#include "btree_gc.h"
#include "btree_io.h"
#include "btree_iter.h"
+#include "btree_key_cache.h"
#include "btree_locking.h"
#include "buckets.h"
#include "debug.h"
#include "journal.h"
#include "journal_reclaim.h"
#include "keylist.h"
+#include "recovery.h"
+#include "subvolume.h"
#include "replicas.h"
#include <linux/prefetch.h>
#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->level, r->level) ?:
+ bpos_cmp(l->k->k.p, r->k->k.p);
+}
+
+static inline struct btree_path_level *insert_l(struct btree_insert_entry *i)
+{
+ return i->path->l + i->level;
+}
+
static inline bool same_leaf_as_prev(struct btree_trans *trans,
- unsigned idx)
+ struct btree_insert_entry *i)
{
- return idx &&
- trans->updates[trans->updates_sorted[idx]].iter->l[0].b ==
- trans->updates[trans->updates_sorted[idx - 1]].iter->l[0].b;
+ return i != trans->updates &&
+ insert_l(&i[0])->b == insert_l(&i[-1])->b;
}
-#define trans_for_each_update_sorted(_trans, _i, _iter) \
- for (_iter = 0; \
- _iter < _trans->nr_updates && \
- (_i = _trans->updates + _trans->updates_sorted[_iter], 1); \
- _iter++)
+static inline bool same_leaf_as_next(struct btree_trans *trans,
+ struct btree_insert_entry *i)
+{
+ return i + 1 < trans->updates + trans->nr_updates &&
+ insert_l(&i[0])->b == insert_l(&i[1])->b;
+}
-inline void bch2_btree_node_lock_for_insert(struct bch_fs *c, struct btree *b,
- struct btree_iter *iter)
+static inline void bch2_btree_node_prep_for_write(struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b)
{
- bch2_btree_node_lock_write(b, iter);
+ struct bch_fs *c = trans->c;
+
+ if (path->cached)
+ return;
if (unlikely(btree_node_just_written(b)) &&
bch2_btree_post_write_cleanup(c, b))
- bch2_btree_iter_reinit_node(iter, b);
+ bch2_trans_node_reinit_iter(trans, b);
/*
* If the last bset has been written, or if it's gotten too big - start
* a new bset to insert into:
*/
if (want_new_bset(c, b))
- bch2_btree_init_next(c, b, iter);
+ bch2_btree_init_next(trans, b);
}
-static inline void btree_trans_sort_updates(struct btree_trans *trans)
+void bch2_btree_node_lock_for_insert(struct btree_trans *trans,
+ struct btree_path *path,
+ struct btree *b)
{
- struct btree_insert_entry *l, *r;
- unsigned nr = 0, pos;
-
- trans_for_each_update(trans, l) {
- for (pos = 0; pos < nr; pos++) {
- r = trans->updates + trans->updates_sorted[pos];
-
- if (btree_iter_cmp(l->iter, r->iter) <= 0)
- break;
- }
-
- memmove(&trans->updates_sorted[pos + 1],
- &trans->updates_sorted[pos],
- (nr - pos) * sizeof(trans->updates_sorted[0]));
-
- trans->updates_sorted[pos] = l - trans->updates;
- nr++;
- }
+ bch2_btree_node_lock_write(trans, path, b);
+ bch2_btree_node_prep_for_write(trans, path, b);
}
/* Inserting into a given leaf node (last stage of insert): */
/* Handle overwrites and do insert, for non extents: */
-bool bch2_btree_bset_insert_key(struct btree_iter *iter,
+bool bch2_btree_bset_insert_key(struct btree_trans *trans,
+ struct btree_path *path,
struct btree *b,
struct btree_node_iter *node_iter,
struct bkey_i *insert)
{
- const struct bkey_format *f = &b->format;
struct bkey_packed *k;
- unsigned clobber_u64s;
+ unsigned clobber_u64s = 0, new_u64s = 0;
EBUG_ON(btree_node_just_written(b));
EBUG_ON(bset_written(b, btree_bset_last(b)));
EBUG_ON(bkey_deleted(&insert->k) && bkey_val_u64s(&insert->k));
- EBUG_ON(bkey_cmp(bkey_start_pos(&insert->k), b->data->min_key) < 0 ||
- bkey_cmp(insert->k.p, b->data->max_key) > 0);
+ EBUG_ON(bpos_cmp(insert->k.p, b->data->min_key) < 0);
+ EBUG_ON(bpos_cmp(insert->k.p, b->data->max_key) > 0);
+ EBUG_ON(insert->k.u64s >
+ bch_btree_keys_u64s_remaining(trans->c, b));
k = bch2_btree_node_iter_peek_all(node_iter, b);
- if (k && !bkey_cmp_packed(b, k, &insert->k)) {
- BUG_ON(bkey_whiteout(k));
-
- if (!bkey_written(b, k) &&
- bkey_val_u64s(&insert->k) == bkeyp_val_u64s(f, k) &&
- !bkey_whiteout(&insert->k)) {
- k->type = insert->k.type;
- memcpy_u64s(bkeyp_val(f, k), &insert->v,
- bkey_val_u64s(&insert->k));
- return true;
- }
-
- btree_account_key_drop(b, k);
-
- if (bkey_whiteout(&insert->k)) {
- unsigned clobber_u64s = k->u64s, new_u64s = k->u64s;
+ if (k && bkey_cmp_left_packed(b, k, &insert->k.p))
+ k = NULL;
- k->type = KEY_TYPE_deleted;
+ /* @k is the key being overwritten/deleted, if any: */
+ EBUG_ON(k && bkey_deleted(k));
- if (k->needs_whiteout) {
- push_whiteout(iter->trans->c, b, k);
- k->needs_whiteout = false;
- }
-
- if (k >= btree_bset_last(b)->start) {
- bch2_bset_delete(b, k, clobber_u64s);
- new_u64s = 0;
- }
+ /* Deleting, but not found? nothing to do: */
+ if (bkey_deleted(&insert->k) && !k)
+ return false;
- bch2_btree_node_iter_fix(iter, b, node_iter, k,
- clobber_u64s, new_u64s);
- return true;
+ if (bkey_deleted(&insert->k)) {
+ /* Deleting: */
+ btree_account_key_drop(b, k);
+ k->type = KEY_TYPE_deleted;
- }
+ if (k->needs_whiteout)
+ push_whiteout(trans->c, b, insert->k.p);
+ k->needs_whiteout = false;
if (k >= btree_bset_last(b)->start) {
clobber_u64s = k->u64s;
- goto overwrite;
+ bch2_bset_delete(b, k, clobber_u64s);
+ goto fix_iter;
+ } else {
+ bch2_btree_path_fix_key_modified(trans, b, k);
}
+ return true;
+ }
+
+ if (k) {
+ /* Overwriting: */
+ btree_account_key_drop(b, k);
+ k->type = KEY_TYPE_deleted;
+
insert->k.needs_whiteout = k->needs_whiteout;
k->needs_whiteout = false;
- k->type = KEY_TYPE_deleted;
- /*
- * XXX: we should be able to do this without two calls to
- * bch2_btree_node_iter_fix:
- */
- bch2_btree_node_iter_fix(iter, b, node_iter, k,
- k->u64s, k->u64s);
- } else {
- /*
- * Deleting, but the key to delete wasn't found - nothing to do:
- */
- if (bkey_whiteout(&insert->k))
- return false;
- insert->k.needs_whiteout = false;
+ if (k >= btree_bset_last(b)->start) {
+ clobber_u64s = k->u64s;
+ goto overwrite;
+ } else {
+ bch2_btree_path_fix_key_modified(trans, b, k);
+ }
}
k = bch2_btree_node_iter_bset_pos(node_iter, b, bset_tree_last(b));
- clobber_u64s = 0;
overwrite:
bch2_bset_insert(b, node_iter, k, insert, clobber_u64s);
- bch2_btree_node_iter_fix(iter, b, node_iter, k,
- clobber_u64s, k->u64s);
+ new_u64s = k->u64s;
+fix_iter:
+ if (clobber_u64s != new_u64s)
+ bch2_btree_node_iter_fix(trans, path, b, node_iter, k,
+ clobber_u64s, new_u64s);
return true;
}
-static void __btree_node_flush(struct journal *j, struct journal_entry_pin *pin,
+static int __btree_node_flush(struct journal *j, struct journal_entry_pin *pin,
unsigned i, u64 seq)
{
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;
- 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));
- six_unlock_read(&b->lock);
+ 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;
+
+ 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;
}
-static void btree_node_flush0(struct journal *j, struct journal_entry_pin *pin, u64 seq)
+static int btree_node_flush0(struct journal *j, struct journal_entry_pin *pin, u64 seq)
{
return __btree_node_flush(j, pin, 0, seq);
}
-static void btree_node_flush1(struct journal *j, struct journal_entry_pin *pin, u64 seq)
+static int btree_node_flush1(struct journal *j, struct journal_entry_pin *pin, u64 seq)
{
return __btree_node_flush(j, pin, 1, seq);
}
-static inline void __btree_journal_key(struct btree_trans *trans,
- enum btree_id btree_id,
- struct bkey_i *insert)
-{
- struct journal *j = &trans->c->journal;
- u64 seq = trans->journal_res.seq;
- bool needs_whiteout = insert->k.needs_whiteout;
-
- /* ick */
- insert->k.needs_whiteout = false;
- bch2_journal_add_keys(j, &trans->journal_res,
- btree_id, insert);
- insert->k.needs_whiteout = needs_whiteout;
-
- bch2_journal_set_has_inode(j, &trans->journal_res,
- insert->k.p.inode);
-
- if (trans->journal_seq)
- *trans->journal_seq = seq;
-}
-
-void bch2_btree_journal_key(struct btree_trans *trans,
- struct btree_iter *iter,
- struct bkey_i *insert)
+inline void bch2_btree_add_journal_pin(struct bch_fs *c,
+ struct btree *b, u64 seq)
{
- struct bch_fs *c = trans->c;
- struct journal *j = &c->journal;
- struct btree *b = iter->l[0].b;
struct btree_write *w = btree_current_write(b);
- EBUG_ON(iter->level || b->level);
- EBUG_ON(trans->journal_res.ref !=
- !(trans->flags & BTREE_INSERT_JOURNAL_REPLAY));
-
- if (likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY))) {
- __btree_journal_key(trans, iter->btree_id, insert);
- btree_bset_last(b)->journal_seq =
- cpu_to_le64(trans->journal_res.seq);
- }
-
- if (unlikely(!journal_pin_active(&w->journal))) {
- u64 seq = likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY))
- ? trans->journal_res.seq
- : j->replay_journal_seq;
-
- bch2_journal_pin_add(j, seq, &w->journal,
- btree_node_write_idx(b) == 0
- ? btree_node_flush0
- : btree_node_flush1);
- }
-
- if (unlikely(!btree_node_dirty(b)))
- set_btree_node_dirty(b);
-}
-
-static void bch2_insert_fixup_key(struct btree_trans *trans,
- struct btree_insert_entry *insert)
-{
- struct btree_iter *iter = insert->iter;
- struct btree_iter_level *l = &iter->l[0];
-
- EBUG_ON(iter->level);
- EBUG_ON(insert->k->k.u64s >
- bch_btree_keys_u64s_remaining(trans->c, l->b));
-
- if (likely(bch2_btree_bset_insert_key(iter, l->b, &l->iter,
- insert->k)))
- bch2_btree_journal_key(trans, iter, insert->k);
+ bch2_journal_pin_add(&c->journal, seq, &w->journal,
+ btree_node_write_idx(b) == 0
+ ? btree_node_flush0
+ : btree_node_flush1);
}
/**
struct btree_insert_entry *insert)
{
struct bch_fs *c = trans->c;
- struct btree_iter *iter = insert->iter;
- struct btree *b = iter->l[0].b;
+ struct btree *b = insert_l(insert)->b;
struct bset_tree *t = bset_tree_last(b);
+ struct bset *i = bset(b, t);
int old_u64s = bset_u64s(t);
int old_live_u64s = b->nr.live_u64s;
int live_u64s_added, u64s_added;
- if (!btree_node_is_extents(b))
- bch2_insert_fixup_key(trans, insert);
- else
- bch2_insert_fixup_extent(trans, insert);
+ if (unlikely(!bch2_btree_bset_insert_key(trans, insert->path, b,
+ &insert_l(insert)->iter, insert->k)))
+ 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_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_btree_iter_reinit_node(iter, b);
-
- trace_btree_insert_key(c, b, insert->k);
+ bch2_trans_node_reinit_iter(trans, b);
}
+/* Cached btree updates: */
+
/* Normal update interface: */
static inline void btree_insert_entry_checks(struct btree_trans *trans,
struct btree_insert_entry *i)
{
- struct bch_fs *c = trans->c;
-
- BUG_ON(i->iter->level);
- BUG_ON(bkey_cmp(bkey_start_pos(&i->k->k), i->iter->pos));
- EBUG_ON((i->iter->flags & BTREE_ITER_IS_EXTENTS) &&
- bkey_cmp(i->k->k.p, i->iter->l[0].b->key.k.p) > 0);
-
- BUG_ON(debug_check_bkeys(c) &&
- !bkey_deleted(&i->k->k) &&
- bch2_bkey_invalid(c, bkey_i_to_s_c(i->k), i->iter->btree_id));
+ BUG_ON(bpos_cmp(i->k->k.p, i->path->pos));
+ BUG_ON(i->cached != i->path->cached);
+ BUG_ON(i->level != i->path->level);
+ BUG_ON(i->btree_id != i->path->btree_id);
+ EBUG_ON(!i->level &&
+ !(i->flags & BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE) &&
+ test_bit(JOURNAL_REPLAY_DONE, &trans->c->journal.flags) &&
+ i->k->k.p.snapshot &&
+ bch2_snapshot_internal_node(trans->c, i->k->k.p.snapshot));
}
static noinline int
-bch2_trans_journal_preres_get_cold(struct btree_trans *trans, unsigned u64s)
+bch2_trans_journal_preres_get_cold(struct btree_trans *trans, unsigned u64s,
+ unsigned long trace_ip)
{
struct bch_fs *c = trans->c;
int ret;
return ret;
if (!bch2_trans_relock(trans)) {
- trace_trans_restart_journal_preres_get(trans->ip);
+ trace_trans_restart_journal_preres_get(trans->fn, trace_ip);
return -EINTR;
}
return ret == -EAGAIN ? BTREE_INSERT_NEED_JOURNAL_RES : ret;
}
-static enum btree_insert_ret
+#define JSET_ENTRY_LOG_U64s 4
+
+static noinline 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;
+}
+
+static inline enum btree_insert_ret
btree_key_can_insert(struct btree_trans *trans,
- struct btree_insert_entry *insert,
- unsigned *u64s)
+ struct btree *b,
+ unsigned u64s)
{
struct bch_fs *c = trans->c;
- struct btree *b = insert->iter->l[0].b;
- static enum btree_insert_ret ret;
- if (unlikely(btree_node_fake(b)))
+ if (!bch2_btree_node_insert_fits(c, b, u64s))
return BTREE_INSERT_BTREE_NODE_FULL;
- ret = !btree_node_is_extents(b)
- ? BTREE_INSERT_OK
- : bch2_extent_can_insert(trans, insert, u64s);
- if (ret)
- return ret;
+ return BTREE_INSERT_OK;
+}
- if (*u64s > bch_btree_keys_u64s_remaining(c, b))
- return BTREE_INSERT_BTREE_NODE_FULL;
+static enum btree_insert_ret
+btree_key_can_insert_cached(struct btree_trans *trans,
+ struct btree_path *path,
+ unsigned u64s)
+{
+ struct bch_fs *c = trans->c;
+ struct bkey_cached *ck = (void *) path->l[0].b;
+ unsigned new_u64s;
+ struct bkey_i *new_k;
- return BTREE_INSERT_OK;
+ EBUG_ON(path->level);
+
+ if (!test_bit(BKEY_CACHED_DIRTY, &ck->flags) &&
+ bch2_btree_key_cache_must_wait(c) &&
+ !(trans->flags & BTREE_INSERT_JOURNAL_RECLAIM))
+ return BTREE_INSERT_NEED_JOURNAL_RECLAIM;
+
+ /*
+ * bch2_varint_decode can read past the end of the buffer by at most 7
+ * bytes (it won't be used):
+ */
+ u64s += 1;
+
+ if (u64s <= ck->u64s)
+ return BTREE_INSERT_OK;
+
+ new_u64s = roundup_pow_of_two(u64s);
+ new_k = krealloc(ck->k, new_u64s * sizeof(u64), GFP_NOFS);
+ if (!new_k) {
+ bch_err(c, "error allocating memory for key cache key, btree %s u64s %u",
+ bch2_btree_ids[path->btree_id], new_u64s);
+ return -ENOMEM;
+ }
+
+ ck->u64s = new_u64s;
+ ck->k = new_k;
+ /*
+ * 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);
+ /*
+ * 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 *insert)
+ struct btree_insert_entry *i)
+{
+ struct bch_fs *c = trans->c;
+ struct journal *j = &c->journal;
+
+ EBUG_ON(trans->journal_res.ref !=
+ !(trans->flags & BTREE_INSERT_JOURNAL_REPLAY));
+
+ i->k->k.needs_whiteout = false;
+
+ if (!i->cached)
+ btree_insert_key_leaf(trans, i);
+ else
+ bch2_btree_insert_key_cached(trans, i->path, i->k);
+
+ if (likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY))) {
+ bch2_journal_add_keys(j, &trans->journal_res,
+ i->btree_id,
+ i->level,
+ i->k);
+
+ if (trans->journal_seq)
+ *trans->journal_seq = trans->journal_res.seq;
+ }
+}
+
+/* Triggers: */
+
+static int run_one_mem_trigger(struct btree_trans *trans,
+ struct btree_insert_entry *i,
+ unsigned flags)
{
- btree_insert_key_leaf(trans, insert);
+ struct bkey_s_c old = { &i->old_k, i->old_v };
+ struct bkey_i *new = i->k;
+ int ret;
+
+ if (unlikely(flags & BTREE_TRIGGER_NORUN))
+ return 0;
+
+ if (!btree_node_type_needs_gc(i->btree_id))
+ return 0;
+
+ 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 };
+
+ _deleted.p = i->path->pos;
+
+ 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 inline bool update_has_trans_triggers(struct btree_insert_entry *i)
+static int run_one_trans_trigger(struct btree_trans *trans, struct btree_insert_entry *i,
+ bool overwrite)
{
- return BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->iter->btree_id);
+ struct bkey_s_c old = { &i->old_k, i->old_v };
+ int ret = 0;
+
+ if ((i->flags & BTREE_TRIGGER_NORUN) ||
+ !(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)))
+ return 0;
+
+ if (!overwrite) {
+ if (i->insert_trigger_run)
+ return 0;
+
+ BUG_ON(i->overwrite_trigger_run);
+ i->insert_trigger_run = true;
+ } else {
+ if (i->overwrite_trigger_run)
+ return 0;
+
+ BUG_ON(!i->insert_trigger_run);
+ i->overwrite_trigger_run = true;
+ }
+
+ if (overwrite) {
+ ret = bch2_trans_mark_old(trans, old, i->flags);
+ } else if (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;
+ ret = bch2_trans_mark_key(trans, old, i->k,
+ BTREE_TRIGGER_INSERT|BTREE_TRIGGER_OVERWRITE|i->flags);
+ } else {
+ ret = bch2_trans_mark_new(trans, i->k, i->flags);
+ }
+
+ if (ret == -EINTR)
+ trace_trans_restart_mark(trans->fn, _RET_IP_,
+ i->btree_id, &i->path->pos);
+ return ret ?: 1;
}
-static inline bool update_has_nontrans_triggers(struct btree_insert_entry *i)
+static int run_btree_triggers(struct btree_trans *trans, enum btree_id btree_id,
+ struct btree_insert_entry *btree_id_start)
{
- return (BTREE_NODE_TYPE_HAS_TRIGGERS &
- ~BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS) &
- (1U << i->iter->btree_id);
+ struct btree_insert_entry *i;
+ bool trans_trigger_run;
+ int ret, overwrite;
+
+ for (overwrite = 0; overwrite < 2; 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 noinline void bch2_btree_iter_unlock_noinline(struct btree_iter *iter)
+static int bch2_trans_commit_run_triggers(struct btree_trans *trans)
{
- __bch2_btree_iter_unlock(iter);
+ 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;
- unsigned mark_flags = trans->flags & BTREE_INSERT_BUCKET_INVALIDATE
- ? BCH_BUCKET_MARK_BUCKET_INVALIDATE
- : 0;
+ int ret = 0;
- if (unlikely(trans->flags & BTREE_INSERT_NOMARK))
- return;
+ trans_for_each_update(trans, i) {
+ /*
+ * XXX: synchronization of cached update triggers with gc
+ * XXX: synchronization of interior node updates with gc
+ */
+ BUG_ON(i->cached || i->level);
- 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 (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
bch2_trans_commit_write_locked(struct btree_trans *trans,
- struct btree_insert_entry **stopped_at)
+ struct btree_insert_entry **stopped_at,
+ unsigned long trace_ip)
{
struct bch_fs *c = trans->c;
- struct bch_fs_usage *fs_usage = NULL;
struct btree_insert_entry *i;
- unsigned mark_flags = trans->flags & BTREE_INSERT_BUCKET_INVALIDATE
- ? BCH_BUCKET_MARK_BUCKET_INVALIDATE
- : 0;
- unsigned iter, u64s = 0;
+ struct btree_trans_commit_hook *h;
+ unsigned u64s = 0;
bool marking = false;
int ret;
if (race_fault()) {
- trace_trans_restart_fault_inject(trans->ip);
+ trace_trans_restart_fault_inject(trans->fn, trace_ip);
+ trans->restarted = true;
return -EINTR;
}
prefetch(&trans->c->journal.flags);
- trans_for_each_update_sorted(trans, i, iter) {
+ h = trans->hooks;
+ while (h) {
+ ret = h->fn(trans, h);
+ if (ret)
+ return ret;
+ h = h->next;
+ }
+
+ trans_for_each_update(trans, i) {
/* Multiple inserts might go to same leaf: */
- if (!same_leaf_as_prev(trans, iter))
+ if (!same_leaf_as_prev(trans, i))
u64s = 0;
u64s += i->k->k.u64s;
- ret = btree_key_can_insert(trans, i, &u64s);
+ ret = !i->cached
+ ? btree_key_can_insert(trans, insert_l(i)->b, u64s)
+ : btree_key_can_insert_cached(trans, i->path, u64s);
if (ret) {
*stopped_at = i;
return ret;
}
- if (btree_node_type_needs_gc(i->iter->btree_id))
+ if (btree_node_type_needs_gc(i->bkey_type))
marking = true;
- }
- if (marking) {
- percpu_down_read(&c->mark_lock);
- fs_usage = bch2_fs_usage_scratch_get(c);
+ /*
+ * 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(c, i->btree_id, i->level, i->k->k.p);
+
+ if (j_k && !bpos_cmp(j_k->k.p, i->k->k.p)) {
+ i->old_k = j_k->k;
+ i->old_v = &j_k->v;
+ }
+ }
}
/*
ret = bch2_trans_journal_res_get(trans,
JOURNAL_RES_GET_NONBLOCK);
if (ret)
- goto err;
+ return ret;
+
+ if (unlikely(trans->journal_transaction_names))
+ journal_transaction_name(trans);
+ } else {
+ trans->journal_res.seq = c->journal.replay_journal_seq;
+ }
+
+ if (unlikely(trans->extra_journal_entry_u64s)) {
+ memcpy_u64s_small(journal_res_entry(&c->journal, &trans->journal_res),
+ trans->extra_journal_entries,
+ trans->extra_journal_entry_u64s);
+
+ trans->journal_res.offset += trans->extra_journal_entry_u64s;
+ trans->journal_res.u64s -= trans->extra_journal_entry_u64s;
}
/*
*/
if (!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY)) {
- if (journal_seq_verify(c))
+ if (bch2_journal_seq_verify)
trans_for_each_update(trans, i)
i->k->k.version.lo = trans->journal_res.seq;
- else if (inject_invalid_keys(c))
+ else if (bch2_inject_invalid_keys)
trans_for_each_update(trans, i)
i->k->k.version = MAX_VERSION;
}
- /* Must be called under mark_lock: */
- if (marking && trans->fs_usage_deltas &&
- bch2_replicas_delta_list_apply(c, fs_usage,
- trans->fs_usage_deltas)) {
- ret = BTREE_INSERT_NEED_MARK_REPLICAS;
- goto err;
- }
+ if (trans->fs_usage_deltas &&
+ bch2_trans_fs_usage_apply(trans, trans->fs_usage_deltas))
+ return BTREE_INSERT_NEED_MARK_REPLICAS;
trans_for_each_update(trans, i)
- if (likely(!(trans->flags & BTREE_INSERT_NOMARK)) &&
- update_has_nontrans_triggers(i))
- bch2_mark_update(trans, i, fs_usage, mark_flags);
-
- if (marking)
- bch2_trans_fs_usage_apply(trans, fs_usage);
+ 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);
-err:
- if (marking) {
- bch2_fs_usage_scratch_put(c, fs_usage);
- percpu_up_read(&c->mark_lock);
- }
return ret;
}
+static inline void path_upgrade_readers(struct btree_trans *trans, struct btree_path *path)
+{
+ unsigned l;
+
+ for (l = 0; l < BTREE_MAX_DEPTH; l++)
+ if (btree_node_read_locked(path, l))
+ BUG_ON(!bch2_btree_node_upgrade(trans, path, l));
+}
+
+static inline void upgrade_readers(struct btree_trans *trans, struct btree_path *path)
+{
+ struct btree *b = path_l(path)->b;
+
+ do {
+ if (path->nodes_locked &&
+ path->nodes_locked != path->nodes_intent_locked)
+ path_upgrade_readers(trans, path);
+ } while ((path = prev_btree_path(trans, path)) &&
+ path_l(path)->b == b);
+}
+
/*
- * Get journal reservation, take write locks, and attempt to do btree update(s):
+ * Check for nodes that we have both read and intent locks on, and upgrade the
+ * readers to intent:
*/
-static inline int do_bch2_trans_commit(struct btree_trans *trans,
- struct btree_insert_entry **stopped_at)
+static inline void normalize_read_intent_locks(struct btree_trans *trans)
{
- struct btree_insert_entry *i;
- struct btree_iter *iter;
- unsigned idx;
- int ret;
-
- trans_for_each_update(trans, i)
- BUG_ON(!btree_node_intent_locked(i->iter, 0));
+ struct btree_path *path;
+ unsigned i, nr_read = 0, nr_intent = 0;
+
+ trans_for_each_path_inorder(trans, path, i) {
+ struct btree_path *next = i + 1 < trans->nr_sorted
+ ? trans->paths + trans->sorted[i + 1]
+ : NULL;
+
+ if (path->nodes_locked) {
+ if (path->nodes_intent_locked)
+ nr_intent++;
+ else
+ nr_read++;
+ }
- ret = bch2_journal_preres_get(&trans->c->journal,
- &trans->journal_preres, trans->journal_preres_u64s,
- JOURNAL_RES_GET_NONBLOCK);
- if (unlikely(ret == -EAGAIN))
- ret = bch2_trans_journal_preres_get_cold(trans,
- trans->journal_preres_u64s);
- if (unlikely(ret))
- return ret;
+ if (!next || path_l(path)->b != path_l(next)->b) {
+ if (nr_read && nr_intent)
+ upgrade_readers(trans, path);
- /*
- * 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);
+ nr_read = nr_intent = 0;
}
}
- 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);
+ bch2_trans_verify_locks(trans);
+}
- trans_for_each_update_sorted(trans, i, idx)
- if (!same_leaf_as_prev(trans, idx))
- bch2_btree_node_lock_for_insert(trans->c,
- i->iter->l[0].b, i->iter);
+static inline bool have_conflicting_read_lock(struct btree_trans *trans, struct btree_path *pos)
+{
+ struct btree_path *path;
+ unsigned i;
- ret = bch2_trans_commit_write_locked(trans, stopped_at);
+ trans_for_each_path_inorder(trans, path, i) {
+ //if (path == pos)
+ // break;
- trans_for_each_update_sorted(trans, i, idx)
- if (!same_leaf_as_prev(trans, idx))
- bch2_btree_node_unlock_write_inlined(i->iter->l[0].b,
- i->iter);
+ if (path->nodes_locked != path->nodes_intent_locked &&
+ !bch2_btree_path_upgrade(trans, path, path->level + 1))
+ return true;
+ }
+
+ return false;
+}
+
+static inline int trans_lock_write(struct btree_trans *trans)
+{
+ struct btree_insert_entry *i;
+
+ trans_for_each_update(trans, i) {
+ if (same_leaf_as_prev(trans, i))
+ continue;
+
+ if (!six_trylock_write(&insert_l(i)->b->c.lock)) {
+ if (have_conflicting_read_lock(trans, i->path))
+ goto fail;
+
+ 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);
+ }
+
+ return 0;
+fail:
+ while (--i >= trans->updates) {
+ if (same_leaf_as_prev(trans, i))
+ continue;
+
+ bch2_btree_node_unlock_write_inlined(trans, i->path, insert_l(i)->b);
+ }
+
+ trace_trans_restart_would_deadlock_write(trans->fn);
+ return btree_trans_restart(trans);
+}
+
+static noinline void bch2_drop_overwrites_from_journal(struct btree_trans *trans)
+{
+ struct btree_insert_entry *i;
+
+ trans_for_each_update(trans, i)
+ bch2_journal_key_overwritten(trans->c, i->btree_id, i->level, i->k->k.p);
+}
+
+/*
+ * 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,
+ unsigned long trace_ip)
+{
+ struct bch_fs *c = trans->c;
+ struct btree_insert_entry *i;
+ int ret, u64s_delta = 0;
+
+ 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) {
+ struct printbuf buf = PRINTBUF;
+
+ bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(i->k));
+ bch2_fs_fatal_error(c, "invalid bkey %s on insert from %s -> %ps: %s\n",
+ buf.buf, trans->fn, (void *) i->ip_allocated, invalid);
+ printbuf_exit(&buf);
+ return -EINVAL;
+ }
+ btree_insert_entry_checks(trans, i);
+ }
+
+ trans_for_each_update(trans, i) {
+ if (i->cached)
+ continue;
+
+ u64s_delta += !bkey_deleted(&i->k->k) ? i->k->k.u64s : 0;
+ u64s_delta -= i->old_btree_u64s;
+
+ if (!same_leaf_as_next(trans, i)) {
+ if (u64s_delta <= 0) {
+ ret = bch2_foreground_maybe_merge(trans, i->path,
+ i->level, trans->flags);
+ if (unlikely(ret))
+ return ret;
+ }
+
+ 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));
+ if (unlikely(ret == -EAGAIN))
+ ret = bch2_trans_journal_preres_get_cold(trans,
+ trans->journal_preres_u64s, trace_ip);
+ if (unlikely(ret))
+ return ret;
+
+ normalize_read_intent_locks(trans);
+
+ ret = trans_lock_write(trans);
+ if (unlikely(ret))
+ return ret;
+
+ ret = bch2_trans_commit_write_locked(trans, stopped_at, trace_ip);
+
+ if (!ret && unlikely(!test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags)))
+ bch2_drop_overwrites_from_journal(trans);
+
+ trans_for_each_update(trans, i)
+ if (!same_leaf_as_prev(trans, i))
+ bch2_btree_node_unlock_write_inlined(trans, i->path,
+ insert_l(i)->b);
+
+ if (!ret && trans->journal_pin)
+ bch2_journal_pin_add(&c->journal, trans->journal_res.seq,
+ trans->journal_pin, NULL);
/*
* 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);
+ bch2_journal_res_put(&c->journal, &trans->journal_res);
if (unlikely(ret))
return ret;
- if (trans->flags & BTREE_INSERT_NOUNLOCK)
- trans->nounlock = true;
+ bch2_trans_downgrade(trans);
- 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;
+ return 0;
+}
- trans_for_each_update(trans, i)
- bch2_btree_iter_downgrade(i->iter);
+static int journal_reclaim_wait_done(struct bch_fs *c)
+{
+ int ret = bch2_journal_error(&c->journal) ?:
+ !bch2_btree_key_cache_must_wait(c);
- return 0;
+ if (!ret)
+ journal_reclaim_kick(&c->journal);
+ return ret;
}
static noinline
int bch2_trans_commit_error(struct btree_trans *trans,
struct btree_insert_entry *i,
- int ret)
+ int ret, unsigned long trace_ip)
{
struct bch_fs *c = trans->c;
- unsigned flags = trans->flags;
-
- /*
- * BTREE_INSERT_NOUNLOCK means don't unlock _after_ successful btree
- * update; if we haven't done anything yet it doesn't apply
- */
- flags &= ~BTREE_INSERT_NOUNLOCK;
switch (ret) {
case BTREE_INSERT_BTREE_NODE_FULL:
- ret = bch2_btree_split_leaf(c, i->iter, flags);
-
- /*
- * if the split succeeded without dropping locks the insert will
- * still be atomic (what the caller peeked() and is overwriting
- * won't have changed)
- */
-#if 0
- /*
- * XXX:
- * split -> btree node merging (of parent node) might still drop
- * locks when we're not passing it BTREE_INSERT_NOUNLOCK
- *
- * we don't want to pass BTREE_INSERT_NOUNLOCK to split as that
- * will inhibit merging - but we don't have a reliable way yet
- * (do we?) of checking if we dropped locks in this path
- */
+ ret = bch2_btree_split_leaf(trans, i->path, trans->flags);
if (!ret)
- goto retry;
-#endif
+ return 0;
- /*
- * don't care if we got ENOSPC because we told split it
- * couldn't block:
- */
- if (!ret ||
- ret == -EINTR ||
- (flags & BTREE_INSERT_NOUNLOCK)) {
- trace_trans_restart_btree_node_split(trans->ip);
- ret = -EINTR;
- }
- break;
- case BTREE_INSERT_ENOSPC:
- ret = -ENOSPC;
+ if (ret == -EINTR)
+ trace_trans_restart_btree_node_split(trans->fn, trace_ip,
+ i->btree_id, &i->path->pos);
break;
case BTREE_INSERT_NEED_MARK_REPLICAS:
bch2_trans_unlock(trans);
- trans_for_each_update(trans, i) {
- ret = bch2_mark_bkey_replicas(c, bkey_i_to_s_c(i->k));
- if (ret)
- return ret;
- }
+ ret = bch2_replicas_delta_list_mark(c, trans->fs_usage_deltas);
+ if (ret)
+ break;
if (bch2_trans_relock(trans))
return 0;
- trace_trans_restart_mark_replicas(trans->ip);
+ trace_trans_restart_mark_replicas(trans->fn, trace_ip);
ret = -EINTR;
break;
case BTREE_INSERT_NEED_JOURNAL_RES:
bch2_trans_unlock(trans);
+ if ((trans->flags & BTREE_INSERT_JOURNAL_RECLAIM) &&
+ !(trans->flags & BTREE_INSERT_JOURNAL_RESERVED)) {
+ trans->restarted = true;
+ ret = -EAGAIN;
+ break;
+ }
+
ret = bch2_trans_journal_res_get(trans, JOURNAL_RES_GET_CHECK);
if (ret)
- return ret;
+ break;
if (bch2_trans_relock(trans))
return 0;
- trace_trans_restart_journal_res_get(trans->ip);
+ trace_trans_restart_journal_res_get(trans->fn, trace_ip);
+ ret = -EINTR;
+ break;
+ case BTREE_INSERT_NEED_JOURNAL_RECLAIM:
+ bch2_trans_unlock(trans);
+
+ trace_trans_blocked_journal_reclaim(trans->fn, trace_ip);
+
+ wait_event_freezable(c->journal.reclaim_wait,
+ (ret = journal_reclaim_wait_done(c)));
+ if (ret < 0)
+ break;
+
+ if (bch2_trans_relock(trans))
+ return 0;
+
+ trace_trans_restart_journal_reclaim(trans->fn, trace_ip);
ret = -EINTR;
break;
default:
break;
}
- if (ret == -EINTR) {
- int ret2 = bch2_btree_iter_traverse_all(trans);
-
- if (ret2) {
- trace_trans_restart_traverse(trans->ip);
- return ret2;
- }
-
- trace_trans_restart_atomic(trans->ip);
- }
+ BUG_ON((ret == EINTR || ret == -EAGAIN) && !trans->restarted);
+ BUG_ON(ret == -ENOSPC &&
+ !(trans->flags & BTREE_INSERT_NOWAIT) &&
+ (trans->flags & BTREE_INSERT_NOFAIL));
return ret;
}
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);
if (ret)
return ret;
+ if (!bch2_trans_relock(trans))
+ return -EINTR;
+
percpu_ref_get(&c->writes);
return 0;
}
+/*
+ * 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 bch_fs *c = trans->c;
+ struct btree_insert_entry *i;
+ int ret = 0;
+
+ trans_for_each_update(trans, i) {
+ ret = bch2_journal_key_insert(c, i->btree_id, i->level, i->k);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
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 u64s;
int ret = 0;
- if (!trans->nr_updates)
- goto out_noupdates;
+ if (!trans->nr_updates &&
+ !trans->extra_journal_entry_u64s)
+ goto out_reset;
if (trans->flags & BTREE_INSERT_GC_LOCK_HELD)
- lockdep_assert_held(&trans->c->gc_lock);
+ lockdep_assert_held(&c->gc_lock);
- memset(&trans->journal_preres, 0, sizeof(trans->journal_preres));
+ ret = bch2_trans_commit_run_triggers(trans);
+ if (ret)
+ goto out_reset;
- trans->journal_u64s = 0;
- trans->journal_preres_u64s = 0;
+ 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(&trans->c->writes))) {
+ unlikely(!percpu_ref_tryget(&c->writes))) {
ret = bch2_trans_commit_get_rw_cold(trans);
if (ret)
- return ret;
+ goto out_reset;
}
- /*
- * note: running triggers will append more updates to the list of
- * updates as we're walking it:
- */
+ 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);
+
+ if (trans->journal_transaction_names)
+ trans->journal_u64s += JSET_ENTRY_LOG_U64s;
+
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);
- ret = -EINTR;
+ BUG_ON(!i->path->should_be_locked);
+
+ if (unlikely(!bch2_btree_path_upgrade(trans, i->path, i->level + 1))) {
+ trace_trans_restart_upgrade(trans->fn, _RET_IP_,
+ i->btree_id, &i->path->pos);
+ ret = btree_trans_restart(trans);
goto out;
}
- 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);
- goto out;
- }
- }
+ BUG_ON(!btree_node_intent_locked(i->path, i->level));
u64s = jset_u64s(i->k->k.u64s);
- if (0)
+ if (i->cached &&
+ likely(!(trans->flags & BTREE_INSERT_JOURNAL_REPLAY)))
trans->journal_preres_u64s += u64s;
trans->journal_u64s += u64s;
}
+
+ if (trans->extra_journal_res) {
+ ret = bch2_disk_reservation_add(c, trans->disk_res,
+ trans->extra_journal_res,
+ (trans->flags & BTREE_INSERT_NOFAIL)
+ ? BCH_DISK_RESERVATION_NOFAIL : 0);
+ if (ret)
+ goto err;
+ }
retry:
+ BUG_ON(trans->restarted);
memset(&trans->journal_res, 0, sizeof(trans->journal_res));
- ret = do_bch2_trans_commit(trans, &i);
+ ret = do_bch2_trans_commit(trans, &i, _RET_IP_);
/* make sure we didn't drop or screw up locks: */
- bch2_btree_trans_verify_locks(trans);
+ bch2_trans_verify_locks(trans);
if (ret)
goto err;
out:
- bch2_journal_preres_put(&trans->c->journal, &trans->journal_preres);
+ bch2_journal_preres_put(&c->journal, &trans->journal_preres);
if (likely(!(trans->flags & BTREE_INSERT_NOCHECK_RW)))
- percpu_ref_put(&trans->c->writes);
-out_noupdates:
- trans_for_each_iter_all(trans, iter)
- iter->flags &= ~BTREE_ITER_KEEP_UNTIL_COMMIT;
+ percpu_ref_put(&c->writes);
+out_reset:
+ trans_for_each_update(trans, i)
+ bch2_path_put(trans, i->path, true);
- if (!ret) {
- bch2_trans_unlink_iters(trans);
- trans->iters_touched = 0;
- }
- trans->nr_updates = 0;
- trans->mem_top = 0;
+ trans->extra_journal_res = 0;
+ trans->nr_updates = 0;
+ trans->hooks = NULL;
+ trans->extra_journal_entries = NULL;
+ trans->extra_journal_entry_u64s = 0;
if (trans->fs_usage_deltas) {
trans->fs_usage_deltas->used = 0;
return ret;
err:
- ret = bch2_trans_commit_error(trans, i, ret);
+ ret = bch2_trans_commit_error(trans, i, ret, _RET_IP_);
if (ret)
goto out;
goto retry;
}
-static int __bch2_btree_insert(struct btree_trans *trans,
- enum btree_id id, struct bkey_i *k)
+static int check_pos_snapshot_overwritten(struct btree_trans *trans,
+ enum btree_id id,
+ struct bpos pos)
+{
+ struct bch_fs *c = trans->c;
+ struct btree_iter iter;
+ 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;
+
+ bch2_trans_iter_init(trans, &iter, id, pos,
+ BTREE_ITER_NOT_EXTENTS|
+ BTREE_ITER_ALL_SNAPSHOTS);
+ while (1) {
+ k = bch2_btree_iter_prev(&iter);
+ ret = bkey_err(k);
+ if (ret)
+ break;
+
+ if (!k.k)
+ break;
+
+ if (bkey_cmp(pos, k.k->p))
+ break;
+
+ if (bch2_snapshot_is_ancestor(c, k.k->p.snapshot, pos.snapshot)) {
+ ret = 1;
+ break;
+ }
+ }
+ bch2_trans_iter_exit(trans, &iter);
+
+ return ret;
+}
+
+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;
+ struct bpos start = bkey_start_pos(&insert->k);
+ struct bkey_i *update;
+ struct bkey_s_c k;
+ enum btree_id btree_id = orig_iter->btree_id;
+ int ret = 0, compressed_sectors;
+
+ bch2_trans_iter_init(trans, &iter, btree_id, start,
+ BTREE_ITER_INTENT|
+ BTREE_ITER_WITH_UPDATES|
+ BTREE_ITER_NOT_EXTENTS);
+ k = bch2_btree_iter_peek_upto(&iter, POS(insert->k.p.inode, U64_MAX));
+ if ((ret = bkey_err(k)))
+ goto err;
+ if (!k.k)
+ goto out;
+
+ if (bch2_bkey_maybe_mergable(k.k, &insert->k)) {
+ /*
+ * We can't merge extents if they belong to interior snapshot
+ * tree nodes, and there's a snapshot in which one extent is
+ * visible and the other is not - i.e. if visibility is
+ * different.
+ *
+ * Instead of checking if visibilitiy of the two extents is
+ * different, for now we just check if either has been
+ * overwritten:
+ */
+ ret = check_pos_snapshot_overwritten(trans, btree_id, insert->k.p);
+ if (ret < 0)
+ goto err;
+ if (ret)
+ goto nomerge1;
+
+ ret = check_pos_snapshot_overwritten(trans, btree_id, k.k->p);
+ if (ret < 0)
+ goto err;
+ if (ret)
+ goto nomerge1;
+
+ update = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ if ((ret = PTR_ERR_OR_ZERO(update)))
+ goto err;
+
+ bkey_reassemble(update, k);
+
+ if (bch2_bkey_merge(c, bkey_i_to_s(update), bkey_i_to_s_c(insert))) {
+ ret = bch2_btree_delete_at(trans, &iter, flags);
+ if (ret)
+ goto err;
+
+ insert = update;
+ goto next;
+ }
+ }
+nomerge1:
+ ret = 0;
+ if (!bkey_cmp(k.k->p, start))
+ goto next;
+
+ while (bkey_cmp(insert->k.p, bkey_start_pos(k.k)) > 0) {
+ bool front_split = bkey_cmp(bkey_start_pos(k.k), start) < 0;
+ bool back_split = bkey_cmp(k.k->p, insert->k.p) > 0;
+
+ /*
+ * If we're going to be splitting a compressed extent, note it
+ * so that __bch2_trans_commit() can increase our disk
+ * reservation:
+ */
+ if (((front_split && back_split) ||
+ ((front_split || back_split) && k.k->p.snapshot != insert->k.p.snapshot)) &&
+ (compressed_sectors = bch2_bkey_sectors_compressed(k)))
+ trans->extra_journal_res += compressed_sectors;
+
+ if (front_split) {
+ update = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ if ((ret = PTR_ERR_OR_ZERO(update)))
+ goto err;
+
+ bkey_reassemble(update, k);
+
+ bch2_cut_back(start, update);
+
+ bch2_trans_iter_init(trans, &update_iter, btree_id, update->k.p,
+ BTREE_ITER_NOT_EXTENTS|
+ BTREE_ITER_ALL_SNAPSHOTS|
+ BTREE_ITER_INTENT);
+ ret = bch2_btree_iter_traverse(&update_iter) ?:
+ bch2_trans_update(trans, &update_iter, update,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE|
+ flags);
+ bch2_trans_iter_exit(trans, &update_iter);
+
+ if (ret)
+ goto err;
+ }
+
+ if (k.k->p.snapshot != insert->k.p.snapshot &&
+ (front_split || back_split)) {
+ update = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ if ((ret = PTR_ERR_OR_ZERO(update)))
+ goto err;
+
+ bkey_reassemble(update, k);
+
+ bch2_cut_front(start, update);
+ bch2_cut_back(insert->k.p, update);
+
+ bch2_trans_iter_init(trans, &update_iter, btree_id, update->k.p,
+ BTREE_ITER_NOT_EXTENTS|
+ BTREE_ITER_ALL_SNAPSHOTS|
+ BTREE_ITER_INTENT);
+ ret = bch2_btree_iter_traverse(&update_iter) ?:
+ bch2_trans_update(trans, &update_iter, update,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE|
+ flags);
+ bch2_trans_iter_exit(trans, &update_iter);
+ if (ret)
+ goto err;
+ }
+
+ if (bkey_cmp(k.k->p, insert->k.p) <= 0) {
+ update = bch2_trans_kmalloc(trans, sizeof(*update));
+ if ((ret = PTR_ERR_OR_ZERO(update)))
+ goto err;
+
+ bkey_init(&update->k);
+ update->k.p = k.k->p;
+
+ if (insert->k.p.snapshot != k.k->p.snapshot) {
+ update->k.p.snapshot = insert->k.p.snapshot;
+ update->k.type = KEY_TYPE_whiteout;
+ }
+
+ bch2_trans_iter_init(trans, &update_iter, btree_id, update->k.p,
+ BTREE_ITER_NOT_EXTENTS|
+ BTREE_ITER_INTENT);
+ ret = bch2_btree_iter_traverse(&update_iter) ?:
+ bch2_trans_update(trans, &update_iter, update,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE|
+ flags);
+ bch2_trans_iter_exit(trans, &update_iter);
+
+ if (ret)
+ goto err;
+ }
+
+ if (back_split) {
+ update = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ if ((ret = PTR_ERR_OR_ZERO(update)))
+ goto err;
+
+ bkey_reassemble(update, k);
+ bch2_cut_front(insert->k.p, update);
+
+ ret = bch2_trans_update_by_path(trans, iter.path, update,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE|
+ flags);
+ if (ret)
+ goto err;
+ goto out;
+ }
+next:
+ 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)
+ goto out;
+ }
+
+ if (bch2_bkey_maybe_mergable(&insert->k, k.k)) {
+ ret = check_pos_snapshot_overwritten(trans, btree_id, insert->k.p);
+ if (ret < 0)
+ goto err;
+ if (ret)
+ goto nomerge2;
+
+ ret = check_pos_snapshot_overwritten(trans, btree_id, k.k->p);
+ if (ret < 0)
+ goto err;
+ if (ret)
+ goto nomerge2;
+
+ bch2_bkey_merge(c, bkey_i_to_s(insert), k);
+ }
+nomerge2:
+ ret = 0;
+out:
+ if (!bkey_deleted(&insert->k)) {
+ /*
+ * Rewinding iterators is expensive: get a new one and the one
+ * that points to the start of insert will be cloned from:
+ */
+ bch2_trans_iter_exit(trans, &iter);
+ bch2_trans_iter_init(trans, &iter, btree_id, insert->k.p,
+ BTREE_ITER_NOT_EXTENTS|
+ BTREE_ITER_INTENT);
+ ret = bch2_btree_iter_traverse(&iter) ?:
+ bch2_trans_update(trans, &iter, insert, flags);
+ }
+err:
+ bch2_trans_iter_exit(trans, &iter);
+
+ return ret;
+}
+
+/*
+ * When deleting, check if we need to emit a whiteout (because we're overwriting
+ * something in an ancestor snapshot)
+ */
+static int need_whiteout_for_snapshot(struct btree_trans *trans,
+ enum btree_id btree_id, struct bpos pos)
+{
+ struct btree_iter iter;
+ struct bkey_s_c k;
+ u32 snapshot = pos.snapshot;
+ int ret;
+
+ if (!bch2_snapshot_parent(trans->c, pos.snapshot))
+ return 0;
+
+ pos.snapshot++;
+
+ for_each_btree_key_norestart(trans, iter, btree_id, pos,
+ BTREE_ITER_ALL_SNAPSHOTS|
+ BTREE_ITER_NOPRESERVE, k, ret) {
+ if (bkey_cmp(k.k->p, pos))
+ break;
+
+ if (bch2_snapshot_is_ancestor(trans->c, snapshot,
+ k.k->p.snapshot)) {
+ ret = !bkey_whiteout(k.k);
+ break;
+ }
+ }
+ bch2_trans_iter_exit(trans, &iter);
+
+ 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)
{
- struct btree_iter *iter;
+ struct bch_fs *c = trans->c;
+ struct btree_insert_entry *i, n;
+
+ BUG_ON(!path->should_be_locked);
+
+ BUG_ON(trans->nr_updates >= BTREE_ITER_MAX);
+ BUG_ON(bpos_cmp(k->k.p, path->pos));
+
+ n = (struct btree_insert_entry) {
+ .flags = flags,
+ .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_,
+ };
+
+#ifdef CONFIG_BCACHEFS_DEBUG
+ trans_for_each_update(trans, i)
+ BUG_ON(i != trans->updates &&
+ btree_insert_entry_cmp(i - 1, i) >= 0);
+#endif
+
+ /*
+ * Pending updates are kept sorted: first, find position of new update,
+ * then delete/trim any updates the new update overwrites:
+ */
+ trans_for_each_update(trans, i)
+ if (btree_insert_entry_cmp(&n, i) <= 0)
+ break;
+
+ if (i < trans->updates + trans->nr_updates &&
+ !btree_insert_entry_cmp(&n, i)) {
+ BUG_ON(i->insert_trigger_run || i->overwrite_trigger_run);
+
+ bch2_path_put(trans, i->path, true);
+ 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);
- iter = bch2_trans_get_iter(trans, id, bkey_start_pos(&k->k),
- BTREE_ITER_INTENT);
- if (IS_ERR(iter))
- return PTR_ERR(iter);
+ 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;
- bch2_trans_update(trans, iter, k);
+ if (unlikely(!test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags))) {
+ struct bkey_i *j_k =
+ bch2_journal_keys_peek(c, n.btree_id, n.level, k->k.p);
+
+ if (j_k && !bpos_cmp(j_k->k.p, i->k->k.p)) {
+ i->old_k = j_k->k;
+ i->old_v = &j_k->v;
+ }
+ }
+ }
+
+ __btree_path_get(n.path, true);
return 0;
}
+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;
+ }
+
+ 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,
+ struct btree_trans_commit_hook *h)
+{
+ h->next = trans->hooks;
+ trans->hooks = h;
+}
+
+int __bch2_btree_insert(struct btree_trans *trans,
+ enum btree_id id, struct bkey_i *k)
+{
+ struct btree_iter iter;
+ int ret;
+
+ bch2_trans_iter_init(trans, &iter, id, bkey_start_pos(&k->k),
+ BTREE_ITER_INTENT);
+ ret = bch2_btree_iter_traverse(&iter) ?:
+ bch2_trans_update(trans, &iter, k, 0);
+ bch2_trans_iter_exit(trans, &iter);
+ return ret;
+}
+
/**
* bch2_btree_insert - insert keys into the extent btree
* @c: pointer to struct bch_fs
__bch2_btree_insert(&trans, id, k));
}
-int bch2_btree_delete_at_range(struct btree_trans *trans,
- struct btree_iter *iter,
- struct bpos end,
- u64 *journal_seq)
+int bch2_btree_delete_at(struct btree_trans *trans,
+ struct btree_iter *iter, unsigned update_flags)
+{
+ struct bkey_i *k;
+
+ k = bch2_trans_kmalloc(trans, sizeof(*k));
+ if (IS_ERR(k))
+ return PTR_ERR(k);
+
+ bkey_init(&k->k);
+ k->k.p = iter->pos;
+ return bch2_trans_update(trans, iter, k, update_flags);
+}
+
+int bch2_btree_delete_range_trans(struct btree_trans *trans, enum btree_id id,
+ struct bpos start, struct bpos end,
+ 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);
retry:
- while ((k = bch2_btree_iter_peek(iter)).k &&
+ while ((bch2_trans_begin(trans),
+ (k = bch2_btree_iter_peek(&iter)).k) &&
!(ret = bkey_err(k)) &&
- bkey_cmp(iter->pos, end) < 0) {
+ bkey_cmp(iter.pos, end) < 0) {
+ struct disk_reservation disk_res =
+ bch2_disk_reservation_init(trans->c, 0);
struct bkey_i delete;
- bch2_trans_reset(trans, TRANS_RESET_MEM);
-
bkey_init(&delete.k);
+ /*
+ * This could probably be more efficient for extents:
+ */
+
/*
* For extents, iter.pos won't necessarily be the same as
* bkey_start_pos(k.k) (for non extents they always will be the
* (bch2_btree_iter_peek() does guarantee that iter.pos >=
* bkey_start_pos(k.k)).
*/
- delete.k.p = iter->pos;
+ delete.k.p = iter.pos;
- if (iter->flags & BTREE_ITER_IS_EXTENTS) {
+ if (iter.flags & BTREE_ITER_IS_EXTENTS) {
unsigned max_sectors =
KEY_SIZE_MAX & (~0 << trans->c->block_bits);
bch2_key_resize(&delete.k, max_sectors);
bch2_cut_back(end, &delete);
- ret = bch2_extent_trim_atomic(&delete, iter);
+ ret = bch2_extent_trim_atomic(trans, &iter, &delete);
if (ret)
break;
}
- bch2_trans_update(trans, iter, &delete);
- ret = bch2_trans_commit(trans, NULL, journal_seq,
- BTREE_INSERT_NOFAIL);
+ ret = bch2_trans_update(trans, &iter, &delete, 0) ?:
+ bch2_trans_commit(trans, &disk_res, journal_seq,
+ BTREE_INSERT_NOFAIL|
+ update_flags);
+ bch2_disk_reservation_put(trans->c, &disk_res);
if (ret)
break;
-
- bch2_trans_cond_resched(trans);
}
if (ret == -EINTR) {
goto retry;
}
+ bch2_trans_iter_exit(trans, &iter);
return ret;
-
-}
-
-int bch2_btree_delete_at(struct btree_trans *trans,
- struct btree_iter *iter, unsigned flags)
-{
- struct bkey_i k;
-
- bkey_init(&k.k);
- k.k.p = iter->pos;
-
- bch2_trans_update(trans, iter, &k);
- return bch2_trans_commit(trans, NULL, NULL,
- BTREE_INSERT_NOFAIL|
- BTREE_INSERT_USE_RESERVE|flags);
}
/*
*/
int bch2_btree_delete_range(struct bch_fs *c, enum btree_id id,
struct bpos start, struct bpos end,
+ unsigned update_flags,
u64 *journal_seq)
{
- struct btree_trans trans;
- struct btree_iter *iter;
- int ret = 0;
-
- /*
- * XXX: whether we need mem/more iters depends on whether this btree id
- * has triggers
- */
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 512);
-
- iter = bch2_trans_get_iter(&trans, id, start, BTREE_ITER_INTENT);
-
- ret = bch2_btree_delete_at_range(&trans, iter, end, journal_seq);
- ret = bch2_trans_exit(&trans) ?: ret;
-
- BUG_ON(ret == -EINTR);
- return ret;
+ return bch2_trans_do(c, NULL, journal_seq, 0,
+ bch2_btree_delete_range_trans(&trans, id, start, end,
+ update_flags, journal_seq));
}
projects / bcachefs-tools-debian / blobdiff