#include <linux/sort.h>
static inline bool same_leaf_as_prev(struct btree_trans *trans,
- unsigned sorted_idx)
+ unsigned idx)
{
- struct btree_insert_entry *i = trans->updates +
- trans->updates_sorted[sorted_idx];
- struct btree_insert_entry *prev = sorted_idx
- ? trans->updates + trans->updates_sorted[sorted_idx - 1]
- : NULL;
-
- return prev &&
- i->iter->l[0].b == prev->iter->l[0].b;
+ return idx &&
+ trans->updates[trans->updates_sorted[idx]].iter->l[0].b ==
+ trans->updates[trans->updates_sorted[idx - 1]].iter->l[0].b;
}
#define trans_for_each_update_sorted(_trans, _i, _iter) \
trans->updates_sorted[pos] = l - trans->updates;
nr++;
}
-
- BUG_ON(nr != trans->nr_updates);
}
/* Inserting into a given leaf node (last stage of insert): */
EBUG_ON(insert->k->k.u64s >
bch_btree_keys_u64s_remaining(trans->c, l->b));
- if (bch2_btree_bset_insert_key(iter, l->b, &l->iter,
- insert->k))
+ if (likely(bch2_btree_bset_insert_key(iter, l->b, &l->iter,
+ insert->k)))
bch2_btree_journal_key(trans, iter, insert->k);
}
struct bch_fs *c = trans->c;
struct btree_iter *iter = insert->iter;
struct btree *b = iter->l[0].b;
- int old_u64s = le16_to_cpu(btree_bset_last(b)->u64s);
+ struct bset_tree *t = bset_tree_last(b);
+ int old_u64s = bset_u64s(t);
int old_live_u64s = b->nr.live_u64s;
int live_u64s_added, u64s_added;
bch2_insert_fixup_extent(trans, insert);
live_u64s_added = (int) b->nr.live_u64s - old_live_u64s;
- u64s_added = (int) le16_to_cpu(btree_bset_last(b)->u64s) - old_u64s;
+ u64s_added = (int) bset_u64s(t) - old_u64s;
if (b->sib_u64s[0] != U16_MAX && live_u64s_added < 0)
b->sib_u64s[0] = max(0, (int) b->sib_u64s[0] + live_u64s_added);
bch2_bkey_invalid(c, bkey_i_to_s_c(i->k), i->iter->btree_id));
}
-static int bch2_trans_journal_preres_get(struct btree_trans *trans)
+static noinline int
+bch2_trans_journal_preres_get_cold(struct btree_trans *trans, unsigned u64s)
{
struct bch_fs *c = trans->c;
- struct btree_insert_entry *i;
- unsigned u64s = 0;
int ret;
- trans_for_each_update(trans, i)
- if (0)
- u64s += jset_u64s(i->k->k.u64s);
-
- if (!u64s)
- return 0;
-
- ret = bch2_journal_preres_get(&c->journal,
- &trans->journal_preres, u64s,
- JOURNAL_RES_GET_NONBLOCK);
- if (ret != -EAGAIN)
- return ret;
-
bch2_trans_unlock(trans);
ret = bch2_journal_preres_get(&c->journal,
return 0;
}
-static int bch2_trans_journal_res_get(struct btree_trans *trans,
- unsigned flags)
+static inline int bch2_trans_journal_res_get(struct btree_trans *trans,
+ unsigned flags)
{
struct bch_fs *c = trans->c;
int ret;
(1U << i->iter->btree_id);
}
-/*
- * Get journal reservation, take write locks, and attempt to do btree update(s):
- */
-static inline int do_btree_insert_at(struct btree_trans *trans,
- struct btree_insert_entry **stopped_at)
+static noinline void bch2_btree_iter_unlock_noinline(struct btree_iter *iter)
+{
+ __bch2_btree_iter_unlock(iter);
+}
+
+static noinline void bch2_trans_mark_gc(struct btree_trans *trans)
{
struct bch_fs *c = trans->c;
- struct bch_fs_usage_online *fs_usage = NULL;
struct btree_insert_entry *i;
- struct btree_iter *iter;
unsigned mark_flags = trans->flags & BTREE_INSERT_BUCKET_INVALIDATE
? BCH_BUCKET_MARK_BUCKET_INVALIDATE
: 0;
- int ret;
- trans_for_each_update(trans, i)
- BUG_ON(i->iter->uptodate >= BTREE_ITER_NEED_RELOCK);
+ if (unlikely(trans->flags & BTREE_INSERT_NOMARK))
+ return;
- /*
- * note: running triggers will append more updates to the list of
- * updates as we're walking it:
- */
trans_for_each_update(trans, i)
- if (likely(!(trans->flags & BTREE_INSERT_NOMARK)) &&
- update_has_trans_triggers(i)) {
- ret = bch2_trans_mark_update(trans, i->iter, i->k);
- if (ret == -EINTR)
- trace_trans_restart_mark(trans->ip);
- if (ret)
- goto out_clear_replicas;
- }
-
- trans_for_each_iter(trans, iter) {
- if (iter->nodes_locked != iter->nodes_intent_locked) {
- BUG_ON(iter->flags & BTREE_ITER_KEEP_UNTIL_COMMIT);
- BUG_ON(trans->iters_live & (1ULL << iter->idx));
- __bch2_btree_iter_unlock(iter);
- }
- }
-
- if (IS_ENABLED(CONFIG_BCACHEFS_DEBUG))
- trans_for_each_update(trans, i)
- btree_insert_entry_checks(trans, i);
- bch2_btree_trans_verify_locks(trans);
-
- /*
- * No more updates can be added - sort updates so we can take write
- * locks in the correct order:
- */
- btree_trans_sort_updates(trans);
+ if (gc_visited(c, gc_pos_btree_node(i->iter->l[0].b)))
+ bch2_mark_update(trans, i, NULL,
+ mark_flags|BCH_BUCKET_MARK_GC);
+}
- btree_trans_lock_write(trans, true);
+static inline int
+bch2_trans_commit_write_locked(struct btree_trans *trans,
+ struct btree_insert_entry **stopped_at)
+{
+ struct bch_fs *c = trans->c;
+ struct bch_fs_usage_online *fs_usage = NULL;
+ struct btree_insert_entry *i;
+ unsigned mark_flags = trans->flags & BTREE_INSERT_BUCKET_INVALIDATE
+ ? BCH_BUCKET_MARK_BUCKET_INVALIDATE
+ : 0;
+ int ret;
if (race_fault()) {
- ret = -EINTR;
trace_trans_restart_fault_inject(trans->ip);
- goto out;
+ return -EINTR;
}
/*
*/
ret = btree_trans_check_can_insert(trans, stopped_at);
if (ret)
- goto out;
+ return ret;
trans_for_each_update(trans, i) {
if (!btree_node_type_needs_gc(i->iter->btree_id))
fs_usage = bch2_fs_usage_scratch_get(c);
}
+ /* Must be called under mark_lock: */
if (!bch2_bkey_replicas_marked_locked(c,
bkey_i_to_s_c(i->k), true)) {
ret = BTREE_INSERT_NEED_MARK_REPLICAS;
- goto out;
+ goto err;
}
}
* succeed:
*/
if (likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY))) {
- trans->journal_u64s = 0;
-
- trans_for_each_update(trans, i)
- trans->journal_u64s += jset_u64s(i->k->k.u64s);
-
- ret = bch2_trans_journal_res_get(trans, JOURNAL_RES_GET_NONBLOCK);
+ ret = bch2_trans_journal_res_get(trans,
+ JOURNAL_RES_GET_NONBLOCK);
if (ret)
- goto out;
+ goto err;
}
+ /*
+ * Not allowed to fail after we've gotten our journal reservation - we
+ * have to use it:
+ */
+
if (!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY)) {
if (journal_seq_verify(c))
trans_for_each_update(trans, i)
if (fs_usage)
bch2_trans_fs_usage_apply(trans, fs_usage);
- if (likely(!(trans->flags & BTREE_INSERT_NOMARK)) &&
- unlikely(c->gc_pos.phase))
- trans_for_each_update(trans, i)
- if (gc_visited(c, gc_pos_btree_node(i->iter->l[0].b)))
- bch2_mark_update(trans, i, NULL,
- mark_flags|
- BCH_BUCKET_MARK_GC);
+ if (unlikely(c->gc_pos.phase))
+ bch2_trans_mark_gc(trans);
trans_for_each_update(trans, i)
do_btree_insert_one(trans, i);
-out:
- BUG_ON(ret &&
- (trans->flags & BTREE_INSERT_JOURNAL_RESERVED) &&
- trans->journal_res.ref);
-
- btree_trans_lock_write(trans, false);
-
+err:
if (fs_usage) {
bch2_fs_usage_scratch_put(c, fs_usage);
percpu_up_read(&c->mark_lock);
}
- bch2_journal_res_put(&c->journal, &trans->journal_res);
-out_clear_replicas:
- if (trans->fs_usage_deltas) {
- trans->fs_usage_deltas->used = 0;
- memset((void *) trans->fs_usage_deltas +
- offsetof(struct replicas_delta_list, memset_start), 0,
- (void *) &trans->fs_usage_deltas->memset_end -
- (void *) &trans->fs_usage_deltas->memset_start);
+ return ret;
+}
+
+/*
+ * Get journal reservation, take write locks, and attempt to do btree update(s):
+ */
+static inline int do_bch2_trans_commit(struct btree_trans *trans,
+ struct btree_insert_entry **stopped_at)
+{
+ struct btree_insert_entry *i;
+ struct btree_iter *iter;
+ unsigned idx, u64s, journal_preres_u64s = 0;
+ int ret;
+
+ /*
+ * note: running triggers will append more updates to the list of
+ * updates as we're walking it:
+ */
+ trans_for_each_update(trans, i) {
+ /* we know trans->nounlock won't be set here: */
+ if (unlikely(!(i->iter->locks_want < 1
+ ? __bch2_btree_iter_upgrade(i->iter, 1)
+ : i->iter->uptodate <= BTREE_ITER_NEED_PEEK))) {
+ trace_trans_restart_upgrade(trans->ip);
+ return -EINTR;
+ }
+
+ if (likely(!(trans->flags & BTREE_INSERT_NOMARK)) &&
+ update_has_trans_triggers(i)) {
+ ret = bch2_trans_mark_update(trans, i->iter, i->k);
+ if (unlikely(ret)) {
+ if (ret == -EINTR)
+ trace_trans_restart_mark(trans->ip);
+ return ret;
+ }
+ }
+
+ u64s = jset_u64s(i->k->k.u64s);
+ if (0)
+ journal_preres_u64s += u64s;
+ trans->journal_u64s += u64s;
}
- return ret;
+ ret = bch2_journal_preres_get(&trans->c->journal,
+ &trans->journal_preres, journal_preres_u64s,
+ JOURNAL_RES_GET_NONBLOCK);
+ if (unlikely(ret == -EAGAIN))
+ ret = bch2_trans_journal_preres_get_cold(trans,
+ journal_preres_u64s);
+ if (unlikely(ret))
+ return ret;
+
+ /*
+ * Can't be holding any read locks when we go to take write locks:
+ *
+ * note - this must be done after bch2_trans_journal_preres_get_cold()
+ * or anything else that might call bch2_trans_relock(), since that
+ * would just retake the read locks:
+ */
+ trans_for_each_iter_all(trans, iter) {
+ if (iter->nodes_locked != iter->nodes_intent_locked) {
+ EBUG_ON(iter->flags & BTREE_ITER_KEEP_UNTIL_COMMIT);
+ EBUG_ON(trans->iters_live & (1ULL << iter->idx));
+ bch2_btree_iter_unlock_noinline(iter);
+ }
+ }
+
+ if (IS_ENABLED(CONFIG_BCACHEFS_DEBUG))
+ trans_for_each_update(trans, i)
+ btree_insert_entry_checks(trans, i);
+ bch2_btree_trans_verify_locks(trans);
+
+ /*
+ * No more updates can be added - sort updates so we can take write
+ * locks in the correct order:
+ */
+ btree_trans_sort_updates(trans);
+
+ btree_trans_lock_write(trans, true);
+ ret = bch2_trans_commit_write_locked(trans, stopped_at);
+ btree_trans_lock_write(trans, false);
+
+ /*
+ * Drop journal reservation after dropping write locks, since dropping
+ * the journal reservation may kick off a journal write:
+ */
+ bch2_journal_res_put(&trans->c->journal, &trans->journal_res);
+
+ if (unlikely(ret))
+ return ret;
+
+ if (trans->flags & BTREE_INSERT_NOUNLOCK)
+ trans->nounlock = true;
+
+ trans_for_each_update_sorted(trans, i, idx)
+ if (!same_leaf_as_prev(trans, idx))
+ bch2_foreground_maybe_merge(trans->c, i->iter,
+ 0, trans->flags);
+
+ trans->nounlock = false;
+
+ trans_for_each_update(trans, i)
+ bch2_btree_iter_downgrade(i->iter);
+
+ return 0;
}
static noinline
return ret;
}
-/**
- * __bch_btree_insert_at - insert keys at given iterator positions
- *
- * This is main entry point for btree updates.
- *
- * Return values:
- * -EINTR: locking changed, this function should be called again. Only returned
- * if passed BTREE_INSERT_ATOMIC.
- * -EROFS: filesystem read only
- * -EIO: journal or btree node IO error
- */
-static int __bch2_trans_commit(struct btree_trans *trans,
- struct btree_insert_entry **stopped_at)
+static noinline int
+bch2_trans_commit_get_rw_cold(struct btree_trans *trans)
{
struct bch_fs *c = trans->c;
- struct btree_insert_entry *i;
- unsigned iter;
int ret;
- trans_for_each_update(trans, i) {
- if (!bch2_btree_iter_upgrade(i->iter, 1)) {
- trace_trans_restart_upgrade(trans->ip);
- ret = -EINTR;
- goto err;
- }
-
- ret = btree_iter_err(i->iter);
- if (ret)
- goto err;
- }
+ if (likely(!(trans->flags & BTREE_INSERT_LAZY_RW)))
+ return -EROFS;
- ret = do_btree_insert_at(trans, stopped_at);
- if (unlikely(ret))
- goto err;
-
- if (trans->flags & BTREE_INSERT_NOUNLOCK)
- trans->nounlock = true;
-
- trans_for_each_update_sorted(trans, i, iter)
- if (!same_leaf_as_prev(trans, iter))
- bch2_foreground_maybe_merge(c, i->iter,
- 0, trans->flags);
-
- trans->nounlock = false;
+ bch2_trans_unlock(trans);
- trans_for_each_update(trans, i)
- bch2_btree_iter_downgrade(i->iter);
-err:
- /* make sure we didn't drop or screw up locks: */
- bch2_btree_trans_verify_locks(trans);
+ ret = bch2_fs_read_write_early(c);
+ if (ret)
+ return ret;
- return ret;
+ percpu_ref_get(&c->writes);
+ return 0;
}
-int bch2_trans_commit(struct btree_trans *trans,
- struct disk_reservation *disk_res,
- u64 *journal_seq,
- unsigned flags)
+int __bch2_trans_commit(struct btree_trans *trans)
{
- struct bch_fs *c = trans->c;
struct btree_insert_entry *i = NULL;
struct btree_iter *iter;
unsigned orig_nr_updates = trans->nr_updates;
goto out_noupdates;
/* for the sake of sanity: */
- BUG_ON(trans->nr_updates > 1 && !(flags & BTREE_INSERT_ATOMIC));
-
- if (flags & BTREE_INSERT_GC_LOCK_HELD)
- lockdep_assert_held(&c->gc_lock);
+ EBUG_ON(trans->nr_updates > 1 && !(trans->flags & BTREE_INSERT_ATOMIC));
- if (!trans->commit_start)
- trans->commit_start = local_clock();
+ if (trans->flags & BTREE_INSERT_GC_LOCK_HELD)
+ lockdep_assert_held(&trans->c->gc_lock);
- memset(&trans->journal_res, 0, sizeof(trans->journal_res));
memset(&trans->journal_preres, 0, sizeof(trans->journal_preres));
- trans->disk_res = disk_res;
- trans->journal_seq = journal_seq;
- trans->flags = flags;
- if (unlikely(!(trans->flags & BTREE_INSERT_NOCHECK_RW) &&
- !percpu_ref_tryget(&c->writes))) {
- if (likely(!(trans->flags & BTREE_INSERT_LAZY_RW)))
- return -EROFS;
-
- bch2_trans_unlock(trans);
-
- ret = bch2_fs_read_write_early(c);
+ if (!(trans->flags & BTREE_INSERT_NOCHECK_RW) &&
+ unlikely(!percpu_ref_tryget(&trans->c->writes))) {
+ ret = bch2_trans_commit_get_rw_cold(trans);
if (ret)
return ret;
+ }
+retry:
+ memset(&trans->journal_res, 0, sizeof(trans->journal_res));
+ trans->journal_u64s = 0;
- percpu_ref_get(&c->writes);
+ ret = do_bch2_trans_commit(trans, &i);
- if (!bch2_trans_relock(trans)) {
- ret = -EINTR;
- goto err;
- }
+ if (trans->fs_usage_deltas) {
+ trans->fs_usage_deltas->used = 0;
+ memset((void *) trans->fs_usage_deltas +
+ offsetof(struct replicas_delta_list, memset_start), 0,
+ (void *) &trans->fs_usage_deltas->memset_end -
+ (void *) &trans->fs_usage_deltas->memset_start);
}
-retry:
- ret = bch2_trans_journal_preres_get(trans);
- if (ret)
- goto err;
- ret = __bch2_trans_commit(trans, &i);
+ /* make sure we didn't drop or screw up locks: */
+ bch2_btree_trans_verify_locks(trans);
+
if (ret)
goto err;
out:
- bch2_journal_preres_put(&c->journal, &trans->journal_preres);
+ bch2_journal_preres_put(&trans->c->journal, &trans->journal_preres);
- if (unlikely(!(trans->flags & BTREE_INSERT_NOCHECK_RW)))
- percpu_ref_put(&c->writes);
+ if (likely(!(trans->flags & BTREE_INSERT_NOCHECK_RW)))
+ percpu_ref_put(&trans->c->writes);
out_noupdates:
- if (!ret && trans->commit_start) {
- bch2_time_stats_update(&c->times[BCH_TIME_btree_update],
- trans->commit_start);
- trans->commit_start = 0;
- }
-
- BUG_ON(!(trans->flags & BTREE_INSERT_ATOMIC) && ret == -EINTR);
+ EBUG_ON(!(trans->flags & BTREE_INSERT_ATOMIC) && ret == -EINTR);
- trans_for_each_iter(trans, iter)
+ trans_for_each_iter_all(trans, iter)
iter->flags &= ~BTREE_ITER_KEEP_UNTIL_COMMIT;
if (!ret) {
err:
ret = bch2_trans_commit_error(trans, i, ret);
- /* free updates and memory used by triggers, they'll be reexecuted: */
- trans->nr_updates = orig_nr_updates;
- trans->mem_top = orig_mem_top;
-
/* can't loop if it was passed in and we changed it: */
if (unlikely(trans->flags & BTREE_INSERT_NO_CLEAR_REPLICAS) && !ret)
ret = -EINTR;
+ if (ret)
+ goto out;
- if (!ret)
- goto retry;
-
- goto out;
+ /* free updates and memory used by triggers, they'll be reexecuted: */
+ trans->nr_updates = orig_nr_updates;
+ trans->mem_top = orig_mem_top;
+ goto retry;
}
/**
projects / linux-block.git / commitdiff