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https://github.com/torvalds/linux.git
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bcachefs: Consolidate mark_stripe_bucket() and trans_mark_stripe_bucket()
This eliminates some duplicated logic, and the gc path now handles stripe updates and deletions - we need this since soon we're bringing back runtime gc. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
parent
d930764650
commit
9cc455d1bc
253
fs/bcachefs/ec.c
253
fs/bcachefs/ec.c
@ -163,9 +163,16 @@ void bch2_stripe_to_text(struct printbuf *out, struct bch_fs *c,
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/* Triggers: */
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static int bch2_trans_mark_stripe_bucket(struct btree_trans *trans,
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struct bkey_s_c_stripe s,
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unsigned ptr_idx, bool deleting)
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static int __mark_stripe_bucket(struct btree_trans *trans,
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struct bkey_s_c_stripe s,
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unsigned ptr_idx, bool deleting,
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struct bpos bucket,
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u8 bucket_gen,
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u8 *bucket_data_type,
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u32 *bucket_dirty_sectors,
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u32 *bucket_cached_sectors,
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u32 *bucket_stripe,
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u8 *bucket_stripe_redundancy)
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{
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struct bch_fs *c = trans->c;
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const struct bch_extent_ptr *ptr = s.v->ptrs + ptr_idx;
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@ -179,51 +186,44 @@ static int bch2_trans_mark_stripe_bucket(struct btree_trans *trans,
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if (deleting)
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sectors = -sectors;
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struct btree_iter iter;
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struct bkey_i_alloc_v4 *a =
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bch2_trans_start_alloc_update(trans, &iter, PTR_BUCKET_POS(c, ptr));
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ret = PTR_ERR_OR_ZERO(a);
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if (ret)
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goto err;
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if (!deleting) {
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if (bch2_trans_inconsistent_on(a->v.stripe ||
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a->v.stripe_redundancy, trans,
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if (bch2_trans_inconsistent_on(*bucket_stripe ||
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*bucket_stripe_redundancy, trans,
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"bucket %llu:%llu gen %u data type %s dirty_sectors %u: multiple stripes using same bucket (%u, %llu)\n%s",
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iter.pos.inode, iter.pos.offset, a->v.gen,
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bch2_data_type_str(a->v.data_type),
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a->v.dirty_sectors,
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a->v.stripe, s.k->p.offset,
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bucket.inode, bucket.offset, bucket_gen,
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bch2_data_type_str(*bucket_data_type),
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*bucket_dirty_sectors,
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*bucket_stripe, s.k->p.offset,
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(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf))) {
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ret = -EIO;
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goto err;
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}
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if (bch2_trans_inconsistent_on(parity && (a->v.dirty_sectors || a->v.cached_sectors), trans,
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if (bch2_trans_inconsistent_on(parity && (*bucket_dirty_sectors || *bucket_cached_sectors), trans,
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"bucket %llu:%llu gen %u data type %s dirty_sectors %u cached_sectors %u: data already in parity bucket\n%s",
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iter.pos.inode, iter.pos.offset, a->v.gen,
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bch2_data_type_str(a->v.data_type),
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a->v.dirty_sectors,
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a->v.cached_sectors,
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bucket.inode, bucket.offset, bucket_gen,
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bch2_data_type_str(*bucket_data_type),
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*bucket_dirty_sectors,
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*bucket_cached_sectors,
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(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf))) {
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ret = -EIO;
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goto err;
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}
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} else {
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if (bch2_trans_inconsistent_on(a->v.stripe != s.k->p.offset ||
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a->v.stripe_redundancy != s.v->nr_redundant, trans,
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if (bch2_trans_inconsistent_on(*bucket_stripe != s.k->p.offset ||
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*bucket_stripe_redundancy != s.v->nr_redundant, trans,
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"bucket %llu:%llu gen %u: not marked as stripe when deleting stripe (got %u)\n%s",
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iter.pos.inode, iter.pos.offset, a->v.gen,
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a->v.stripe,
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bucket.inode, bucket.offset, bucket_gen,
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*bucket_stripe,
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(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf))) {
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ret = -EIO;
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goto err;
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}
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if (bch2_trans_inconsistent_on(a->v.data_type != data_type, trans,
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if (bch2_trans_inconsistent_on(*bucket_data_type != data_type, trans,
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"bucket %llu:%llu gen %u data type %s: wrong data type when stripe, should be %s\n%s",
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iter.pos.inode, iter.pos.offset, a->v.gen,
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bch2_data_type_str(a->v.data_type),
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bucket.inode, bucket.offset, bucket_gen,
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bch2_data_type_str(*bucket_data_type),
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bch2_data_type_str(data_type),
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(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf))) {
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ret = -EIO;
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@ -231,12 +231,12 @@ static int bch2_trans_mark_stripe_bucket(struct btree_trans *trans,
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}
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if (bch2_trans_inconsistent_on(parity &&
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(a->v.dirty_sectors != -sectors ||
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a->v.cached_sectors), trans,
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(*bucket_dirty_sectors != -sectors ||
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*bucket_cached_sectors), trans,
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"bucket %llu:%llu gen %u dirty_sectors %u cached_sectors %u: wrong sectors when deleting parity block of stripe\n%s",
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iter.pos.inode, iter.pos.offset, a->v.gen,
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a->v.dirty_sectors,
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a->v.cached_sectors,
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bucket.inode, bucket.offset, bucket_gen,
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*bucket_dirty_sectors,
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*bucket_cached_sectors,
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(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf))) {
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ret = -EIO;
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goto err;
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@ -244,88 +244,128 @@ static int bch2_trans_mark_stripe_bucket(struct btree_trans *trans,
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}
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ret = bch2_check_bucket_ref(trans, s.s_c, ptr, sectors, data_type,
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a->v.gen, a->v.data_type,
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a->v.dirty_sectors);
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bucket_gen, *bucket_data_type,
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*bucket_dirty_sectors);
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if (ret)
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goto err;
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a->v.dirty_sectors += sectors;
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*bucket_dirty_sectors += sectors;
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if (!deleting) {
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a->v.stripe = s.k->p.offset;
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a->v.stripe_redundancy = s.v->nr_redundant;
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a->v.data_type = data_type;
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*bucket_stripe = s.k->p.offset;
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*bucket_stripe_redundancy = s.v->nr_redundant;
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*bucket_data_type = data_type;
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} else {
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a->v.stripe = 0;
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a->v.stripe_redundancy = 0;
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a->v.data_type = alloc_data_type(a->v, BCH_DATA_user);
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*bucket_stripe = 0;
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*bucket_stripe_redundancy = 0;
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*bucket_data_type = BCH_DATA_free;
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}
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ret = bch2_trans_update(trans, &iter, &a->k_i, 0);
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if (ret)
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goto err;
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err:
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bch2_trans_iter_exit(trans, &iter);
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printbuf_exit(&buf);
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return ret;
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}
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static int mark_stripe_bucket(struct btree_trans *trans,
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struct bkey_s_c_stripe s,
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unsigned ptr_idx,
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unsigned ptr_idx, bool deleting,
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enum btree_iter_update_trigger_flags flags)
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{
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struct bch_fs *c = trans->c;
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const struct bch_extent_ptr *ptr = s.v->ptrs + ptr_idx;
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unsigned nr_data = s.v->nr_blocks - s.v->nr_redundant;
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bool parity = ptr_idx >= nr_data;
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enum bch_data_type data_type = parity ? BCH_DATA_parity : BCH_DATA_stripe;
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s64 sectors = parity ? le16_to_cpu(s.v->sectors) : 0;
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struct printbuf buf = PRINTBUF;
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int ret = 0;
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struct bpos bucket = PTR_BUCKET_POS(c, ptr);
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BUG_ON(!(flags & BTREE_TRIGGER_gc));
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if (flags & BTREE_TRIGGER_transactional) {
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struct btree_iter iter;
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struct bkey_i_alloc_v4 *a =
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bch2_trans_start_alloc_update(trans, &iter, bucket);
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int ret = PTR_ERR_OR_ZERO(a) ?:
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__mark_stripe_bucket(trans, s, ptr_idx, deleting, iter.pos,
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a->v.gen,
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&a->v.data_type,
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&a->v.dirty_sectors,
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&a->v.cached_sectors,
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&a->v.stripe,
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&a->v.stripe_redundancy);
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if (ret)
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goto err;
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/* * XXX doesn't handle deletion */
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if (deleting)
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a->v.data_type = alloc_data_type(a->v, BCH_DATA_user);
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struct bch_dev *ca = bch2_dev_bkey_exists(c, ptr->dev);
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struct bucket old, new, *g;
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percpu_down_read(&c->mark_lock);
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g = PTR_GC_BUCKET(ca, ptr);
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if (g->dirty_sectors ||
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(g->stripe && g->stripe != s.k->p.offset)) {
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bch2_fs_inconsistent(c,
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"bucket %u:%zu gen %u: multiple stripes using same bucket\n%s",
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ptr->dev, PTR_BUCKET_NR(ca, ptr), g->gen,
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(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf));
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ret = -EINVAL;
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goto err;
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ret = bch2_trans_update(trans, &iter, &a->k_i, 0);
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if (ret)
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goto err;
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err:
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bch2_trans_iter_exit(trans, &iter);
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return ret;
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}
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bucket_lock(g);
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old = *g;
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if (flags & BTREE_TRIGGER_gc) {
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struct bch_dev *ca = bch2_dev_bkey_exists(c, ptr->dev);
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ret = bch2_check_bucket_ref(trans, s.s_c, ptr, sectors, data_type,
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g->gen, g->data_type,
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g->dirty_sectors);
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if (ret)
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goto err;
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percpu_down_read(&c->mark_lock);
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struct bucket *g = gc_bucket(ca, bucket.offset);
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g->data_type = data_type;
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g->dirty_sectors += sectors;
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bucket_lock(g);
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struct bucket old = *g;
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u8 data_type = g->data_type;
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g->stripe = s.k->p.offset;
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g->stripe_redundancy = s.v->nr_redundant;
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new = *g;
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err:
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bucket_unlock(g);
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if (!ret)
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bch2_dev_usage_update_m(c, ca, &old, &new);
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percpu_up_read(&c->mark_lock);
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printbuf_exit(&buf);
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return ret;
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int ret = __mark_stripe_bucket(trans, s, ptr_idx, deleting, bucket,
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g->gen,
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&data_type,
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&g->dirty_sectors,
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&g->cached_sectors,
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&g->stripe,
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&g->stripe_redundancy);
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g->data_type = data_type;
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struct bucket new = *g;
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bucket_unlock(g);
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if (!ret)
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bch2_dev_usage_update_m(c, ca, &old, &new);
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percpu_up_read(&c->mark_lock);
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return ret;
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}
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BUG();
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return 0;
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}
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static int mark_stripe_buckets(struct btree_trans *trans,
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struct bkey_s_c old, struct bkey_s_c new,
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enum btree_iter_update_trigger_flags flags)
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{
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const struct bch_stripe *old_s = old.k->type == KEY_TYPE_stripe
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? bkey_s_c_to_stripe(old).v : NULL;
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const struct bch_stripe *new_s = new.k->type == KEY_TYPE_stripe
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? bkey_s_c_to_stripe(new).v : NULL;
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BUG_ON(old_s && new_s && old_s->nr_blocks != new_s->nr_blocks);
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unsigned nr_blocks = new_s ? new_s->nr_blocks : old_s->nr_blocks;
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for (unsigned i = 0; i < nr_blocks; i++) {
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if (new_s && old_s &&
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!memcmp(&new_s->ptrs[i],
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&old_s->ptrs[i],
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sizeof(new_s->ptrs[i])))
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continue;
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if (new_s) {
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int ret = mark_stripe_bucket(trans,
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bkey_s_c_to_stripe(new), i, false, flags);
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if (ret)
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return ret;
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}
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if (old_s) {
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int ret = mark_stripe_bucket(trans,
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bkey_s_c_to_stripe(old), i, true, flags);
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if (ret)
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return ret;
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}
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}
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return 0;
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}
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int bch2_trigger_stripe(struct btree_trans *trans,
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@ -376,28 +416,9 @@ int bch2_trigger_stripe(struct btree_trans *trans,
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return ret;
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}
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unsigned nr_blocks = new_s ? new_s->nr_blocks : old_s->nr_blocks;
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for (unsigned i = 0; i < nr_blocks; i++) {
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if (new_s && old_s &&
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!memcmp(&new_s->ptrs[i],
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&old_s->ptrs[i],
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sizeof(new_s->ptrs[i])))
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continue;
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if (new_s) {
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int ret = bch2_trans_mark_stripe_bucket(trans,
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bkey_s_c_to_stripe(new), i, false);
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if (ret)
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return ret;
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}
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if (old_s) {
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int ret = bch2_trans_mark_stripe_bucket(trans,
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bkey_s_c_to_stripe(old), i, true);
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if (ret)
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return ret;
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}
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}
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int ret = mark_stripe_buckets(trans, old, new, flags);
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if (ret)
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return ret;
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}
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if (flags & BTREE_TRIGGER_atomic) {
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@ -468,13 +489,11 @@ int bch2_trigger_stripe(struct btree_trans *trans,
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*/
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memset(m->block_sectors, 0, sizeof(m->block_sectors));
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for (unsigned i = 0; i < new_s->nr_blocks; i++) {
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int ret = mark_stripe_bucket(trans, bkey_s_c_to_stripe(new), i, flags);
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if (ret)
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return ret;
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}
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int ret = mark_stripe_buckets(trans, old, new, flags);
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if (ret)
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return ret;
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int ret = bch2_update_replicas(c, new, &m->r.e,
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ret = bch2_update_replicas(c, new, &m->r.e,
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((s64) m->sectors * m->nr_redundant),
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0, true);
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if (ret) {
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