#define QSTR(n) { { { .len = strlen(n) } }, .name = n }
-/* journal replay: */
+/* sort and dedup all keys in the journal: */
-static void bch2_journal_entries_free(struct list_head *list)
+static void journal_entries_free(struct list_head *list)
{
while (!list_empty(list)) {
}
}
+static int journal_sort_key_cmp(const void *_l, const void *_r)
+{
+ const struct journal_key *l = _l;
+ const struct journal_key *r = _r;
+
+ return cmp_int(l->btree_id, r->btree_id) ?:
+ bkey_cmp(l->pos, r->pos) ?:
+ cmp_int(l->journal_seq, r->journal_seq) ?:
+ cmp_int(l->journal_offset, r->journal_offset);
+}
+
+static int journal_sort_seq_cmp(const void *_l, const void *_r)
+{
+ const struct journal_key *l = _l;
+ const struct journal_key *r = _r;
+
+ return cmp_int(l->journal_seq, r->journal_seq) ?:
+ cmp_int(l->btree_id, r->btree_id) ?:
+ bkey_cmp(l->pos, r->pos);
+}
+
+static void journal_keys_sift(struct journal_keys *keys, struct journal_key *i)
+{
+ while (i + 1 < keys->d + keys->nr &&
+ journal_sort_key_cmp(i, i + 1) > 0) {
+ swap(i[0], i[1]);
+ i++;
+ }
+}
+
+static void journal_keys_free(struct journal_keys *keys)
+{
+ struct journal_key *i;
+
+ for_each_journal_key(*keys, i)
+ if (i->allocated)
+ kfree(i->k);
+ kvfree(keys->d);
+ keys->d = NULL;
+ keys->nr = 0;
+}
+
+static struct journal_keys journal_keys_sort(struct list_head *journal_entries)
+{
+ struct journal_replay *p;
+ struct jset_entry *entry;
+ struct bkey_i *k, *_n;
+ struct journal_keys keys = { NULL }, keys_deduped = { NULL };
+ struct journal_key *i;
+ size_t nr_keys = 0;
+
+ list_for_each_entry(p, journal_entries, list)
+ for_each_jset_key(k, _n, entry, &p->j)
+ nr_keys++;
+
+ keys.journal_seq_base = keys_deduped.journal_seq_base =
+ le64_to_cpu(list_first_entry(journal_entries,
+ struct journal_replay,
+ list)->j.seq);
+
+ keys.d = kvmalloc(sizeof(keys.d[0]) * nr_keys, GFP_KERNEL);
+ if (!keys.d)
+ goto err;
+
+ keys_deduped.d = kvmalloc(sizeof(keys.d[0]) * nr_keys * 2, GFP_KERNEL);
+ if (!keys_deduped.d)
+ goto err;
+
+ list_for_each_entry(p, journal_entries, list)
+ for_each_jset_key(k, _n, entry, &p->j)
+ keys.d[keys.nr++] = (struct journal_key) {
+ .btree_id = entry->btree_id,
+ .pos = bkey_start_pos(&k->k),
+ .k = k,
+ .journal_seq = le64_to_cpu(p->j.seq) -
+ keys.journal_seq_base,
+ .journal_offset = k->_data - p->j._data,
+ };
+
+ sort(keys.d, nr_keys, sizeof(keys.d[0]), journal_sort_key_cmp, NULL);
+
+ i = keys.d;
+ while (i < keys.d + keys.nr) {
+ if (i + 1 < keys.d + keys.nr &&
+ i[0].btree_id == i[1].btree_id &&
+ !bkey_cmp(i[0].pos, i[1].pos)) {
+ if (bkey_cmp(i[0].k->k.p, i[1].k->k.p) <= 0) {
+ i++;
+ } else {
+ bch2_cut_front(i[1].k->k.p, i[0].k);
+ i[0].pos = i[1].k->k.p;
+ journal_keys_sift(&keys, i);
+ }
+ continue;
+ }
+
+ if (i + 1 < keys.d + keys.nr &&
+ i[0].btree_id == i[1].btree_id &&
+ bkey_cmp(i[0].k->k.p, bkey_start_pos(&i[1].k->k)) > 0) {
+ if ((cmp_int(i[0].journal_seq, i[1].journal_seq) ?:
+ cmp_int(i[0].journal_offset, i[1].journal_offset)) < 0) {
+ if (bkey_cmp(i[0].k->k.p, i[1].k->k.p) <= 0) {
+ bch2_cut_back(bkey_start_pos(&i[1].k->k), &i[0].k->k);
+ } else {
+ struct bkey_i *split =
+ kmalloc(bkey_bytes(i[0].k), GFP_KERNEL);
+
+ if (!split)
+ goto err;
+
+ bkey_copy(split, i[0].k);
+ bch2_cut_back(bkey_start_pos(&i[1].k->k), &split->k);
+ keys_deduped.d[keys_deduped.nr++] = (struct journal_key) {
+ .btree_id = i[0].btree_id,
+ .allocated = true,
+ .pos = bkey_start_pos(&split->k),
+ .k = split,
+ .journal_seq = i[0].journal_seq,
+ .journal_offset = i[0].journal_offset,
+ };
+
+ bch2_cut_front(i[1].k->k.p, i[0].k);
+ i[0].pos = i[1].k->k.p;
+ journal_keys_sift(&keys, i);
+ continue;
+ }
+ } else {
+ if (bkey_cmp(i[0].k->k.p, i[1].k->k.p) >= 0) {
+ i[1] = i[0];
+ i++;
+ continue;
+ } else {
+ bch2_cut_front(i[0].k->k.p, i[1].k);
+ i[1].pos = i[0].k->k.p;
+ journal_keys_sift(&keys, i + 1);
+ continue;
+ }
+ }
+ }
+
+ keys_deduped.d[keys_deduped.nr++] = *i++;
+ }
+
+ kvfree(keys.d);
+ return keys_deduped;
+err:
+ journal_keys_free(&keys_deduped);
+ kvfree(keys.d);
+ return (struct journal_keys) { NULL };
+}
+
+/* journal replay: */
+
+static void replay_now_at(struct journal *j, u64 seq)
+{
+ BUG_ON(seq < j->replay_journal_seq);
+ BUG_ON(seq > j->replay_journal_seq_end);
+
+ while (j->replay_journal_seq < seq)
+ bch2_journal_pin_put(j, j->replay_journal_seq++);
+}
+
static int bch2_extent_replay_key(struct bch_fs *c, struct bkey_i *k)
{
struct btree_trans trans;
return ret;
}
-static int bch2_journal_replay_key(struct bch_fs *c, enum btree_id btree_id,
- struct bkey_i *k)
-{
- switch (btree_id) {
- case BTREE_ID_ALLOC:
- return bch2_alloc_replay_key(c, k);
- case BTREE_ID_EXTENTS:
- return bch2_extent_replay_key(c, k);
- default:
- return bch2_btree_insert(c, btree_id, k,
- NULL, NULL,
- BTREE_INSERT_NOFAIL|
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_JOURNAL_REPLAY|
- BTREE_INSERT_NOMARK);
- }
-}
-
-static void replay_now_at(struct journal *j, u64 seq)
-{
- BUG_ON(seq < j->replay_journal_seq);
- BUG_ON(seq > j->replay_journal_seq_end);
-
- while (j->replay_journal_seq < seq)
- bch2_journal_pin_put(j, j->replay_journal_seq++);
-}
-
-static int bch2_journal_replay(struct bch_fs *c, struct list_head *list)
+static int bch2_journal_replay(struct bch_fs *c,
+ struct journal_keys keys)
{
struct journal *j = &c->journal;
- struct bkey_i *k, *_n;
- struct jset_entry *entry;
- struct journal_replay *i, *n;
- int ret = 0;
+ struct journal_key *i;
+ int ret;
- list_for_each_entry_safe(i, n, list, list) {
- replay_now_at(j, le64_to_cpu(i->j.seq));
+ sort(keys.d, keys.nr, sizeof(keys.d[0]), journal_sort_seq_cmp, NULL);
- for_each_jset_key(k, _n, entry, &i->j) {
- ret = bch2_journal_replay_key(c, entry->btree_id, k);
- if (ret) {
- bch_err(c, "journal replay: error %d while replaying key",
- ret);
- goto err;
- }
+ for_each_journal_key(keys, i) {
+ replay_now_at(j, keys.journal_seq_base + i->journal_seq);
+
+ switch (i->btree_id) {
+ case BTREE_ID_ALLOC:
+ ret = bch2_alloc_replay_key(c, i->k);
+ break;
+ case BTREE_ID_EXTENTS:
+ ret = bch2_extent_replay_key(c, i->k);
+ break;
+ default:
+ ret = bch2_btree_insert(c, i->btree_id, i->k,
+ NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW|
+ BTREE_INSERT_JOURNAL_REPLAY|
+ BTREE_INSERT_NOMARK);
+ break;
+ }
- cond_resched();
+ if (ret) {
+ bch_err(c, "journal replay: error %d while replaying key",
+ ret);
+ return ret;
}
+
+ cond_resched();
}
replay_now_at(j, j->replay_journal_seq_end);
bch2_journal_set_replay_done(j);
bch2_journal_flush_all_pins(j);
- ret = bch2_journal_error(j);
-err:
- bch2_journal_entries_free(list);
- return ret;
+ return bch2_journal_error(j);
}
static bool journal_empty(struct list_head *journal)
const char *err = "cannot allocate memory";
struct bch_sb_field_clean *clean = NULL;
u64 journal_seq;
- LIST_HEAD(journal);
+ LIST_HEAD(journal_entries);
+ struct journal_keys journal_keys = { NULL };
int ret;
if (c->sb.clean)
if (!c->sb.clean || c->opts.fsck) {
struct jset *j;
- ret = bch2_journal_read(c, &journal);
+ ret = bch2_journal_read(c, &journal_entries);
if (ret)
goto err;
- fsck_err_on(c->sb.clean && !journal_empty(&journal), c,
+ fsck_err_on(c->sb.clean && !journal_empty(&journal_entries), c,
"filesystem marked clean but journal not empty");
- if (!c->sb.clean && list_empty(&journal)){
+ if (!c->sb.clean && list_empty(&journal_entries)) {
bch_err(c, "no journal entries found");
ret = BCH_FSCK_REPAIR_IMPOSSIBLE;
goto err;
}
- j = &list_last_entry(&journal, struct journal_replay, list)->j;
+ journal_keys = journal_keys_sort(&journal_entries);
+ if (!journal_keys.d) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ j = &list_last_entry(&journal_entries,
+ struct journal_replay, list)->j;
ret = verify_superblock_clean(c, &clean, j);
if (ret)
journal_seq = le64_to_cpu(clean->journal_seq) + 1;
}
- ret = journal_replay_early(c, clean, &journal);
+ ret = journal_replay_early(c, clean, &journal_entries);
if (ret)
goto err;
ret = bch2_blacklist_table_initialize(c);
- ret = verify_journal_entries_not_blacklisted_or_missing(c, &journal);
+ ret = verify_journal_entries_not_blacklisted_or_missing(c,
+ &journal_entries);
if (ret)
goto err;
- ret = bch2_fs_journal_start(&c->journal, journal_seq, &journal);
+ ret = bch2_fs_journal_start(&c->journal, journal_seq,
+ &journal_entries);
if (ret)
goto err;
goto err;
err = "error reading allocation information";
- ret = bch2_alloc_read(c, &journal);
+ ret = bch2_alloc_read(c, &journal_keys);
if (ret)
goto err;
bch_verbose(c, "starting stripes_read");
- ret = bch2_stripes_read(c, &journal);
+ ret = bch2_stripes_read(c, &journal_keys);
if (ret)
goto err;
bch_verbose(c, "stripes_read done");
test_bit(BCH_FS_REBUILD_REPLICAS, &c->flags)) {
bch_verbose(c, "starting mark and sweep:");
err = "error in recovery";
- ret = bch2_gc(c, &journal, true, false);
+ ret = bch2_gc(c, &journal_keys, true, false);
if (ret)
goto err;
bch_verbose(c, "mark and sweep done");
bch_verbose(c, "starting journal replay:");
err = "journal replay failed";
- ret = bch2_journal_replay(c, &journal);
+ ret = bch2_journal_replay(c, journal_keys);
if (ret)
goto err;
bch_verbose(c, "journal replay done");
c->journal_seq_blacklist_table->nr > 128)
queue_work(system_long_wq, &c->journal_seq_blacklist_gc_work);
out:
- bch2_journal_entries_free(&journal);
+ journal_keys_free(&journal_keys);
+ journal_entries_free(&journal_entries);
kfree(clean);
return ret;
err:
projects / linux-2.6-block.git / commitdiff