_iter(trans, i)
return ret;
}
- if (btree_trans_relock(trans))
+ if (bch2_btree_trans_relock(trans))
return 0;
trans_restart(" (iter relock after marking replicas)");
ret = -EINTR;
break;
case BTREE_INSERT_NEED_JOURNAL_RES:
- btree_trans_unlock(trans);
+ bch2_btree_trans_unlock(trans);
ret = bch2_trans_journal_res_get(trans, JOURNAL_RES_GET_CHECK);
if (ret)
return ret;
- if (btree_trans_relock(trans))
+ if (bch2_btree_trans_relock(trans))
return 0;
trans_restart(" (iter relock after journal res get blocked)");
goto err;
}
- if (i->iter->flags & BTREE_ITER_ERROR) {
- ret = -EIO;
+ ret = btree_iter_err(i->iter);
+ if (ret)
goto err;
- }
}
ret = do_btree_insert_at(trans, stopped_at);
bch2_btree_iter_downgrade(i->iter);
err:
/* make sure we didn't drop or screw up locks: */
- trans_for_each_update_iter(trans, i) {
- bch2_btree_iter_verify_locks(i->iter);
- break;
- }
+ bch2_btree_trans_verify_locks(trans);
- trans_for_each_update_iter(trans, i) {
- for_each_btree_iter(i->iter, linked)
- linked->flags &= ~BTREE_ITER_NOUNLOCK;
- break;
- }
+ trans_for_each_iter(trans, linked)
+ linked->flags &= ~BTREE_ITER_NOUNLOCK;
return ret;
}
trans_for_each_update(trans, i)
btree_insert_entry_checks(trans, i);
+ bch2_btree_trans_verify_locks(trans);
if (unlikely(!(trans->flags & BTREE_INSERT_NOCHECK_RW) &&
!percpu_ref_tryget(&c->writes))) {
if (likely(!(trans->flags & BTREE_INSERT_LAZY_RW)))
return -EROFS;
- btree_trans_unlock(trans);
+ bch2_btree_trans_unlock(trans);
ret = bch2_fs_read_write_early(c);
if (ret)
percpu_ref_get(&c->writes);
- if (!btree_trans_relock(trans)) {
+ if (!bch2_btree_trans_relock(trans)) {
ret = -EINTR;
goto err;
}
iter = bch2_trans_get_iter(&trans, id, start, BTREE_ITER_INTENT);
while ((k = bch2_btree_iter_peek(iter)).k &&
- !(ret = btree_iter_err(k)) &&
+ !(ret = bkey_err(k)) &&
bkey_cmp(iter->pos, end) < 0) {
unsigned max_sectors = KEY_SIZE_MAX & (~0 << c->block_bits);
/* really shouldn't be using a bare, unpadded bkey_i */
iter = bch2_trans_get_iter(&trans, i->id, i->from, BTREE_ITER_PREFETCH);
k = bch2_btree_iter_peek(iter);
- while (k.k && !(err = btree_iter_err(k))) {
+ while (k.k && !(err = bkey_err(k))) {
bch2_bkey_val_to_text(&PBUF(i->buf), i->c, k);
i->bytes = strlen(i->buf);
BUG_ON(i->bytes >= PAGE_SIZE);
iter = bch2_trans_get_iter(&trans, i->id, i->from, BTREE_ITER_PREFETCH);
while ((k = bch2_btree_iter_peek(iter)).k &&
- !(err = btree_iter_err(k))) {
+ !(err = bkey_err(k))) {
struct btree_iter_level *l = &iter->l[0];
struct bkey_packed *_k =
bch2_btree_node_iter_peek(&l->iter, l->b);
POS(0, stripe_idx),
BTREE_ITER_SLOTS);
k = bch2_btree_iter_peek_slot(iter);
- if (btree_iter_err(k) || k.k->type != KEY_TYPE_stripe) {
+ if (bkey_err(k) || k.k->type != KEY_TYPE_stripe) {
__bcache_io_error(c,
"error doing reconstruct read: stripe not found");
kfree(buf);
if (!__ec_stripe_mem_alloc(c, idx, GFP_NOWAIT|__GFP_NOWARN))
return 0;
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(iter->trans);
if (!__ec_stripe_mem_alloc(c, idx, GFP_KERNEL))
return -EINTR;
BTREE_ITER_INTENT);
while ((k = bch2_btree_iter_peek(iter)).k &&
- !(ret = btree_iter_err(k)) &&
+ !(ret = bkey_err(k)) &&
bkey_cmp(bkey_start_pos(k.k), pos->p) < 0) {
idx = extent_matches_stripe(c, &s->key.v, k);
if (idx < 0) {
bch2_btree_iter_set_pos(iter, POS(0, idx));
k = bch2_btree_iter_peek_slot(iter);
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (ret)
return ret;
* carefully not advancing past @new and thus whatever leaf node
* @_iter currently points to:
*/
- BUG_ON(btree_iter_err(old));
+ BUG_ON(bkey_err(old));
if (allocating &&
!*allocating &&
if (i_sectors_delta ||
new_i_size > inode->ei_inode.bi_size) {
if (c->opts.new_inode_updates) {
- bch2_btree_iter_unlock(extent_iter);
+ bch2_btree_trans_unlock(trans);
mutex_lock(&inode->ei_update_lock);
- if (!bch2_btree_iter_relock(extent_iter)) {
+ if (!bch2_btree_trans_relock(trans)) {
mutex_unlock(&inode->ei_update_lock);
return -EINTR;
}
}
}
-static void bchfs_read(struct bch_fs *c, struct btree_iter *iter,
+static void bchfs_read(struct btree_trans *trans, struct btree_iter *iter,
struct bch_read_bio *rbio, u64 inum,
struct readpages_iter *readpages_iter)
{
+ struct bch_fs *c = trans->c;
struct bio *bio = &rbio->bio;
int flags = BCH_READ_RETRY_IF_STALE|
BCH_READ_MAY_PROMOTE;
BUG_ON(!k.k);
if (IS_ERR(k.k)) {
- int ret = bch2_btree_iter_unlock(iter);
+ int ret = btree_iter_err(iter);
BUG_ON(!ret);
bcache_io_error(c, bio, "btree IO error %i", ret);
bio_endio(bio);
}
bkey_reassemble(&tmp.k, k);
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(trans);
k = bkey_i_to_s_c(&tmp.k);
if (readpages_iter) {
rbio->bio.bi_end_io = bch2_readpages_end_io;
__bio_add_page(&rbio->bio, page, PAGE_SIZE, 0);
- bchfs_read(c, iter, rbio, inode->v.i_ino, &readpages_iter);
+ bchfs_read(&trans, iter, rbio, inode->v.i_ino,
+ &readpages_iter);
}
bch2_pagecache_add_put(&inode->ei_pagecache_lock);
iter = bch2_trans_get_iter(&trans, BTREE_ID_EXTENTS, POS_MIN,
BTREE_ITER_SLOTS);
- bchfs_read(c, iter, rbio, inum, NULL);
+ bchfs_read(&trans, iter, rbio, inum, NULL);
bch2_trans_exit(&trans);
}
BTREE_ITER_INTENT);
while ((k = bch2_btree_iter_peek(iter)).k &&
- !(ret = btree_iter_err(k)) &&
+ !(ret = bkey_err(k)) &&
bkey_cmp(iter->pos, end) < 0) {
struct disk_reservation disk_res =
bch2_disk_reservation_init(c, 0);
ret = bch2_btree_iter_traverse(dst);
if (ret)
- goto btree_iter_err;
+ goto bkey_err;
bch2_btree_iter_set_pos(src,
POS(dst->pos.inode, dst->pos.offset + (len >> 9)));
k = bch2_btree_iter_peek_slot(src);
- if ((ret = btree_iter_err(k)))
- goto btree_iter_err;
+ if ((ret = bkey_err(k)))
+ goto bkey_err;
bkey_reassemble(©.k, k);
dst, ©.k,
0, true, true, NULL);
bch2_disk_reservation_put(c, &disk_res);
-btree_iter_err:
+bkey_err:
if (ret == -EINTR)
ret = 0;
if (ret)
struct bkey_s_c k;
k = bch2_btree_iter_peek_slot(iter);
- if ((ret = btree_iter_err(k)))
- goto btree_iter_err;
+ if ((ret = bkey_err(k)))
+ goto bkey_err;
/* already reserved */
if (k.k->type == KEY_TYPE_reservation &&
"a_res,
sectors, true);
if (unlikely(ret))
- goto btree_iter_err;
+ goto bkey_err;
}
if (reservation.v.nr_replicas < replicas ||
ret = bch2_disk_reservation_get(c, &disk_res, sectors,
replicas, 0);
if (unlikely(ret))
- goto btree_iter_err;
+ goto bkey_err;
reservation.v.nr_replicas = disk_res.nr_replicas;
}
&disk_res, "a_res,
iter, &reservation.k_i,
0, true, true, NULL);
-btree_iter_err:
+bkey_err:
bch2_quota_reservation_put(c, inode, "a_res);
bch2_disk_reservation_put(c, &disk_res);
if (ret == -EINTR)
return bch2_trans_iter_free(trans, iter) ?: sectors;
}
-static int remove_dirent(struct bch_fs *c, struct btree_iter *iter,
+static int remove_dirent(struct btree_trans *trans,
struct bkey_s_c_dirent dirent)
{
+ struct bch_fs *c = trans->c;
struct qstr name;
struct bch_inode_unpacked dir_inode;
struct bch_hash_info dir_hash_info;
buf[name.len] = '\0';
name.name = buf;
- /* Unlock iter so we don't deadlock, after copying name: */
- bch2_btree_iter_unlock(iter);
+ /* Unlock so we don't deadlock, after copying name: */
+ bch2_btree_trans_unlock(trans);
ret = bch2_inode_find_by_inum(c, dir_inum, &dir_inode);
if (ret) {
struct hash_check {
struct bch_hash_info info;
- struct btree_trans *trans;
/* start of current chain of hash collisions: */
struct btree_iter *chain;
/* next offset in current chain of hash collisions: */
- u64 next;
+ u64 chain_end;
};
-static void hash_check_init(const struct bch_hash_desc desc,
- struct btree_trans *trans,
+static void hash_check_init(struct hash_check *h)
+{
+ h->chain = NULL;
+}
+
+static void hash_stop_chain(struct btree_trans *trans,
struct hash_check *h)
{
- h->trans = trans;
- h->chain = bch2_trans_get_iter(trans, desc.btree_id, POS_MIN, 0);
- h->next = -1;
+ if (h->chain)
+ bch2_trans_iter_free(trans, h->chain);
+ h->chain = NULL;
}
-static void hash_check_set_inode(struct hash_check *h, struct bch_fs *c,
+static void hash_check_set_inode(struct btree_trans *trans,
+ struct hash_check *h,
const struct bch_inode_unpacked *bi)
{
- h->info = bch2_hash_info_init(c, bi);
- h->next = -1;
+ h->info = bch2_hash_info_init(trans->c, bi);
+ hash_stop_chain(trans, h);
}
static int hash_redo_key(const struct bch_hash_desc desc,
if (ret)
goto err;
- bch2_btree_iter_unlock(k_iter);
-
bch2_hash_set(trans, desc, &h->info, k_iter->pos.inode,
tmp, BCH_HASH_SET_MUST_CREATE);
ret = bch2_trans_commit(trans, NULL, NULL,
if (!bkey_cmp(h->chain->pos, k_iter->pos))
return 0;
- iter = bch2_trans_copy_iter(h->trans, h->chain);
+ iter = bch2_trans_copy_iter(trans, h->chain);
BUG_ON(IS_ERR(iter));
for_each_btree_key_continue(iter, 0, k2) {
}
}
fsck_err:
- bch2_trans_iter_free(h->trans, iter);
+ bch2_trans_iter_free(trans, iter);
return ret;
}
-static bool key_has_correct_hash(const struct bch_hash_desc desc,
- struct hash_check *h, struct bch_fs *c,
- struct btree_iter *k_iter, struct bkey_s_c k)
+static void hash_set_chain_start(struct btree_trans *trans,
+ const struct bch_hash_desc desc,
+ struct hash_check *h,
+ struct btree_iter *k_iter, struct bkey_s_c k)
{
- u64 hash;
+ bool hole = (k.k->type != KEY_TYPE_whiteout &&
+ k.k->type != desc.key_type);
- if (k.k->type != KEY_TYPE_whiteout &&
- k.k->type != desc.key_type)
- return true;
+ if (hole || k.k->p.offset > h->chain_end + 1)
+ hash_stop_chain(trans, h);
+
+ if (!hole) {
+ if (!h->chain) {
+ h->chain = bch2_trans_copy_iter(trans, k_iter);
+ BUG_ON(IS_ERR(h->chain));
+ }
+
+ h->chain_end = k.k->p.offset;
+ }
+}
+
+static bool key_has_correct_hash(struct btree_trans *trans,
+ const struct bch_hash_desc desc,
+ struct hash_check *h,
+ struct btree_iter *k_iter, struct bkey_s_c k)
+{
+ u64 hash;
- if (k.k->p.offset != h->next)
- bch2_btree_iter_copy(h->chain, k_iter);
- h->next = k.k->p.offset + 1;
+ hash_set_chain_start(trans, desc, h, k_iter, k);
if (k.k->type != desc.key_type)
return true;
u64 hashed;
int ret = 0;
- if (k.k->type != KEY_TYPE_whiteout &&
- k.k->type != desc.key_type)
- return 0;
-
- if (k.k->p.offset != h->next)
- bch2_btree_iter_copy(h->chain, k_iter);
- h->next = k.k->p.offset + 1;
+ hash_set_chain_start(trans, desc, h, k_iter, k);
if (k.k->type != desc.key_type)
return 0;
unsigned len;
u64 hash;
- if (key_has_correct_hash(bch2_dirent_hash_desc, h, c, iter, *k))
+ if (key_has_correct_hash(trans, bch2_dirent_hash_desc, h, iter, *k))
return 0;
len = bch2_dirent_name_bytes(bkey_s_c_to_dirent(*k));
iter = bch2_trans_get_iter(&trans, BTREE_ID_DIRENTS,
POS(BCACHEFS_ROOT_INO, 0), 0);
- hash_check_init(bch2_dirent_hash_desc, &trans, &h);
+ hash_check_init(&h);
for_each_btree_key_continue(iter, 0, k) {
struct bkey_s_c_dirent d;
}
if (w.first_this_inode && w.have_inode)
- hash_check_set_inode(&h, c, &w.inode);
+ hash_check_set_inode(&trans, &h, &w.inode);
ret = check_dirent_hash(&trans, &h, iter, &k);
if (ret > 0) {
".. dirent") ||
fsck_err_on(memchr(d.v->d_name, '/', name_len), c,
"dirent name has invalid chars")) {
- ret = remove_dirent(c, iter, d);
+ ret = remove_dirent(&trans, d);
if (ret)
goto err;
continue;
"dirent points to own directory:\n%s",
(bch2_bkey_val_to_text(&PBUF(buf), c,
k), buf))) {
- ret = remove_dirent(c, iter, d);
+ ret = remove_dirent(&trans, d);
if (ret)
goto err;
continue;
"dirent points to missing inode:\n%s",
(bch2_bkey_val_to_text(&PBUF(buf), c,
k), buf))) {
- ret = remove_dirent(c, iter, d);
+ ret = remove_dirent(&trans, d);
if (ret)
goto err;
continue;
}
}
+
+ hash_stop_chain(&trans, &h);
err:
fsck_err:
return bch2_trans_exit(&trans) ?: ret;
iter = bch2_trans_get_iter(&trans, BTREE_ID_XATTRS,
POS(BCACHEFS_ROOT_INO, 0), 0);
- hash_check_init(bch2_xattr_hash_desc, &trans, &h);
+ hash_check_init(&h);
for_each_btree_key_continue(iter, 0, k) {
ret = walk_inode(c, &w, k.k->p.inode);
}
if (w.first_this_inode && w.have_inode)
- hash_check_set_inode(&h, c, &w.inode);
+ hash_check_set_inode(&trans, &h, &w.inode);
ret = hash_check_key(&trans, bch2_xattr_hash_desc,
&h, iter, k);
if (fsck_err_on(inode_bitmap_test(&dirs_done, d_inum), c,
"directory %llu has multiple hardlinks",
d_inum)) {
- ret = remove_dirent(c, iter, dirent);
+ ret = remove_dirent(&trans, dirent);
if (ret)
goto err;
continue;
if (fsck_err_on(!inode_bitmap_test(&dirs_done, k.k->p.inode), c,
"unreachable directory found (inum %llu)",
k.k->p.inode)) {
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(&trans);
ret = reattach_inode(c, lostfound_inode, k.k->p.inode);
if (ret) {
int ret = 0;
ret = bch2_inode_unpack(inode, &u);
+
+ bch2_btree_trans_unlock(trans);
+
if (bch2_fs_inconsistent_on(ret, c,
"error unpacking inode %llu in fsck",
inode.k->p.inode))
nlinks_iter = genradix_iter_init(links, 0);
while ((k = bch2_btree_iter_peek(iter)).k &&
- !(ret2 = btree_iter_err(k))) {
+ !(ret2 = bkey_err(k))) {
peek_nlinks: link = genradix_iter_peek(&nlinks_iter, links);
if (!link && (!k.k || iter->pos.inode >= range_end))
link = &zero_links;
if (k.k && k.k->type == KEY_TYPE_inode) {
- /*
- * Avoid potential deadlocks with iter for
- * truncate/rm/etc.:
- */
- bch2_btree_iter_unlock(iter);
-
ret = check_inode(&trans, lostfound_inode, iter,
bkey_s_c_to_inode(k), link);
BUG_ON(ret == -EINTR);
struct btree_iter *iter;
struct bkey_s_c k;
struct bkey_s_c_inode inode;
- int ret = 0;
+ int ret = 0, ret2;
bch2_trans_init(&trans, c);
}
}
- if (!ret)
- ret = bch2_btree_iter_unlock(iter);
+ ret2 = bch2_trans_exit(&trans);
- bch2_trans_exit(&trans);
-
- return ret;
+ return ret ?: ret2;
}
/*
while (1) {
struct bkey_s_c k = bch2_btree_iter_peek_slot(iter);
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (ret)
return ret;
struct bkey_s_c k = bch2_btree_iter_peek_slot(iter);
u32 bi_generation = 0;
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (ret)
break;
rbio->bio.bi_status = 0;
k = bch2_btree_iter_peek_slot(iter);
- if (btree_iter_err(k))
+ if (bkey_err(k))
goto err;
bkey_reassemble(&tmp.k, k);
bkey_reassemble(&tmp.k, k);
k = bkey_i_to_s_c(&tmp.k);
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(&trans);
bytes = min_t(unsigned, bvec_iter.bi_size,
(k.k->p.offset - bvec_iter.bi_sector) << 9);
* If we get here, it better have been because there was an error
* reading a btree node
*/
- BUG_ON(!(iter->flags & BTREE_ITER_ERROR));
+ BUG_ON(!btree_iter_err(iter));
__bcache_io_error(c, "btree IO error");
err:
rbio->bio.bi_status = BLK_STS_IOERR;
*/
bkey_reassemble(&tmp.k, k);
k = bkey_i_to_s_c(&tmp.k);
- bch2_btree_iter_unlock(iter);
+ bch2_btree_trans_unlock(&trans);
bytes = min_t(unsigned, rbio->bio.bi_iter.bi_size,
(k.k->p.offset - rbio->bio.bi_iter.bi_sector) << 9);
* If we get here, it better have been because there was an error
* reading a btree node
*/
- BUG_ON(!(iter->flags & BTREE_ITER_ERROR));
+ BUG_ON(!btree_iter_err(iter));
bcache_io_error(c, &rbio->bio, "btree IO error");
bch2_trans_exit(&trans);
while ((k = bch2_btree_iter_peek(iter)).k &&
- !(ret = btree_iter_err(k))) {
+ !(ret = bkey_err(k))) {
if (!bkey_extent_is_data(k.k) ||
!bch2_extent_has_device(bkey_s_c_to_extent(k), dev_idx)) {
ret = bch2_mark_bkey_replicas(c, k);
bool did_work = false;
int nr;
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (ret)
break;
if (!k.k)
break;
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (ret)
break;
if (bkey_cmp(bkey_start_pos(k.k), end) >= 0)
BTREE_ITER_SLOTS|BTREE_ITER_INTENT);
k = bch2_btree_iter_peek_slot(iter);
- ret = btree_iter_err(k);
+ ret = bkey_err(k);
if (unlikely(ret))
return ret;
projects / linux-2.6-block.git / commitdiff