#include "journal.h"
#include "journal_reclaim.h"
#include "keylist.h"
+#include "recovery.h"
#include "replicas.h"
#include "super-io.h"
#include <linux/random.h>
#include <trace/events/bcachefs.h>
+static void bch2_btree_insert_node(struct btree_update *, struct btree_trans *,
+ struct btree_path *, struct btree *,
+ struct keylist *, unsigned);
+static void bch2_btree_update_add_new_node(struct btree_update *, struct btree *);
+
/* Debug code: */
/*
BUG_ON(!b->c.level);
- if (!test_bit(BCH_FS_BTREE_INTERIOR_REPLAY_DONE, &c->flags))
+ if (!test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags))
return;
bch2_btree_node_iter_init_from_start(&iter, b);
clear_btree_node_noevict(b);
- bch2_btree_node_hash_remove(&c->btree_cache, b);
-
mutex_lock(&c->btree_cache.lock);
list_move(&b->list, &c->btree_cache.freeable);
mutex_unlock(&c->btree_cache.lock);
}
-void bch2_btree_node_free_never_inserted(struct bch_fs *c, struct btree *b)
+static void bch2_btree_node_free_inmem(struct btree_trans *trans,
+ struct btree *b)
{
- struct open_buckets ob = b->ob;
+ struct bch_fs *c = trans->c;
+ struct btree_path *path;
- b->ob.nr = 0;
+ trans_for_each_path(trans, path)
+ BUG_ON(path->l[b->c.level].b == b &&
+ path->l[b->c.level].lock_seq == b->c.lock.state.seq);
- clear_btree_node_dirty(c, b);
+ six_lock_write(&b->c.lock, NULL, NULL);
- btree_node_lock_type(c, b, SIX_LOCK_write);
+ bch2_btree_node_hash_remove(&c->btree_cache, b);
__btree_node_free(c, b);
- six_unlock_write(&b->c.lock);
-
- bch2_open_buckets_put(c, &ob);
-}
-
-void bch2_btree_node_free_inmem(struct bch_fs *c, struct btree *b,
- struct btree_iter *iter)
-{
- struct btree_iter *linked;
- trans_for_each_iter(iter->trans, linked)
- BUG_ON(linked->l[b->c.level].b == b);
-
- six_lock_write(&b->c.lock, NULL, NULL);
- __btree_node_free(c, b);
six_unlock_write(&b->c.lock);
six_unlock_intent(&b->c.lock);
}
if (IS_ERR(wp))
return ERR_CAST(wp);
- if (wp->sectors_free < c->opts.btree_node_size) {
+ if (wp->sectors_free < btree_sectors(c)) {
struct open_bucket *ob;
unsigned i;
open_bucket_for_each(c, &wp->ptrs, ob, i)
- if (ob->sectors_free < c->opts.btree_node_size)
+ if (ob->sectors_free < btree_sectors(c))
ob->sectors_free = 0;
bch2_alloc_sectors_done(c, wp);
goto retry;
}
- if (c->sb.features & (1ULL << BCH_FEATURE_btree_ptr_v2))
- bkey_btree_ptr_v2_init(&tmp.k);
- else
- bkey_btree_ptr_init(&tmp.k);
-
- bch2_alloc_sectors_append_ptrs(c, wp, &tmp.k, c->opts.btree_node_size);
+ bkey_btree_ptr_v2_init(&tmp.k);
+ bch2_alloc_sectors_append_ptrs(c, wp, &tmp.k, btree_sectors(c), false);
bch2_open_bucket_get(c, wp, &ob);
bch2_alloc_sectors_done(c, wp);
struct btree *b = bch2_btree_node_alloc(as, level);
btree_set_min(b, POS_MIN);
- btree_set_max(b, POS_MAX);
+ btree_set_max(b, SPOS_MAX);
b->data->format = bch2_btree_calc_format(b);
btree_node_set_format(b, b->data->format);
bch2_disk_reservation_put(c, &as->disk_res);
bch2_btree_reserve_put(as);
+ bch2_time_stats_update(&c->times[BCH_TIME_btree_interior_update_total],
+ as->start_time);
+
mutex_lock(&c->btree_interior_update_lock);
list_del(&as->unwritten_list);
list_del(&as->list);
- mutex_unlock(&c->btree_interior_update_lock);
closure_debug_destroy(&as->cl);
mempool_free(as, &c->btree_interior_update_pool);
+ /*
+ * Have to do the wakeup with btree_interior_update_lock still held,
+ * since being on btree_interior_update_list is our ref on @c:
+ */
closure_wake_up(&c->btree_interior_update_wait);
+
+ mutex_unlock(&c->btree_interior_update_lock);
}
static void btree_update_will_delete_key(struct btree_update *as,
ret = bch2_trans_mark_key(trans,
bkey_s_c_null,
bkey_i_to_s_c(k),
- 0, 0, BTREE_TRIGGER_INSERT);
+ BTREE_TRIGGER_INSERT);
if (ret)
return ret;
}
ret = bch2_trans_mark_key(trans,
bkey_i_to_s_c(k),
bkey_s_c_null,
- 0, 0, BTREE_TRIGGER_OVERWRITE);
+ BTREE_TRIGGER_OVERWRITE);
if (ret)
return ret;
}
* on disk:
*/
for (i = 0; i < as->nr_old_nodes; i++) {
- struct btree_node *bn = READ_ONCE(as->old_nodes[i]->data);
+ struct btree *old = as->old_nodes[i];
+ __le64 seq;
- /*
- * This is technically a use after free, but it's just a read -
- * but it might cause problems in userspace where freeing the
- * buffer may unmap it:
- */
- if (bn && bn->keys.seq == as->old_nodes_seq[i])
- btree_node_wait_on_io(as->old_nodes[i]);
+ six_lock_read(&old->c.lock, NULL, NULL);
+ seq = old->data ? old->data->keys.seq : 0;
+ six_unlock_read(&old->c.lock);
+
+ if (seq == as->old_nodes_seq[i])
+ wait_on_bit_io(&old->flags, BTREE_NODE_write_in_flight_inner,
+ TASK_UNINTERRUPTIBLE);
}
/*
* And it adds @b to the list of @as's new nodes, so that we can update sector
* counts in bch2_btree_update_nodes_written:
*/
-void bch2_btree_update_add_new_node(struct btree_update *as, struct btree *b)
+static void bch2_btree_update_add_new_node(struct btree_update *as, struct btree *b)
{
struct bch_fs *c = as->c;
closure_put(&as->cl);
}
-void bch2_btree_update_get_open_buckets(struct btree_update *as, struct btree *b)
+static void bch2_btree_update_get_open_buckets(struct btree_update *as, struct btree *b)
{
while (b->ob.nr)
as->open_buckets[as->nr_open_buckets++] =
* nodes and thus outstanding btree_updates - redirect @b's
* btree_updates to point to this btree_update:
*/
-void bch2_btree_interior_update_will_free_node(struct btree_update *as,
+static void bch2_btree_interior_update_will_free_node(struct btree_update *as,
struct btree *b)
{
struct bch_fs *c = as->c;
as->nr_old_nodes++;
}
-void bch2_btree_update_done(struct btree_update *as)
+static void bch2_btree_update_done(struct btree_update *as)
{
+ struct bch_fs *c = as->c;
+ u64 start_time = as->start_time;
+
BUG_ON(as->mode == BTREE_INTERIOR_NO_UPDATE);
if (as->took_gc_lock)
continue_at(&as->cl, btree_update_set_nodes_written,
as->c->btree_interior_update_worker);
+
+ bch2_time_stats_update(&c->times[BCH_TIME_btree_interior_update_foreground],
+ start_time);
}
-struct btree_update *
-bch2_btree_update_start(struct btree_iter *iter, unsigned level,
- unsigned nr_nodes, unsigned flags)
+static struct btree_update *
+bch2_btree_update_start(struct btree_trans *trans, struct btree_path *path,
+ unsigned level, unsigned nr_nodes, unsigned flags)
{
- struct btree_trans *trans = iter->trans;
struct bch_fs *c = trans->c;
struct btree_update *as;
struct closure cl;
+ u64 start_time = local_clock();
int disk_res_flags = (flags & BTREE_INSERT_NOFAIL)
? BCH_DISK_RESERVATION_NOFAIL : 0;
int journal_flags = 0;
int ret = 0;
+ BUG_ON(!path->should_be_locked);
+
if (flags & BTREE_INSERT_JOURNAL_RESERVED)
journal_flags |= JOURNAL_RES_GET_RESERVED;
closure_init_stack(&cl);
retry:
- /*
- * This check isn't necessary for correctness - it's just to potentially
- * prevent us from doing a lot of work that'll end up being wasted:
- */
- ret = bch2_journal_error(&c->journal);
- if (ret)
- return ERR_PTR(ret);
/*
* XXX: figure out how far we might need to split,
* instead of locking/reserving all the way to the root:
*/
- if (!bch2_btree_iter_upgrade(iter, U8_MAX)) {
- trace_trans_restart_iter_upgrade(trans->ip);
- return ERR_PTR(-EINTR);
+ if (!bch2_btree_path_upgrade(trans, path, U8_MAX)) {
+ trace_trans_restart_iter_upgrade(trans->fn, _RET_IP_,
+ path->btree_id, &path->pos);
+ ret = btree_trans_restart(trans);
+ return ERR_PTR(ret);
}
if (flags & BTREE_INSERT_GC_LOCK_HELD)
lockdep_assert_held(&c->gc_lock);
else if (!down_read_trylock(&c->gc_lock)) {
- if (flags & BTREE_INSERT_NOUNLOCK)
- return ERR_PTR(-EINTR);
-
bch2_trans_unlock(trans);
down_read(&c->gc_lock);
if (!bch2_trans_relock(trans)) {
memset(as, 0, sizeof(*as));
closure_init(&as->cl, NULL);
as->c = c;
+ as->start_time = start_time;
as->mode = BTREE_INTERIOR_NO_UPDATE;
as->took_gc_lock = !(flags & BTREE_INSERT_GC_LOCK_HELD);
- as->btree_id = iter->btree_id;
+ as->btree_id = path->btree_id;
INIT_LIST_HEAD(&as->list);
INIT_LIST_HEAD(&as->unwritten_list);
INIT_LIST_HEAD(&as->write_blocked_list);
bch2_keylist_init(&as->new_keys, as->_new_keys);
bch2_keylist_init(&as->parent_keys, as->inline_keys);
+ mutex_lock(&c->btree_interior_update_lock);
+ list_add_tail(&as->list, &c->btree_interior_update_list);
+ mutex_unlock(&c->btree_interior_update_lock);
+
+ /*
+ * We don't want to allocate if we're in an error state, that can cause
+ * deadlock on emergency shutdown due to open buckets getting stuck in
+ * the btree_reserve_cache after allocator shutdown has cleared it out.
+ * This check needs to come after adding us to the btree_interior_update
+ * list but before calling bch2_btree_reserve_get, to synchronize with
+ * __bch2_fs_read_only().
+ */
+ ret = bch2_journal_error(&c->journal);
+ if (ret)
+ goto err;
+
ret = bch2_journal_preres_get(&c->journal, &as->journal_preres,
BTREE_UPDATE_JOURNAL_RES,
journal_flags|JOURNAL_RES_GET_NONBLOCK);
if (ret == -EAGAIN) {
- /*
- * this would be cleaner if bch2_journal_preres_get() took a
- * closure argument
- */
- if (flags & BTREE_INSERT_NOUNLOCK) {
- trace_trans_restart_journal_preres_get(trans->ip);
- ret = -EINTR;
- goto err;
- }
-
bch2_trans_unlock(trans);
if (flags & BTREE_INSERT_JOURNAL_RECLAIM) {
bch2_btree_update_free(as);
+ btree_trans_restart(trans);
return ERR_PTR(ret);
}
BTREE_UPDATE_JOURNAL_RES,
journal_flags);
if (ret) {
- trace_trans_restart_journal_preres_get(trans->ip);
+ trace_trans_restart_journal_preres_get(trans->fn, _RET_IP_);
goto err;
}
}
ret = bch2_disk_reservation_get(c, &as->disk_res,
- nr_nodes * c->opts.btree_node_size,
+ nr_nodes * btree_sectors(c),
c->opts.metadata_replicas,
disk_res_flags);
if (ret)
goto err;
- ret = bch2_btree_reserve_get(as, nr_nodes, flags,
- !(flags & BTREE_INSERT_NOUNLOCK) ? &cl : NULL);
+ ret = bch2_btree_reserve_get(as, nr_nodes, flags, &cl);
if (ret)
goto err;
atomic64_read(&c->journal.seq),
&as->journal, NULL);
- mutex_lock(&c->btree_interior_update_lock);
- list_add_tail(&as->list, &c->btree_interior_update_list);
- mutex_unlock(&c->btree_interior_update_lock);
-
return as;
err:
bch2_btree_update_free(as);
if (ret == -EAGAIN) {
- BUG_ON(flags & BTREE_INSERT_NOUNLOCK);
-
bch2_trans_unlock(trans);
closure_sync(&cl);
ret = -EINTR;
* is nothing new to be done. This just guarantees that there is a
* journal write.
*/
-static void bch2_btree_set_root(struct btree_update *as, struct btree *b,
- struct btree_iter *iter)
+static void bch2_btree_set_root(struct btree_update *as,
+ struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b)
{
struct bch_fs *c = as->c;
struct btree *old;
* Ensure no one is using the old root while we switch to the
* new root:
*/
- bch2_btree_node_lock_write(old, iter);
+ bch2_btree_node_lock_write(trans, path, old);
bch2_btree_set_root_inmem(c, b);
* an intent lock on the new root, and any updates that would
* depend on the new root would have to update the new root.
*/
- bch2_btree_node_unlock_write(old, iter);
+ bch2_btree_node_unlock_write(trans, path, old);
}
/* Interior node updates: */
-static void bch2_insert_fixup_btree_ptr(struct btree_update *as, struct btree *b,
- struct btree_iter *iter,
- struct bkey_i *insert,
- struct btree_node_iter *node_iter)
+static void bch2_insert_fixup_btree_ptr(struct btree_update *as,
+ struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b,
+ struct btree_node_iter *node_iter,
+ struct bkey_i *insert)
{
struct bch_fs *c = as->c;
struct bkey_packed *k;
const char *invalid;
+ BUG_ON(insert->k.type == KEY_TYPE_btree_ptr_v2 &&
+ !btree_ptr_sectors_written(insert));
+
+ if (unlikely(!test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags)))
+ bch2_journal_key_overwritten(c, b->c.btree_id, b->c.level, insert->k.p);
+
invalid = bch2_bkey_invalid(c, bkey_i_to_s_c(insert), btree_node_type(b)) ?:
bch2_bkey_in_btree_node(b, bkey_i_to_s_c(insert));
if (invalid) {
bkey_iter_pos_cmp(b, k, &insert->k.p) < 0)
bch2_btree_node_iter_advance(node_iter, b);
- bch2_btree_bset_insert_key(iter, b, node_iter, insert);
+ bch2_btree_bset_insert_key(trans, path, b, node_iter, insert);
set_btree_node_dirty(c, b);
set_btree_node_need_write(b);
}
static void
-__bch2_btree_insert_keys_interior(struct btree_update *as, struct btree *b,
- struct btree_iter *iter, struct keylist *keys,
- struct btree_node_iter node_iter)
+__bch2_btree_insert_keys_interior(struct btree_update *as,
+ struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b,
+ struct btree_node_iter node_iter,
+ struct keylist *keys)
{
struct bkey_i *insert = bch2_keylist_front(keys);
struct bkey_packed *k;
;
while (!bch2_keylist_empty(keys)) {
- bch2_insert_fixup_btree_ptr(as, b, iter,
- bch2_keylist_front(keys), &node_iter);
+ bch2_insert_fixup_btree_ptr(as, trans, path, b,
+ &node_iter, bch2_keylist_front(keys));
bch2_keylist_pop_front(keys);
}
}
* node)
*/
static struct btree *__btree_split_node(struct btree_update *as,
- struct btree *n1,
- struct btree_iter *iter)
+ struct btree *n1)
{
struct bkey_format_state s;
size_t nr_packed = 0, nr_unpacked = 0;
* nodes that were coalesced, and thus in the middle of a child node post
* coalescing:
*/
-static void btree_split_insert_keys(struct btree_update *as, struct btree *b,
- struct btree_iter *iter,
+static void btree_split_insert_keys(struct btree_update *as,
+ struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b,
struct keylist *keys)
{
struct btree_node_iter node_iter;
bch2_btree_node_iter_init(&node_iter, b, &k->k.p);
- __bch2_btree_insert_keys_interior(as, b, iter, keys, node_iter);
+ __bch2_btree_insert_keys_interior(as, trans, path, b, node_iter, keys);
/*
* We can't tolerate whiteouts here - with whiteouts there can be
btree_node_interior_verify(as->c, b);
}
-static void btree_split(struct btree_update *as, struct btree *b,
- struct btree_iter *iter, struct keylist *keys,
- unsigned flags)
+static void btree_split(struct btree_update *as, struct btree_trans *trans,
+ struct btree_path *path, struct btree *b,
+ struct keylist *keys, unsigned flags)
{
struct bch_fs *c = as->c;
- struct btree *parent = btree_node_parent(iter, b);
+ struct btree *parent = btree_node_parent(path, b);
struct btree *n1, *n2 = NULL, *n3 = NULL;
u64 start_time = local_clock();
BUG_ON(!parent && (b != btree_node_root(c, b)));
- BUG_ON(!btree_node_intent_locked(iter, btree_node_root(c, b)->c.level));
+ BUG_ON(!btree_node_intent_locked(path, btree_node_root(c, b)->c.level));
bch2_btree_interior_update_will_free_node(as, b);
bch2_btree_update_add_new_node(as, n1);
if (keys)
- btree_split_insert_keys(as, n1, iter, keys);
+ btree_split_insert_keys(as, trans, path, n1, keys);
if (bset_u64s(&n1->set[0]) > BTREE_SPLIT_THRESHOLD(c)) {
trace_btree_split(c, b);
- n2 = __btree_split_node(as, n1, iter);
+ n2 = __btree_split_node(as, n1);
bch2_btree_build_aux_trees(n2);
bch2_btree_build_aux_trees(n1);
six_unlock_write(&n2->c.lock);
six_unlock_write(&n1->c.lock);
+ bch2_btree_node_write(c, n1, SIX_LOCK_intent);
bch2_btree_node_write(c, n2, SIX_LOCK_intent);
/*
n3->sib_u64s[0] = U16_MAX;
n3->sib_u64s[1] = U16_MAX;
- btree_split_insert_keys(as, n3, iter, &as->parent_keys);
+ btree_split_insert_keys(as, trans, path, n3, &as->parent_keys);
bch2_btree_node_write(c, n3, SIX_LOCK_intent);
}
bch2_btree_build_aux_trees(n1);
six_unlock_write(&n1->c.lock);
+ bch2_btree_node_write(c, n1, SIX_LOCK_intent);
+
if (parent)
bch2_keylist_add(&as->parent_keys, &n1->key);
}
- bch2_btree_node_write(c, n1, SIX_LOCK_intent);
-
/* New nodes all written, now make them visible: */
if (parent) {
/* Split a non root node */
- bch2_btree_insert_node(as, parent, iter, &as->parent_keys, flags);
+ bch2_btree_insert_node(as, trans, path, parent, &as->parent_keys, flags);
} else if (n3) {
- bch2_btree_set_root(as, n3, iter);
+ bch2_btree_set_root(as, trans, path, n3);
} else {
/* Root filled up but didn't need to be split */
- bch2_btree_set_root(as, n1, iter);
+ bch2_btree_set_root(as, trans, path, n1);
}
bch2_btree_update_get_open_buckets(as, n1);
if (n3)
bch2_btree_update_get_open_buckets(as, n3);
- /* Successful split, update the iterator to point to the new nodes: */
+ /* Successful split, update the path to point to the new nodes: */
six_lock_increment(&b->c.lock, SIX_LOCK_intent);
- bch2_btree_iter_node_drop(iter, b);
if (n3)
- bch2_btree_iter_node_replace(iter, n3);
+ bch2_trans_node_add(trans, n3);
if (n2)
- bch2_btree_iter_node_replace(iter, n2);
- bch2_btree_iter_node_replace(iter, n1);
+ bch2_trans_node_add(trans, n2);
+ bch2_trans_node_add(trans, n1);
/*
* The old node must be freed (in memory) _before_ unlocking the new
* node after another thread has locked and updated the new node, thus
* seeing stale data:
*/
- bch2_btree_node_free_inmem(c, b, iter);
+ bch2_btree_node_free_inmem(trans, b);
if (n3)
six_unlock_intent(&n3->c.lock);
six_unlock_intent(&n2->c.lock);
six_unlock_intent(&n1->c.lock);
- bch2_btree_trans_verify_locks(iter->trans);
+ bch2_trans_verify_locks(trans);
- bch2_time_stats_update(&c->times[BCH_TIME_btree_node_split],
+ bch2_time_stats_update(&c->times[n2
+ ? BCH_TIME_btree_node_split
+ : BCH_TIME_btree_node_compact],
start_time);
}
static void
-bch2_btree_insert_keys_interior(struct btree_update *as, struct btree *b,
- struct btree_iter *iter, struct keylist *keys)
+bch2_btree_insert_keys_interior(struct btree_update *as,
+ struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b,
+ struct keylist *keys)
{
- struct btree_iter *linked;
+ struct btree_path *linked;
- __bch2_btree_insert_keys_interior(as, b, iter, keys, iter->l[b->c.level].iter);
+ __bch2_btree_insert_keys_interior(as, trans, path, b,
+ path->l[b->c.level].iter, keys);
btree_update_updated_node(as, b);
- trans_for_each_iter_with_node(iter->trans, b, linked)
+ trans_for_each_path_with_node(trans, b, linked)
bch2_btree_node_iter_peek(&linked->l[b->c.level].iter, b);
- bch2_btree_trans_verify_iters(iter->trans, b);
+ bch2_trans_verify_paths(trans);
}
/**
* If a split occurred, this function will return early. This can only happen
* for leaf nodes -- inserts into interior nodes have to be atomic.
*/
-void bch2_btree_insert_node(struct btree_update *as, struct btree *b,
- struct btree_iter *iter, struct keylist *keys,
- unsigned flags)
+static void bch2_btree_insert_node(struct btree_update *as, struct btree_trans *trans,
+ struct btree_path *path, struct btree *b,
+ struct keylist *keys, unsigned flags)
{
struct bch_fs *c = as->c;
int old_u64s = le16_to_cpu(btree_bset_last(b)->u64s);
int live_u64s_added, u64s_added;
lockdep_assert_held(&c->gc_lock);
- BUG_ON(!btree_node_intent_locked(iter, btree_node_root(c, b)->c.level));
+ BUG_ON(!btree_node_intent_locked(path, btree_node_root(c, b)->c.level));
BUG_ON(!b->c.level);
BUG_ON(!as || as->b);
bch2_verify_keylist_sorted(keys);
- bch2_btree_node_lock_for_insert(c, b, iter);
+ bch2_btree_node_lock_for_insert(trans, path, b);
if (!bch2_btree_node_insert_fits(c, b, bch2_keylist_u64s(keys))) {
- bch2_btree_node_unlock_write(b, iter);
+ bch2_btree_node_unlock_write(trans, path, b);
goto split;
}
btree_node_interior_verify(c, b);
- bch2_btree_insert_keys_interior(as, b, iter, keys);
+ bch2_btree_insert_keys_interior(as, trans, path, b, keys);
live_u64s_added = (int) b->nr.live_u64s - old_live_u64s;
u64s_added = (int) le16_to_cpu(btree_bset_last(b)->u64s) - old_u64s;
if (u64s_added > live_u64s_added &&
bch2_maybe_compact_whiteouts(c, b))
- bch2_btree_iter_reinit_node(iter, b);
+ bch2_trans_node_reinit_iter(trans, b);
- bch2_btree_node_unlock_write(b, iter);
+ bch2_btree_node_unlock_write(trans, path, b);
btree_node_interior_verify(c, b);
return;
split:
- btree_split(as, b, iter, keys, flags);
+ btree_split(as, trans, path, b, keys, flags);
}
-int bch2_btree_split_leaf(struct bch_fs *c, struct btree_iter *iter,
+int bch2_btree_split_leaf(struct btree_trans *trans,
+ struct btree_path *path,
unsigned flags)
{
- struct btree *b = iter_l(iter)->b;
+ struct bch_fs *c = trans->c;
+ struct btree *b = path_l(path)->b;
struct btree_update *as;
unsigned l;
int ret = 0;
- as = bch2_btree_update_start(iter, iter->level,
+ as = bch2_btree_update_start(trans, path, path->level,
btree_update_reserve_required(c, b), flags);
if (IS_ERR(as))
return PTR_ERR(as);
- btree_split(as, b, iter, NULL, flags);
+ btree_split(as, trans, path, b, NULL, flags);
bch2_btree_update_done(as);
- for (l = iter->level + 1; btree_iter_node(iter, l) && !ret; l++)
- ret = bch2_foreground_maybe_merge(c, iter, l, flags);
+ for (l = path->level + 1; btree_path_node(path, l) && !ret; l++)
+ ret = bch2_foreground_maybe_merge(trans, path, l, flags);
return ret;
}
-int __bch2_foreground_maybe_merge(struct bch_fs *c,
- struct btree_iter *iter,
+int __bch2_foreground_maybe_merge(struct btree_trans *trans,
+ struct btree_path *path,
unsigned level,
unsigned flags,
enum btree_node_sibling sib)
{
- struct btree_trans *trans = iter->trans;
- struct btree_iter *sib_iter = NULL;
+ struct bch_fs *c = trans->c;
+ struct btree_path *sib_path = NULL;
struct btree_update *as;
struct bkey_format_state new_s;
struct bkey_format new_f;
struct btree *b, *m, *n, *prev, *next, *parent;
struct bpos sib_pos;
size_t sib_u64s;
- int ret = 0, ret2 = 0;
-
- BUG_ON(!btree_node_locked(iter, level));
-retry:
- ret = bch2_btree_iter_traverse(iter);
- if (ret)
- goto err;
+ u64 start_time = local_clock();
+ int ret = 0;
- BUG_ON(!btree_node_locked(iter, level));
+ BUG_ON(!path->should_be_locked);
+ BUG_ON(!btree_node_locked(path, level));
- b = iter->l[level].b;
+ b = path->l[level].b;
if ((sib == btree_prev_sib && !bpos_cmp(b->data->min_key, POS_MIN)) ||
- (sib == btree_next_sib && !bpos_cmp(b->data->max_key, POS_MAX))) {
+ (sib == btree_next_sib && !bpos_cmp(b->data->max_key, SPOS_MAX))) {
b->sib_u64s[sib] = U16_MAX;
- goto out;
+ return 0;
}
sib_pos = sib == btree_prev_sib
? bpos_predecessor(b->data->min_key)
: bpos_successor(b->data->max_key);
- sib_iter = bch2_trans_get_node_iter(trans, iter->btree_id,
- sib_pos, U8_MAX, level,
- BTREE_ITER_INTENT);
- ret = bch2_btree_iter_traverse(sib_iter);
+ sib_path = bch2_path_get(trans, path->btree_id, sib_pos,
+ U8_MAX, level, BTREE_ITER_INTENT, _THIS_IP_);
+ ret = bch2_btree_path_traverse(trans, sib_path, false);
if (ret)
goto err;
- m = sib_iter->l[level].b;
+ sib_path->should_be_locked = true;
+
+ m = sib_path->l[level].b;
- if (btree_node_parent(iter, b) !=
- btree_node_parent(sib_iter, m)) {
+ if (btree_node_parent(path, b) !=
+ btree_node_parent(sib_path, m)) {
b->sib_u64s[sib] = U16_MAX;
goto out;
}
if (b->sib_u64s[sib] > c->btree_foreground_merge_threshold)
goto out;
- parent = btree_node_parent(iter, b);
- as = bch2_btree_update_start(iter, level,
+ parent = btree_node_parent(path, b);
+ as = bch2_btree_update_start(trans, path, level,
btree_update_reserve_required(c, parent) + 1,
flags|
BTREE_INSERT_NOFAIL|
bch2_btree_build_aux_trees(n);
six_unlock_write(&n->c.lock);
+ bch2_btree_node_write(c, n, SIX_LOCK_intent);
+
bkey_init(&delete.k);
delete.k.p = prev->key.k.p;
bch2_keylist_add(&as->parent_keys, &delete);
bch2_keylist_add(&as->parent_keys, &n->key);
- bch2_btree_node_write(c, n, SIX_LOCK_intent);
+ bch2_trans_verify_paths(trans);
+
+ bch2_btree_insert_node(as, trans, path, parent, &as->parent_keys, flags);
- bch2_btree_insert_node(as, parent, iter, &as->parent_keys, flags);
+ bch2_trans_verify_paths(trans);
bch2_btree_update_get_open_buckets(as, n);
six_lock_increment(&b->c.lock, SIX_LOCK_intent);
six_lock_increment(&m->c.lock, SIX_LOCK_intent);
- bch2_btree_iter_node_drop(iter, b);
- bch2_btree_iter_node_drop(iter, m);
- bch2_btree_iter_node_replace(iter, n);
+ bch2_trans_node_add(trans, n);
- bch2_btree_trans_verify_iters(trans, n);
+ bch2_trans_verify_paths(trans);
- bch2_btree_node_free_inmem(c, b, iter);
- bch2_btree_node_free_inmem(c, m, iter);
+ bch2_btree_node_free_inmem(trans, b);
+ bch2_btree_node_free_inmem(trans, m);
six_unlock_intent(&n->c.lock);
bch2_btree_update_done(as);
-out:
- bch2_btree_trans_verify_locks(trans);
- bch2_trans_iter_free(trans, sib_iter);
- /*
- * Don't downgrade locks here: we're called after successful insert,
- * and the caller will downgrade locks after a successful insert
- * anyways (in case e.g. a split was required first)
- *
- * And we're also called when inserting into interior nodes in the
- * split path, and downgrading to read locks in there is potentially
- * confusing:
- */
- return ret ?: ret2;
+ bch2_time_stats_update(&c->times[BCH_TIME_btree_node_merge], start_time);
+out:
err:
- bch2_trans_iter_put(trans, sib_iter);
- sib_iter = NULL;
-
- if (ret == -EINTR && bch2_trans_relock(trans))
- goto retry;
-
- if (ret == -EINTR && !(flags & BTREE_INSERT_NOUNLOCK)) {
- ret2 = ret;
- ret = bch2_btree_iter_traverse_all(trans);
- if (!ret)
- goto retry;
- }
-
- goto out;
+ bch2_path_put(trans, sib_path, true);
+ bch2_trans_verify_locks(trans);
+ return ret;
}
/**
* bch_btree_node_rewrite - Rewrite/move a btree node
*/
-int bch2_btree_node_rewrite(struct bch_fs *c, struct btree_iter *iter,
- __le64 seq, unsigned flags)
+int bch2_btree_node_rewrite(struct btree_trans *trans,
+ struct btree_iter *iter,
+ struct btree *b,
+ unsigned flags)
{
- struct btree *b, *n, *parent;
+ struct bch_fs *c = trans->c;
+ struct btree *n, *parent;
struct btree_update *as;
int ret;
flags |= BTREE_INSERT_NOFAIL;
-retry:
- ret = bch2_btree_iter_traverse(iter);
- if (ret)
- goto out;
-
- b = bch2_btree_iter_peek_node(iter);
- if (!b || b->data->keys.seq != seq)
- goto out;
- parent = btree_node_parent(iter, b);
- as = bch2_btree_update_start(iter, b->c.level,
+ parent = btree_node_parent(iter->path, b);
+ as = bch2_btree_update_start(trans, iter->path, b->c.level,
(parent
? btree_update_reserve_required(c, parent)
: 0) + 1,
flags);
ret = PTR_ERR_OR_ZERO(as);
- if (ret == -EINTR)
- goto retry;
if (ret) {
trace_btree_gc_rewrite_node_fail(c, b);
goto out;
if (parent) {
bch2_keylist_add(&as->parent_keys, &n->key);
- bch2_btree_insert_node(as, parent, iter, &as->parent_keys, flags);
+ bch2_btree_insert_node(as, trans, iter->path, parent,
+ &as->parent_keys, flags);
} else {
- bch2_btree_set_root(as, n, iter);
+ bch2_btree_set_root(as, trans, iter->path, n);
}
bch2_btree_update_get_open_buckets(as, n);
six_lock_increment(&b->c.lock, SIX_LOCK_intent);
- bch2_btree_iter_node_drop(iter, b);
- bch2_btree_iter_node_replace(iter, n);
- bch2_btree_node_free_inmem(c, b, iter);
+ bch2_trans_node_add(trans, n);
+ bch2_btree_node_free_inmem(trans, b);
six_unlock_intent(&n->c.lock);
bch2_btree_update_done(as);
out:
- bch2_btree_iter_downgrade(iter);
+ bch2_btree_path_downgrade(iter->path);
return ret;
}
__le64 seq;
};
+static int async_btree_node_rewrite_trans(struct btree_trans *trans,
+ struct async_btree_rewrite *a)
+{
+ struct btree_iter iter;
+ struct btree *b;
+ int ret;
+
+ bch2_trans_node_iter_init(trans, &iter, a->btree_id, a->pos,
+ BTREE_MAX_DEPTH, a->level, 0);
+ b = bch2_btree_iter_peek_node(&iter);
+ ret = PTR_ERR_OR_ZERO(b);
+ if (ret)
+ goto out;
+
+ if (!b || b->data->keys.seq != a->seq)
+ goto out;
+
+ ret = bch2_btree_node_rewrite(trans, &iter, b, 0);
+out :
+ bch2_trans_iter_exit(trans, &iter);
+
+ return ret;
+}
+
void async_btree_node_rewrite_work(struct work_struct *work)
{
struct async_btree_rewrite *a =
container_of(work, struct async_btree_rewrite, work);
struct bch_fs *c = a->c;
- struct btree_trans trans;
- struct btree_iter *iter;
- bch2_trans_init(&trans, c, 0, 0);
- iter = bch2_trans_get_node_iter(&trans, a->btree_id, a->pos,
- BTREE_MAX_DEPTH, a->level, 0);
- bch2_btree_node_rewrite(c, iter, a->seq, 0);
- bch2_trans_iter_put(&trans, iter);
- bch2_trans_exit(&trans);
+ bch2_trans_do(c, NULL, NULL, 0,
+ async_btree_node_rewrite_trans(&trans, a));
percpu_ref_put(&c->writes);
kfree(a);
}
{
struct async_btree_rewrite *a;
- if (!test_bit(BCH_FS_BTREE_INTERIOR_REPLAY_DONE, &c->flags))
- return;
-
if (!percpu_ref_tryget(&c->writes))
return;
queue_work(c->btree_interior_update_worker, &a->work);
}
-static void __bch2_btree_node_update_key(struct bch_fs *c,
- struct btree_update *as,
- struct btree_iter *iter,
- struct btree *b, struct btree *new_hash,
- struct bkey_i *new_key)
+static int __bch2_btree_node_update_key(struct btree_trans *trans,
+ struct btree_iter *iter,
+ struct btree *b, struct btree *new_hash,
+ struct bkey_i *new_key,
+ bool skip_triggers)
{
+ struct bch_fs *c = trans->c;
+ struct btree_iter iter2 = { NULL };
struct btree *parent;
+ u64 journal_entries[BKEY_BTREE_PTR_U64s_MAX];
int ret;
- btree_update_will_delete_key(as, &b->key);
- btree_update_will_add_key(as, new_key);
+ if (!skip_triggers) {
+ ret = bch2_trans_mark_key(trans,
+ bkey_s_c_null,
+ bkey_i_to_s_c(new_key),
+ BTREE_TRIGGER_INSERT);
+ if (ret)
+ return ret;
- parent = btree_node_parent(iter, b);
+ ret = bch2_trans_mark_key(trans,
+ bkey_i_to_s_c(&b->key),
+ bkey_s_c_null,
+ BTREE_TRIGGER_OVERWRITE);
+ if (ret)
+ return ret;
+ }
+
+ if (new_hash) {
+ bkey_copy(&new_hash->key, new_key);
+ ret = bch2_btree_node_hash_insert(&c->btree_cache,
+ new_hash, b->c.level, b->c.btree_id);
+ BUG_ON(ret);
+ }
+
+ parent = btree_node_parent(iter->path, b);
if (parent) {
- if (new_hash) {
- bkey_copy(&new_hash->key, new_key);
- ret = bch2_btree_node_hash_insert(&c->btree_cache,
- new_hash, b->c.level, b->c.btree_id);
- BUG_ON(ret);
- }
+ bch2_trans_copy_iter(&iter2, iter);
- bch2_keylist_add(&as->parent_keys, new_key);
- bch2_btree_insert_node(as, parent, iter, &as->parent_keys, 0);
+ iter2.path = bch2_btree_path_make_mut(trans, iter2.path,
+ iter2.flags & BTREE_ITER_INTENT,
+ _THIS_IP_);
- if (new_hash) {
- mutex_lock(&c->btree_cache.lock);
- bch2_btree_node_hash_remove(&c->btree_cache, new_hash);
+ BUG_ON(iter2.path->level != b->c.level);
+ BUG_ON(bpos_cmp(iter2.path->pos, new_key->k.p));
- bch2_btree_node_hash_remove(&c->btree_cache, b);
+ btree_node_unlock(iter2.path, iter2.path->level);
+ path_l(iter2.path)->b = BTREE_ITER_NO_NODE_UP;
+ iter2.path->level++;
- bkey_copy(&b->key, new_key);
- ret = __bch2_btree_node_hash_insert(&c->btree_cache, b);
- BUG_ON(ret);
- mutex_unlock(&c->btree_cache.lock);
- } else {
- bkey_copy(&b->key, new_key);
- }
+ ret = bch2_btree_iter_traverse(&iter2) ?:
+ bch2_trans_update(trans, &iter2, new_key, BTREE_TRIGGER_NORUN);
+ if (ret)
+ goto err;
} else {
BUG_ON(btree_node_root(c, b) != b);
- bch2_btree_node_lock_write(b, iter);
- bkey_copy(&b->key, new_key);
+ trans->extra_journal_entries = (void *) &journal_entries[0];
+ trans->extra_journal_entry_u64s =
+ journal_entry_set((void *) &journal_entries[0],
+ BCH_JSET_ENTRY_btree_root,
+ b->c.btree_id, b->c.level,
+ new_key, new_key->k.u64s);
+ }
+
+ ret = bch2_trans_commit(trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_NOCHECK_RW|
+ BTREE_INSERT_JOURNAL_RECLAIM|
+ BTREE_INSERT_JOURNAL_RESERVED);
+ if (ret)
+ goto err;
- if (btree_ptr_hash_val(&b->key) != b->hash_val) {
- mutex_lock(&c->btree_cache.lock);
- bch2_btree_node_hash_remove(&c->btree_cache, b);
+ bch2_btree_node_lock_write(trans, iter->path, b);
- ret = __bch2_btree_node_hash_insert(&c->btree_cache, b);
- BUG_ON(ret);
- mutex_unlock(&c->btree_cache.lock);
- }
+ if (new_hash) {
+ mutex_lock(&c->btree_cache.lock);
+ bch2_btree_node_hash_remove(&c->btree_cache, new_hash);
+ bch2_btree_node_hash_remove(&c->btree_cache, b);
- btree_update_updated_root(as, b);
- bch2_btree_node_unlock_write(b, iter);
+ bkey_copy(&b->key, new_key);
+ ret = __bch2_btree_node_hash_insert(&c->btree_cache, b);
+ BUG_ON(ret);
+ mutex_unlock(&c->btree_cache.lock);
+ } else {
+ bkey_copy(&b->key, new_key);
}
- bch2_btree_update_done(as);
+ bch2_btree_node_unlock_write(trans, iter->path, b);
+out:
+ bch2_trans_iter_exit(trans, &iter2);
+ return ret;
+err:
+ if (new_hash) {
+ mutex_lock(&c->btree_cache.lock);
+ bch2_btree_node_hash_remove(&c->btree_cache, b);
+ mutex_unlock(&c->btree_cache.lock);
+ }
+ goto out;
}
-int bch2_btree_node_update_key(struct bch_fs *c, struct btree_iter *iter,
- struct btree *b,
- struct bkey_i *new_key)
+int bch2_btree_node_update_key(struct btree_trans *trans, struct btree_iter *iter,
+ struct btree *b, struct bkey_i *new_key,
+ bool skip_triggers)
{
- struct btree *parent = btree_node_parent(iter, b);
- struct btree_update *as = NULL;
+ struct bch_fs *c = trans->c;
struct btree *new_hash = NULL;
+ struct btree_path *path = iter->path;
struct closure cl;
int ret = 0;
+ if (!btree_node_intent_locked(path, b->c.level) &&
+ !bch2_btree_path_upgrade(trans, path, b->c.level + 1)) {
+ btree_trans_restart(trans);
+ return -EINTR;
+ }
+
closure_init_stack(&cl);
/*
if (btree_ptr_hash_val(new_key) != b->hash_val) {
ret = bch2_btree_cache_cannibalize_lock(c, &cl);
if (ret) {
- bch2_trans_unlock(iter->trans);
+ bch2_trans_unlock(trans);
closure_sync(&cl);
- if (!bch2_trans_relock(iter->trans))
+ if (!bch2_trans_relock(trans))
return -EINTR;
}
new_hash = bch2_btree_node_mem_alloc(c);
}
- as = bch2_btree_update_start(iter, b->c.level,
- parent ? btree_update_reserve_required(c, parent) : 0,
- BTREE_INSERT_NOFAIL);
- if (IS_ERR(as)) {
- ret = PTR_ERR(as);
- goto err;
- }
+ path->intent_ref++;
+ ret = __bch2_btree_node_update_key(trans, iter, b, new_hash,
+ new_key, skip_triggers);
+ --path->intent_ref;
- __bch2_btree_node_update_key(c, as, iter, b, new_hash, new_key);
-
- bch2_btree_iter_downgrade(iter);
-err:
if (new_hash) {
mutex_lock(&c->btree_cache.lock);
list_move(&new_hash->list, &c->btree_cache.freeable);
return ret;
}
+int bch2_btree_node_update_key_get_iter(struct btree_trans *trans,
+ struct btree *b, struct bkey_i *new_key,
+ bool skip_triggers)
+{
+ struct btree_iter iter;
+ int ret;
+
+ bch2_trans_node_iter_init(trans, &iter, b->c.btree_id, b->key.k.p,
+ BTREE_MAX_DEPTH, b->c.level,
+ BTREE_ITER_INTENT);
+ ret = bch2_btree_iter_traverse(&iter);
+ if (ret)
+ goto out;
+
+ /* has node been freed? */
+ if (iter.path->l[b->c.level].b != b) {
+ /* node has been freed: */
+ BUG_ON(!btree_node_dying(b));
+ goto out;
+ }
+
+ BUG_ON(!btree_node_hashed(b));
+
+ ret = bch2_btree_node_update_key(trans, &iter, b, new_key, skip_triggers);
+out:
+ bch2_trans_iter_exit(trans, &iter);
+ return ret;
+}
+
/* Init code: */
/*
b->c.btree_id = id;
bkey_btree_ptr_init(&b->key);
- b->key.k.p = POS_MAX;
+ b->key.k.p = SPOS_MAX;
*((u64 *) bkey_i_to_btree_ptr(&b->key)->v.start) = U64_MAX - id;
bch2_bset_init_first(b, &b->data->keys);
b->data->flags = 0;
btree_set_min(b, POS_MIN);
- btree_set_max(b, POS_MAX);
+ btree_set_max(b, SPOS_MAX);
b->data->format = bch2_btree_calc_format(b);
btree_node_set_format(b, b->data->format);
projects / bcachefs-tools-debian / blobdiff