#include <linux/sort.h>
#include <trace/events/bcachefs.h>
+static int __must_check
+bch2_trans_update_by_path(struct btree_trans *, struct btree_path *,
+ struct bkey_i *, enum btree_update_flags);
+
static inline int btree_insert_entry_cmp(const struct btree_insert_entry *l,
const struct btree_insert_entry *r)
{
return cmp_int(l->btree_id, r->btree_id) ?:
+ cmp_int(l->cached, r->cached) ?:
-cmp_int(l->level, r->level) ?:
bpos_cmp(l->k->k.p, r->k->k.p);
}
struct bch_fs *c = container_of(j, struct bch_fs, journal);
struct btree_write *w = container_of(pin, struct btree_write, journal);
struct btree *b = container_of(w, struct btree, writes[i]);
+ unsigned long old, new, v;
+ unsigned idx = w - b->writes;
+
+ six_lock_read(&b->c.lock, NULL, NULL);
+ v = READ_ONCE(b->flags);
+
+ do {
+ old = new = v;
+
+ if (!(old & (1 << BTREE_NODE_dirty)) ||
+ !!(old & (1 << BTREE_NODE_write_idx)) != idx ||
+ w->journal.seq != seq)
+ break;
- btree_node_lock_type(c, b, SIX_LOCK_read);
- bch2_btree_node_write_cond(c, b,
- (btree_current_write(b) == w && w->journal.seq == seq));
+ new |= 1 << BTREE_NODE_need_write;
+ } while ((v = cmpxchg(&b->flags, old, new)) != old);
+
+ btree_node_write_if_need(c, b, SIX_LOCK_read);
six_unlock_read(&b->c.lock);
return 0;
}
/**
* btree_insert_key - insert a key one key into a leaf node
*/
-static bool btree_insert_key_leaf(struct btree_trans *trans,
+static void btree_insert_key_leaf(struct btree_trans *trans,
struct btree_insert_entry *insert)
{
struct bch_fs *c = trans->c;
if (unlikely(!bch2_btree_bset_insert_key(trans, insert->path, b,
&insert_l(insert)->iter, insert->k)))
- return false;
+ return;
i->journal_seq = cpu_to_le64(max(trans->journal_res.seq,
le64_to_cpu(i->journal_seq)));
bch2_btree_add_journal_pin(c, b, trans->journal_res.seq);
if (unlikely(!btree_node_dirty(b)))
- set_btree_node_dirty(c, b);
+ set_btree_node_dirty_acct(c, b);
live_u64s_added = (int) b->nr.live_u64s - old_live_u64s;
u64s_added = (int) bset_u64s(t) - old_u64s;
if (u64s_added > live_u64s_added &&
bch2_maybe_compact_whiteouts(c, b))
bch2_trans_node_reinit_iter(trans, b);
-
- return true;
}
/* Cached btree updates: */
struct bch_fs *c = trans->c;
int ret;
- if (trans->flags & BTREE_INSERT_JOURNAL_RESERVED)
- flags |= JOURNAL_RES_GET_RESERVED;
-
ret = bch2_journal_res_get(&c->journal, &trans->journal_res,
- trans->journal_u64s, flags);
+ trans->journal_u64s,
+ flags|
+ (trans->flags & JOURNAL_WATERMARK_MASK));
return ret == -EAGAIN ? BTREE_INSERT_NEED_JOURNAL_RES : ret;
}
#define JSET_ENTRY_LOG_U64s 4
-static noinline void journal_transaction_name(struct btree_trans *trans)
+static void journal_transaction_name(struct btree_trans *trans)
{
struct bch_fs *c = trans->c;
- struct jset_entry *entry = journal_res_entry(&c->journal, &trans->journal_res);
- struct jset_entry_log *l = container_of(entry, struct jset_entry_log, entry);
- unsigned u64s = JSET_ENTRY_LOG_U64s - 1;
- unsigned b, buflen = u64s * sizeof(u64);
-
- l->entry.u64s = cpu_to_le16(u64s);
- l->entry.btree_id = 0;
- l->entry.level = 0;
- l->entry.type = BCH_JSET_ENTRY_log;
- l->entry.pad[0] = 0;
- l->entry.pad[1] = 0;
- l->entry.pad[2] = 0;
- b = min_t(unsigned, strlen(trans->fn), buflen);
- memcpy(l->d, trans->fn, b);
- while (b < buflen)
- l->d[b++] = '\0';
-
- trans->journal_res.offset += JSET_ENTRY_LOG_U64s;
- trans->journal_res.u64s -= JSET_ENTRY_LOG_U64s;
+ struct journal *j = &c->journal;
+ struct jset_entry *entry =
+ bch2_journal_add_entry(j, &trans->journal_res,
+ BCH_JSET_ENTRY_log, 0, 0,
+ JSET_ENTRY_LOG_U64s);
+ struct jset_entry_log *l =
+ container_of(entry, struct jset_entry_log, entry);
+
+ strncpy(l->d, trans->fn, JSET_ENTRY_LOG_U64s * sizeof(u64));
}
static inline enum btree_insert_ret
{
struct bch_fs *c = trans->c;
struct bkey_cached *ck = (void *) path->l[0].b;
- unsigned new_u64s;
+ unsigned old_u64s = ck->u64s, new_u64s;
struct bkey_i *new_k;
EBUG_ON(path->level);
ck->u64s = new_u64s;
ck->k = new_k;
- return BTREE_INSERT_OK;
+ /*
+ * Keys returned by peek() are no longer valid pointers, so we need a
+ * transaction restart:
+ */
+ trace_trans_restart_key_cache_key_realloced(trans->fn, _RET_IP_,
+ path->btree_id, &path->pos,
+ old_u64s, new_u64s);
+ /*
+ * Not using btree_trans_restart() because we can't unlock here, we have
+ * write locks held:
+ */
+ trans->restarted = true;
+ return -EINTR;
}
-static inline void do_btree_insert_one(struct btree_trans *trans,
- struct btree_insert_entry *i)
+/* Triggers: */
+
+static int run_one_mem_trigger(struct btree_trans *trans,
+ struct btree_insert_entry *i,
+ unsigned flags)
{
- struct bch_fs *c = trans->c;
- struct journal *j = &c->journal;
- bool did_work;
+ struct bkey_s_c old = { &i->old_k, i->old_v };
+ struct bkey_i *new = i->k;
+ int ret;
- EBUG_ON(trans->journal_res.ref !=
- !(trans->flags & BTREE_INSERT_JOURNAL_REPLAY));
+ if (unlikely(flags & BTREE_TRIGGER_NORUN))
+ return 0;
- i->k->k.needs_whiteout = false;
+ if (!btree_node_type_needs_gc(i->btree_id))
+ return 0;
- did_work = !i->cached
- ? btree_insert_key_leaf(trans, i)
- : bch2_btree_insert_key_cached(trans, i->path, i->k);
- if (!did_work)
- return;
+ if (bch2_bkey_ops[old.k->type].atomic_trigger ==
+ bch2_bkey_ops[i->k->k.type].atomic_trigger &&
+ ((1U << old.k->type) & BTREE_TRIGGER_WANTS_OLD_AND_NEW)) {
+ ret = bch2_mark_key(trans, old, bkey_i_to_s_c(new),
+ BTREE_TRIGGER_INSERT|BTREE_TRIGGER_OVERWRITE|flags);
+ } else {
+ struct bkey _deleted = KEY(0, 0, 0);
+ struct bkey_s_c deleted = (struct bkey_s_c) { &_deleted, NULL };
- if (likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY))) {
- bch2_journal_add_keys(j, &trans->journal_res,
- i->btree_id,
- i->level,
- i->k);
+ _deleted.p = i->path->pos;
- if (trans->journal_seq)
- *trans->journal_seq = trans->journal_res.seq;
+ ret = bch2_mark_key(trans, deleted, bkey_i_to_s_c(new),
+ BTREE_TRIGGER_INSERT|flags) ?:
+ bch2_mark_key(trans, old, deleted,
+ BTREE_TRIGGER_OVERWRITE|flags);
+ }
+
+ return ret;
+}
+
+static int run_one_trans_trigger(struct btree_trans *trans, struct btree_insert_entry *i,
+ bool overwrite)
+{
+ /*
+ * Transactional triggers create new btree_insert_entries, so we can't
+ * pass them a pointer to a btree_insert_entry, that memory is going to
+ * move:
+ */
+ struct bkey old_k = i->old_k;
+ struct bkey_s_c old = { &old_k, i->old_v };
+
+ if ((i->flags & BTREE_TRIGGER_NORUN) ||
+ !(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)))
+ return 0;
+
+ if (!i->insert_trigger_run &&
+ !i->overwrite_trigger_run &&
+ bch2_bkey_ops[old.k->type].trans_trigger ==
+ bch2_bkey_ops[i->k->k.type].trans_trigger &&
+ ((1U << old.k->type) & BTREE_TRIGGER_WANTS_OLD_AND_NEW)) {
+ i->overwrite_trigger_run = true;
+ i->insert_trigger_run = true;
+ return bch2_trans_mark_key(trans, i->btree_id, i->level, old, i->k,
+ BTREE_TRIGGER_INSERT|
+ BTREE_TRIGGER_OVERWRITE|
+ i->flags) ?: 1;
+ } else if (overwrite && !i->overwrite_trigger_run) {
+ i->overwrite_trigger_run = true;
+ return bch2_trans_mark_old(trans, i->btree_id, i->level, old, i->flags) ?: 1;
+ } else if (!overwrite && !i->insert_trigger_run) {
+ i->insert_trigger_run = true;
+ return bch2_trans_mark_new(trans, i->btree_id, i->level, i->k, i->flags) ?: 1;
+ } else {
+ return 0;
+ }
+}
+
+static int run_btree_triggers(struct btree_trans *trans, enum btree_id btree_id,
+ struct btree_insert_entry *btree_id_start)
+{
+ struct btree_insert_entry *i;
+ bool trans_trigger_run;
+ int ret, overwrite;
+
+ for (overwrite = 1; overwrite >= 0; --overwrite) {
+
+ /*
+ * Running triggers will append more updates to the list of updates as
+ * we're walking it:
+ */
+ do {
+ trans_trigger_run = false;
+
+ for (i = btree_id_start;
+ i < trans->updates + trans->nr_updates && i->btree_id <= btree_id;
+ i++) {
+ if (i->btree_id != btree_id)
+ continue;
+
+ ret = run_one_trans_trigger(trans, i, overwrite);
+ if (ret < 0)
+ return ret;
+ if (ret)
+ trans_trigger_run = true;
+ }
+ } while (trans_trigger_run);
+ }
+
+ return 0;
+}
+
+static int bch2_trans_commit_run_triggers(struct btree_trans *trans)
+{
+ struct btree_insert_entry *i = NULL, *btree_id_start = trans->updates;
+ unsigned btree_id = 0;
+ int ret = 0;
+
+ /*
+ *
+ * For a given btree, this algorithm runs insert triggers before
+ * overwrite triggers: this is so that when extents are being moved
+ * (e.g. by FALLOCATE_FL_INSERT_RANGE), we don't drop references before
+ * they are re-added.
+ */
+ for (btree_id = 0; btree_id < BTREE_ID_NR; btree_id++) {
+ if (btree_id == BTREE_ID_alloc)
+ continue;
+
+ while (btree_id_start < trans->updates + trans->nr_updates &&
+ btree_id_start->btree_id < btree_id)
+ btree_id_start++;
+
+ ret = run_btree_triggers(trans, btree_id, btree_id_start);
+ if (ret)
+ return ret;
}
+
+ trans_for_each_update(trans, i) {
+ if (i->btree_id > BTREE_ID_alloc)
+ break;
+ if (i->btree_id == BTREE_ID_alloc) {
+ ret = run_btree_triggers(trans, BTREE_ID_alloc, i);
+ if (ret)
+ return ret;
+ break;
+ }
+ }
+
+ trans_for_each_update(trans, i)
+ BUG_ON(!(i->flags & BTREE_TRIGGER_NORUN) &&
+ (BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)) &&
+ (!i->insert_trigger_run || !i->overwrite_trigger_run));
+
+ return 0;
}
-static noinline void bch2_trans_mark_gc(struct btree_trans *trans)
+static noinline int bch2_trans_commit_run_gc_triggers(struct btree_trans *trans)
{
struct bch_fs *c = trans->c;
struct btree_insert_entry *i;
+ int ret = 0;
trans_for_each_update(trans, i) {
/*
*/
BUG_ON(i->cached || i->level);
- if (gc_visited(c, gc_pos_btree_node(insert_l(i)->b)))
- bch2_mark_update(trans, i->path, i->k,
- i->flags|BTREE_TRIGGER_GC);
+ if (gc_visited(c, gc_pos_btree_node(insert_l(i)->b))) {
+ ret = run_one_mem_trigger(trans, i, i->flags|BTREE_TRIGGER_GC);
+ if (ret)
+ break;
+ }
}
+
+ return ret;
}
static inline int
if (btree_node_type_needs_gc(i->bkey_type))
marking = true;
+
+ /*
+ * Revalidate before calling mem triggers - XXX, ugly:
+ *
+ * - successful btree node splits don't cause transaction
+ * restarts and will have invalidated the pointer to the bkey
+ * value
+ * - btree_node_lock_for_insert() -> btree_node_prep_for_write()
+ * when it has to resort
+ * - btree_key_can_insert_cached() when it has to reallocate
+ *
+ * Ugly because we currently have no way to tell if the
+ * pointer's been invalidated, which means it's debatabale
+ * whether we should be stashing the old key at all.
+ */
+ i->old_v = bch2_btree_path_peek_slot(i->path, &i->old_k).v;
+
+ if (unlikely(!test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags))) {
+ struct bkey_i *j_k =
+ bch2_journal_keys_peek_slot(c, i->btree_id, i->level,
+ i->k->k.p);
+
+ if (j_k) {
+ i->old_k = j_k->k;
+ i->old_v = &j_k->v;
+ }
+ }
}
/*
if (ret)
return ret;
- if (unlikely(trans->journal_transaction_names))
- journal_transaction_name(trans);
+ journal_transaction_name(trans);
} else {
trans->journal_res.seq = c->journal.replay_journal_seq;
}
- if (unlikely(trans->extra_journal_entry_u64s)) {
+ if (unlikely(trans->extra_journal_entries.nr)) {
memcpy_u64s_small(journal_res_entry(&c->journal, &trans->journal_res),
- trans->extra_journal_entries,
- trans->extra_journal_entry_u64s);
+ trans->extra_journal_entries.data,
+ trans->extra_journal_entries.nr);
- trans->journal_res.offset += trans->extra_journal_entry_u64s;
- trans->journal_res.u64s -= trans->extra_journal_entry_u64s;
+ trans->journal_res.offset += trans->extra_journal_entries.nr;
+ trans->journal_res.u64s -= trans->extra_journal_entries.nr;
}
/*
return BTREE_INSERT_NEED_MARK_REPLICAS;
trans_for_each_update(trans, i)
- if (BTREE_NODE_TYPE_HAS_MEM_TRIGGERS & (1U << i->bkey_type))
- bch2_mark_update(trans, i->path, i->k, i->flags);
+ if (BTREE_NODE_TYPE_HAS_MEM_TRIGGERS & (1U << i->bkey_type)) {
+ ret = run_one_mem_trigger(trans, i, i->flags);
+ if (ret)
+ return ret;
+ }
- if (unlikely(c->gc_pos.phase))
- bch2_trans_mark_gc(trans);
+ if (unlikely(c->gc_pos.phase)) {
+ ret = bch2_trans_commit_run_gc_triggers(trans);
+ if (ret)
+ return ret;
+ }
- trans_for_each_update(trans, i)
- do_btree_insert_one(trans, i);
+ if (likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY))) {
+ trans_for_each_update(trans, i) {
+ struct journal *j = &c->journal;
+ struct jset_entry *entry;
+
+ if (i->key_cache_already_flushed)
+ continue;
+
+ entry = bch2_journal_add_entry(j, &trans->journal_res,
+ BCH_JSET_ENTRY_overwrite,
+ i->btree_id, i->level,
+ i->old_k.u64s);
+ bkey_reassemble(&entry->start[0],
+ (struct bkey_s_c) { &i->old_k, i->old_v });
+
+ entry = bch2_journal_add_entry(j, &trans->journal_res,
+ BCH_JSET_ENTRY_btree_keys,
+ i->btree_id, i->level,
+ i->k->k.u64s);
+ bkey_copy(&entry->start[0], i->k);
+ }
+
+ if (trans->journal_seq)
+ *trans->journal_seq = trans->journal_res.seq;
+ }
+
+ trans_for_each_update(trans, i) {
+ i->k->k.needs_whiteout = false;
+
+ if (!i->cached)
+ btree_insert_key_leaf(trans, i);
+ else if (!i->key_cache_already_flushed)
+ bch2_btree_insert_key_cached(trans, i->path, i->k);
+ else
+ bch2_btree_key_cache_drop(trans, i->path);
+ }
return ret;
}
if (have_conflicting_read_lock(trans, i->path))
goto fail;
- __btree_node_lock_type(trans->c, insert_l(i)->b,
- SIX_LOCK_write);
+ btree_node_lock_type(trans, i->path,
+ insert_l(i)->b,
+ i->path->pos, i->level,
+ SIX_LOCK_write, NULL, NULL);
}
bch2_btree_node_prep_for_write(trans, i->path, insert_l(i)->b);
{
struct bch_fs *c = trans->c;
struct btree_insert_entry *i;
- struct bkey_s_c old;
+ struct printbuf buf = PRINTBUF;
int ret, u64s_delta = 0;
+ int rw = (trans->flags & BTREE_INSERT_JOURNAL_REPLAY) ? READ : WRITE;
trans_for_each_update(trans, i) {
- const char *invalid = bch2_bkey_invalid(c,
- bkey_i_to_s_c(i->k), i->bkey_type);
- if (invalid) {
- char buf[200];
-
- bch2_bkey_val_to_text(&PBUF(buf), c, bkey_i_to_s_c(i->k));
- bch_err(c, "invalid bkey %s on insert from %s -> %ps: %s\n",
- buf, trans->fn, (void *) i->ip_allocated, invalid);
- bch2_fatal_error(c);
+ if (bch2_bkey_invalid(c, bkey_i_to_s_c(i->k),
+ i->bkey_type, rw, &buf)) {
+ printbuf_reset(&buf);
+ pr_buf(&buf, "invalid bkey on insert from %s -> %ps",
+ trans->fn, (void *) i->ip_allocated);
+ pr_newline(&buf);
+ pr_indent_push(&buf, 2);
+
+ bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(i->k));
+ pr_newline(&buf);
+
+ bch2_bkey_invalid(c, bkey_i_to_s_c(i->k),
+ i->bkey_type, rw, &buf);
+
+ bch2_trans_inconsistent(trans, "%s", buf.buf);
+ printbuf_exit(&buf);
return -EINVAL;
}
btree_insert_entry_checks(trans, i);
}
- trans_for_each_update(trans, i) {
- struct bkey u;
+ printbuf_exit(&buf);
- /*
- * peek_slot() doesn't yet work on iterators that point to
- * interior nodes:
- */
- if (i->cached || i->level)
+ trans_for_each_update(trans, i) {
+ if (i->cached)
continue;
- old = bch2_btree_path_peek_slot(i->path, &u);
- ret = bkey_err(old);
- if (unlikely(ret))
- return ret;
-
u64s_delta += !bkey_deleted(&i->k->k) ? i->k->k.u64s : 0;
- u64s_delta -= !bkey_deleted(old.k) ? old.k->u64s : 0;
+ u64s_delta -= i->old_btree_u64s;
if (!same_leaf_as_next(trans, i)) {
if (u64s_delta <= 0) {
ret = bch2_journal_preres_get(&c->journal,
&trans->journal_preres, trans->journal_preres_u64s,
JOURNAL_RES_GET_NONBLOCK|
- ((trans->flags & BTREE_INSERT_JOURNAL_RESERVED)
- ? JOURNAL_RES_GET_RESERVED : 0));
+ (trans->flags & JOURNAL_WATERMARK_MASK));
if (unlikely(ret == -EAGAIN))
ret = bch2_trans_journal_preres_get_cold(trans,
trans->journal_preres_u64s, trace_ip);
bch2_trans_unlock(trans);
if ((trans->flags & BTREE_INSERT_JOURNAL_RECLAIM) &&
- !(trans->flags & BTREE_INSERT_JOURNAL_RESERVED)) {
+ !(trans->flags & JOURNAL_WATERMARK_reserved)) {
trans->restarted = true;
ret = -EAGAIN;
break;
struct bch_fs *c = trans->c;
int ret;
- if (likely(!(trans->flags & BTREE_INSERT_LAZY_RW)))
+ if (likely(!(trans->flags & BTREE_INSERT_LAZY_RW)) ||
+ test_bit(BCH_FS_STARTED, &c->flags))
return -EROFS;
bch2_trans_unlock(trans);
return 0;
}
-static int bch2_trans_commit_run_triggers(struct btree_trans *trans)
+/*
+ * This is for updates done in the early part of fsck - btree_gc - before we've
+ * gone RW. we only add the new key to the list of keys for journal replay to
+ * do.
+ */
+static noinline int
+do_bch2_trans_commit_to_journal_replay(struct btree_trans *trans)
{
- struct bkey _deleted = KEY(0, 0, 0);
- struct bkey_s_c deleted = (struct bkey_s_c) { &_deleted, NULL };
- struct bkey_s_c old;
- struct bkey unpacked;
- struct btree_insert_entry *i = NULL, *btree_id_start = trans->updates;
- bool trans_trigger_run;
- unsigned btree_id = 0;
+ struct bch_fs *c = trans->c;
+ struct btree_insert_entry *i;
int ret = 0;
- /*
- *
- * For a given btree, this algorithm runs insert triggers before
- * overwrite triggers: this is so that when extents are being moved
- * (e.g. by FALLOCATE_FL_INSERT_RANGE), we don't drop references before
- * they are re-added.
- */
- for (btree_id = 0; btree_id < BTREE_ID_NR; btree_id++) {
- while (btree_id_start < trans->updates + trans->nr_updates &&
- btree_id_start->btree_id < btree_id)
- btree_id_start++;
-
- /*
- * Running triggers will append more updates to the list of updates as
- * we're walking it:
- */
- do {
- trans_trigger_run = false;
-
- for (i = btree_id_start;
- i < trans->updates + trans->nr_updates && i->btree_id <= btree_id;
- i++) {
- if (i->insert_trigger_run ||
- (i->flags & BTREE_TRIGGER_NORUN) ||
- !(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)))
- continue;
-
- BUG_ON(i->overwrite_trigger_run);
-
- i->insert_trigger_run = true;
- trans_trigger_run = true;
-
- old = bch2_btree_path_peek_slot(i->path, &unpacked);
- _deleted.p = i->path->pos;
-
- if (old.k->type == i->k->k.type &&
- ((1U << old.k->type) & BTREE_TRIGGER_WANTS_OLD_AND_NEW)) {
- i->overwrite_trigger_run = true;
- ret = bch2_trans_mark_key(trans, old, bkey_i_to_s_c(i->k),
- BTREE_TRIGGER_INSERT|BTREE_TRIGGER_OVERWRITE|i->flags);
- } else {
- ret = bch2_trans_mark_key(trans, deleted, bkey_i_to_s_c(i->k),
- BTREE_TRIGGER_INSERT|i->flags);
- }
-
- if (ret == -EINTR)
- trace_trans_restart_mark(trans->fn, _RET_IP_,
- i->btree_id, &i->path->pos);
- if (ret)
- return ret;
- }
- } while (trans_trigger_run);
-
- do {
- trans_trigger_run = false;
-
- for (i = btree_id_start;
- i < trans->updates + trans->nr_updates && i->btree_id <= btree_id;
- i++) {
- if (i->overwrite_trigger_run ||
- (i->flags & BTREE_TRIGGER_NORUN) ||
- !(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)))
- continue;
-
- BUG_ON(!i->insert_trigger_run);
-
- i->overwrite_trigger_run = true;
- trans_trigger_run = true;
-
- old = bch2_btree_path_peek_slot(i->path, &unpacked);
- _deleted.p = i->path->pos;
-
- ret = bch2_trans_mark_key(trans, old, deleted,
- BTREE_TRIGGER_OVERWRITE|i->flags);
-
- if (ret == -EINTR)
- trace_trans_restart_mark(trans->fn, _RET_IP_,
- i->btree_id, &i->path->pos);
- if (ret)
- return ret;
- }
- } while (trans_trigger_run);
+ trans_for_each_update(trans, i) {
+ ret = bch2_journal_key_insert(c, i->btree_id, i->level, i->k);
+ if (ret)
+ break;
}
- trans_for_each_update(trans, i)
- BUG_ON(!(i->flags & BTREE_TRIGGER_NORUN) &&
- (BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)) &&
- (!i->insert_trigger_run || !i->overwrite_trigger_run));
-
- return 0;
+ return ret;
}
int __bch2_trans_commit(struct btree_trans *trans)
int ret = 0;
if (!trans->nr_updates &&
- !trans->extra_journal_entry_u64s)
+ !trans->extra_journal_entries.nr)
goto out_reset;
if (trans->flags & BTREE_INSERT_GC_LOCK_HELD)
lockdep_assert_held(&c->gc_lock);
- memset(&trans->journal_preres, 0, sizeof(trans->journal_preres));
-
- trans->journal_u64s = trans->extra_journal_entry_u64s;
- trans->journal_preres_u64s = 0;
-
- trans->journal_transaction_names = READ_ONCE(c->opts.journal_transaction_names);
+ ret = bch2_trans_commit_run_triggers(trans);
+ if (ret)
+ goto out_reset;
- if (trans->journal_transaction_names)
- trans->journal_u64s += JSET_ENTRY_LOG_U64s;
+ if (unlikely(!test_bit(BCH_FS_MAY_GO_RW, &c->flags))) {
+ ret = do_bch2_trans_commit_to_journal_replay(trans);
+ goto out_reset;
+ }
if (!(trans->flags & BTREE_INSERT_NOCHECK_RW) &&
unlikely(!percpu_ref_tryget(&c->writes))) {
goto out_reset;
}
-#ifdef CONFIG_BCACHEFS_DEBUG
- /*
- * if BTREE_TRIGGER_NORUN is set, it means we're probably being called
- * from the key cache flush code:
- */
- trans_for_each_update(trans, i)
- if (!i->cached &&
- !(i->flags & BTREE_TRIGGER_NORUN))
- bch2_btree_key_cache_verify_clean(trans,
- i->btree_id, i->k->k.p);
-#endif
+ EBUG_ON(test_bit(BCH_FS_CLEAN_SHUTDOWN, &c->flags));
- ret = bch2_trans_commit_run_triggers(trans);
- if (ret)
- goto out;
+ memset(&trans->journal_preres, 0, sizeof(trans->journal_preres));
+
+ trans->journal_u64s = trans->extra_journal_entries.nr;
+ trans->journal_preres_u64s = 0;
+
+ /* For journalling transaction name: */
+ trans->journal_u64s += jset_u64s(JSET_ENTRY_LOG_U64s);
trans_for_each_update(trans, i) {
BUG_ON(!i->path->should_be_locked);
BUG_ON(!btree_node_intent_locked(i->path, i->level));
+ if (i->key_cache_already_flushed)
+ continue;
+
+ /* we're going to journal the key being updated: */
u64s = jset_u64s(i->k->k.u64s);
if (i->cached &&
likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY)))
trans->journal_preres_u64s += u64s;
trans->journal_u64s += u64s;
+
+ /* and we're also going to log the overwrite: */
+ trans->journal_u64s += jset_u64s(i->old_k.u64s);
}
if (trans->extra_journal_res) {
if (ret)
goto err;
+
+ trace_transaction_commit(trans->fn, _RET_IP_);
out:
bch2_journal_preres_put(&c->journal, &trans->journal_preres);
if (likely(!(trans->flags & BTREE_INSERT_NOCHECK_RW)))
percpu_ref_put(&c->writes);
out_reset:
- trans_for_each_update(trans, i)
- bch2_path_put(trans, i->path, true);
-
- trans->extra_journal_res = 0;
- trans->nr_updates = 0;
- trans->hooks = NULL;
- trans->extra_journal_entries = NULL;
- trans->extra_journal_entry_u64s = 0;
+ bch2_trans_reset_updates(trans);
if (trans->fs_usage_deltas) {
trans->fs_usage_deltas->used = 0;
- memset(&trans->fs_usage_deltas->memset_start, 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);
}
struct bkey_s_c k;
int ret;
+ if (!btree_type_has_snapshots(id))
+ return 0;
+
if (!snapshot_t(c, pos.snapshot)->children[0])
return 0;
return ret;
}
-static int bch2_trans_update_extent(struct btree_trans *trans,
- struct btree_iter *orig_iter,
- struct bkey_i *insert,
- enum btree_update_flags flags)
+int bch2_trans_update_extent(struct btree_trans *trans,
+ struct btree_iter *orig_iter,
+ struct bkey_i *insert,
+ enum btree_update_flags flags)
{
struct bch_fs *c = trans->c;
struct btree_iter iter, update_iter;
BTREE_ITER_INTENT|
BTREE_ITER_WITH_UPDATES|
BTREE_ITER_NOT_EXTENTS);
- k = bch2_btree_iter_peek(&iter);
+ k = bch2_btree_iter_peek_upto(&iter, POS(insert->k.p.inode, U64_MAX));
if ((ret = bkey_err(k)))
goto err;
if (!k.k)
bkey_reassemble(update, k);
bch2_cut_front(insert->k.p, update);
- bch2_trans_copy_iter(&update_iter, &iter);
- update_iter.pos = update->k.p;
- ret = bch2_trans_update(trans, &update_iter, update,
+ ret = bch2_trans_update_by_path(trans, iter.path, update,
BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE|
flags);
- bch2_trans_iter_exit(trans, &update_iter);
-
if (ret)
goto err;
goto out;
}
next:
- k = bch2_btree_iter_next(&iter);
+ bch2_btree_iter_advance(&iter);
+ k = bch2_btree_iter_peek_upto(&iter, POS(insert->k.p.inode, U64_MAX));
if ((ret = bkey_err(k)))
goto err;
if (!k.k)
return ret;
}
-int __must_check bch2_trans_update(struct btree_trans *trans, struct btree_iter *iter,
- struct bkey_i *k, enum btree_update_flags flags)
+static int __must_check
+bch2_trans_update_by_path_trace(struct btree_trans *trans, struct btree_path *path,
+ struct bkey_i *k, enum btree_update_flags flags,
+ unsigned long ip)
{
+ struct bch_fs *c = trans->c;
struct btree_insert_entry *i, n;
+ int ret = 0;
- BUG_ON(!iter->path->should_be_locked);
-
- if (iter->flags & BTREE_ITER_IS_EXTENTS)
- return bch2_trans_update_extent(trans, iter, k, flags);
+ BUG_ON(!path->should_be_locked);
BUG_ON(trans->nr_updates >= BTREE_ITER_MAX);
- BUG_ON(bpos_cmp(k->k.p, iter->path->pos));
+ BUG_ON(bpos_cmp(k->k.p, path->pos));
n = (struct btree_insert_entry) {
.flags = flags,
- .bkey_type = __btree_node_type(iter->path->level, iter->btree_id),
- .btree_id = iter->btree_id,
- .level = iter->path->level,
- .cached = iter->flags & BTREE_ITER_CACHED,
- .path = iter->path,
+ .bkey_type = __btree_node_type(path->level, path->btree_id),
+ .btree_id = path->btree_id,
+ .level = path->level,
+ .cached = path->cached,
+ .path = path,
.k = k,
- .ip_allocated = _RET_IP_,
+ .ip_allocated = ip,
};
#ifdef CONFIG_BCACHEFS_DEBUG
btree_insert_entry_cmp(i - 1, i) >= 0);
#endif
- if (bkey_deleted(&n.k->k) &&
- (iter->flags & BTREE_ITER_FILTER_SNAPSHOTS)) {
- int ret = need_whiteout_for_snapshot(trans, n.btree_id, n.k->k.p);
- if (unlikely(ret < 0))
- return ret;
-
- if (ret)
- n.k->k.type = KEY_TYPE_whiteout;
- }
-
/*
* Pending updates are kept sorted: first, find position of new update,
* then delete/trim any updates the new update overwrites:
!btree_insert_entry_cmp(&n, i)) {
BUG_ON(i->insert_trigger_run || i->overwrite_trigger_run);
- /*
- * This is a hack to ensure that inode creates update the btree,
- * not the key cache, which helps with cache coherency issues in
- * other areas:
- */
- if (n.cached && !i->cached) {
- i->k = n.k;
- i->flags = n.flags;
- return 0;
- }
-
bch2_path_put(trans, i->path, true);
- *i = n;
- } else
+ i->flags = n.flags;
+ i->cached = n.cached;
+ i->k = n.k;
+ i->path = n.path;
+ i->ip_allocated = n.ip_allocated;
+ } else {
array_insert_item(trans->updates, trans->nr_updates,
i - trans->updates, n);
- __btree_path_get(n.path, true);
+ i->old_v = bch2_btree_path_peek_slot(path, &i->old_k).v;
+ i->old_btree_u64s = !bkey_deleted(&i->old_k) ? i->old_k.u64s : 0;
- return 0;
+ if (unlikely(!test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags))) {
+ struct bkey_i *j_k =
+ bch2_journal_keys_peek_slot(c, n.btree_id, n.level, k->k.p);
+
+ if (j_k) {
+ i->old_k = j_k->k;
+ i->old_v = &j_k->v;
+ }
+ }
+ }
+
+ __btree_path_get(i->path, true);
+
+ /*
+ * If a key is present in the key cache, it must also exist in the
+ * btree - this is necessary for cache coherency. When iterating over
+ * a btree that's cached in the key cache, the btree iter code checks
+ * the key cache - but the key has to exist in the btree for that to
+ * work:
+ */
+ if (path->cached &&
+ bkey_deleted(&i->old_k)) {
+ struct btree_path *btree_path;
+
+ i->key_cache_already_flushed = true;
+ i->flags |= BTREE_TRIGGER_NORUN;
+
+ btree_path = bch2_path_get(trans, path->btree_id, path->pos, 1, 0,
+ BTREE_ITER_INTENT, _THIS_IP_);
+
+ ret = bch2_btree_path_traverse(trans, btree_path, 0);
+ if (ret)
+ goto err;
+
+ btree_path->should_be_locked = true;
+ ret = bch2_trans_update_by_path_trace(trans, btree_path, k, flags, ip);
+err:
+ bch2_path_put(trans, btree_path, true);
+ }
+
+ return ret;
+}
+
+static int __must_check
+bch2_trans_update_by_path(struct btree_trans *trans, struct btree_path *path,
+ struct bkey_i *k, enum btree_update_flags flags)
+{
+ return bch2_trans_update_by_path_trace(trans, path, k, flags, _RET_IP_);
+}
+
+int __must_check bch2_trans_update(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_i *k, enum btree_update_flags flags)
+{
+ struct btree_path *path = iter->update_path ?: iter->path;
+ struct bkey_cached *ck;
+ int ret;
+
+ if (iter->flags & BTREE_ITER_IS_EXTENTS)
+ return bch2_trans_update_extent(trans, iter, k, flags);
+
+ if (bkey_deleted(&k->k) &&
+ !(flags & BTREE_UPDATE_KEY_CACHE_RECLAIM) &&
+ (iter->flags & BTREE_ITER_FILTER_SNAPSHOTS)) {
+ ret = need_whiteout_for_snapshot(trans, iter->btree_id, k->k.p);
+ if (unlikely(ret < 0))
+ return ret;
+
+ if (ret)
+ k->k.type = KEY_TYPE_whiteout;
+ }
+
+ /*
+ * Ensure that updates to cached btrees go to the key cache:
+ */
+ if (!(flags & BTREE_UPDATE_KEY_CACHE_RECLAIM) &&
+ !path->cached &&
+ !path->level &&
+ btree_id_cached(trans->c, path->btree_id)) {
+ if (!iter->key_cache_path ||
+ !iter->key_cache_path->should_be_locked ||
+ bpos_cmp(iter->key_cache_path->pos, k->k.p)) {
+ if (!iter->key_cache_path)
+ iter->key_cache_path =
+ bch2_path_get(trans, path->btree_id, path->pos, 1, 0,
+ BTREE_ITER_INTENT|
+ BTREE_ITER_CACHED, _THIS_IP_);
+
+ iter->key_cache_path =
+ bch2_btree_path_set_pos(trans, iter->key_cache_path, path->pos,
+ iter->flags & BTREE_ITER_INTENT,
+ _THIS_IP_);
+
+ ret = bch2_btree_path_traverse(trans, iter->key_cache_path,
+ BTREE_ITER_CACHED);
+ if (unlikely(ret))
+ return ret;
+
+ ck = (void *) iter->key_cache_path->l[0].b;
+
+ if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {
+ trace_trans_restart_key_cache_raced(trans->fn, _RET_IP_);
+ btree_trans_restart(trans);
+ return -EINTR;
+ }
+
+ iter->key_cache_path->should_be_locked = true;
+ }
+
+ path = iter->key_cache_path;
+ }
+
+ return bch2_trans_update_by_path(trans, path, k, flags);
}
void bch2_trans_commit_hook(struct btree_trans *trans,
__bch2_btree_insert(&trans, id, k));
}
-int bch2_btree_delete_at(struct btree_trans *trans,
- struct btree_iter *iter, unsigned update_flags)
+int bch2_btree_delete_extent_at(struct btree_trans *trans, struct btree_iter *iter,
+ unsigned len, unsigned update_flags)
{
struct bkey_i *k;
bkey_init(&k->k);
k->k.p = iter->pos;
+ bch2_key_resize(&k->k, len);
return bch2_trans_update(trans, iter, k, update_flags);
}
+int bch2_btree_delete_at(struct btree_trans *trans,
+ struct btree_iter *iter, unsigned update_flags)
+{
+ return bch2_btree_delete_extent_at(trans, iter, 0, update_flags);
+}
+
int bch2_btree_delete_range_trans(struct btree_trans *trans, enum btree_id id,
struct bpos start, struct bpos end,
- unsigned iter_flags,
+ unsigned update_flags,
u64 *journal_seq)
{
struct btree_iter iter;
struct bkey_s_c k;
int ret = 0;
- bch2_trans_iter_init(trans, &iter, id, start, BTREE_ITER_INTENT|iter_flags);
+ bch2_trans_iter_init(trans, &iter, id, start, BTREE_ITER_INTENT);
retry:
while ((bch2_trans_begin(trans),
(k = bch2_btree_iter_peek(&iter)).k) &&
break;
}
- ret = bch2_trans_update(trans, &iter, &delete, 0) ?:
+ ret = bch2_trans_update(trans, &iter, &delete, update_flags) ?:
bch2_trans_commit(trans, &disk_res, journal_seq,
- BTREE_INSERT_NOFAIL);
+ BTREE_INSERT_NOFAIL);
bch2_disk_reservation_put(trans->c, &disk_res);
if (ret)
break;
*/
int bch2_btree_delete_range(struct bch_fs *c, enum btree_id id,
struct bpos start, struct bpos end,
- unsigned iter_flags,
+ unsigned update_flags,
u64 *journal_seq)
{
return bch2_trans_do(c, NULL, journal_seq, 0,
bch2_btree_delete_range_trans(&trans, id, start, end,
- iter_flags, journal_seq));
+ update_flags, journal_seq));
+}
+
+int bch2_trans_log_msg(struct btree_trans *trans, const char *msg)
+{
+ unsigned len = strlen(msg);
+ unsigned u64s = DIV_ROUND_UP(len, sizeof(u64));
+ struct jset_entry_log *l;
+ int ret;
+
+ ret = darray_make_room(&trans->extra_journal_entries, jset_u64s(u64s));
+ if (ret)
+ return ret;
+
+ l = (void *) &darray_top(trans->extra_journal_entries);
+ l->entry.u64s = cpu_to_le16(u64s);
+ l->entry.btree_id = 0;
+ l->entry.level = 1;
+ l->entry.type = BCH_JSET_ENTRY_log;
+ l->entry.pad[0] = 0;
+ l->entry.pad[1] = 0;
+ l->entry.pad[2] = 0;
+ memcpy(l->d, msg, len);
+ while (len & 7)
+ l->d[len++] = '\0';
+
+ trans->extra_journal_entries.nr += jset_u64s(u64s);
+ return 0;
}
projects / bcachefs-tools-debian / blobdiff