Update bcachefs sources to d267e10a43b2 bcachefs: __bch2_sb_field_to_text()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 255 insertions, 789 deletions

diff --git a/libbcachefs/buckets.c b/libbcachefs/buckets.c
index c0dac042..67b7e796 100644
--- a/libbcachefs/buckets.c
+++ b/libbcachefs/buckets.c
@@ -296,10 +296,10 @@ void bch2_dev_usage_to_text(struct printbuf *out, struct bch_dev_usage *usage)
 	}
 }
 
-static void bch2_dev_usage_update(struct bch_fs *c, struct bch_dev *ca,
-				  struct bch_alloc_v4 old,
-				  struct bch_alloc_v4 new,
-				  u64 journal_seq, bool gc)
+void bch2_dev_usage_update(struct bch_fs *c, struct bch_dev *ca,
+			   const struct bch_alloc_v4 *old,
+			   const struct bch_alloc_v4 *new,
+			   u64 journal_seq, bool gc)
 {
 	struct bch_fs_usage *fs_usage;
 	struct bch_dev_usage *u;
@@ -307,24 +307,24 @@ static void bch2_dev_usage_update(struct bch_fs *c, struct bch_dev *ca,
 	preempt_disable();
 	fs_usage = fs_usage_ptr(c, journal_seq, gc);
 
-	if (data_type_is_hidden(old.data_type))
+	if (data_type_is_hidden(old->data_type))
 		fs_usage->hidden -= ca->mi.bucket_size;
-	if (data_type_is_hidden(new.data_type))
+	if (data_type_is_hidden(new->data_type))
 		fs_usage->hidden += ca->mi.bucket_size;
 
 	u = dev_usage_ptr(ca, journal_seq, gc);
 
-	u->d[old.data_type].buckets--;
-	u->d[new.data_type].buckets++;
+	u->d[old->data_type].buckets--;
+	u->d[new->data_type].buckets++;
 
-	u->d[old.data_type].sectors -= bch2_bucket_sectors_dirty(old);
-	u->d[new.data_type].sectors += bch2_bucket_sectors_dirty(new);
+	u->d[old->data_type].sectors -= bch2_bucket_sectors_dirty(*old);
+	u->d[new->data_type].sectors += bch2_bucket_sectors_dirty(*new);
 
-	u->d[BCH_DATA_cached].sectors += new.cached_sectors;
-	u->d[BCH_DATA_cached].sectors -= old.cached_sectors;
+	u->d[BCH_DATA_cached].sectors += new->cached_sectors;
+	u->d[BCH_DATA_cached].sectors -= old->cached_sectors;
 
-	u->d[old.data_type].fragmented -= bch2_bucket_sectors_fragmented(ca, old);
-	u->d[new.data_type].fragmented += bch2_bucket_sectors_fragmented(ca, new);
+	u->d[old->data_type].fragmented -= bch2_bucket_sectors_fragmented(ca, *old);
+	u->d[new->data_type].fragmented += bch2_bucket_sectors_fragmented(ca, *new);
 
 	preempt_enable();
 }
@@ -340,13 +340,13 @@ static inline struct bch_alloc_v4 bucket_m_to_alloc(struct bucket b)
 	};
 }
 
-static void bch2_dev_usage_update_m(struct bch_fs *c, struct bch_dev *ca,
-				    struct bucket old, struct bucket new)
+void bch2_dev_usage_update_m(struct bch_fs *c, struct bch_dev *ca,
+			     struct bucket *old, struct bucket *new)
 {
-	bch2_dev_usage_update(c, ca,
-			      bucket_m_to_alloc(old),
-			      bucket_m_to_alloc(new),
-			      0, true);
+	struct bch_alloc_v4 old_a = bucket_m_to_alloc(*old);
+	struct bch_alloc_v4 new_a = bucket_m_to_alloc(*new);
+
+	bch2_dev_usage_update(c, ca, &old_a, &new_a, 0, true);
 }
 
 static inline int __update_replicas(struct bch_fs *c,
@@ -364,9 +364,9 @@ static inline int __update_replicas(struct bch_fs *c,
 	return 0;
 }
 
-static inline int update_replicas(struct bch_fs *c, struct bkey_s_c k,
-			struct bch_replicas_entry_v1 *r, s64 sectors,
-			unsigned journal_seq, bool gc)
+int bch2_update_replicas(struct bch_fs *c, struct bkey_s_c k,
+			 struct bch_replicas_entry_v1 *r, s64 sectors,
+			 unsigned journal_seq, bool gc)
 {
 	struct bch_fs_usage *fs_usage;
 	int idx, ret = 0;
@@ -413,7 +413,7 @@ static inline int update_cached_sectors(struct bch_fs *c,
 
 	bch2_replicas_entry_cached(&r.e, dev);
 
-	return update_replicas(c, k, &r.e, sectors, journal_seq, gc);
+	return bch2_update_replicas(c, k, &r.e, sectors, journal_seq, gc);
 }
 
 static int __replicas_deltas_realloc(struct btree_trans *trans, unsigned more,
@@ -496,114 +496,6 @@ int bch2_update_cached_sectors_list(struct btree_trans *trans, unsigned dev, s64
 	return bch2_update_replicas_list(trans, &r.e, sectors);
 }
 
-int bch2_mark_alloc(struct btree_trans *trans,
-		    enum btree_id btree, unsigned level,
-		    struct bkey_s_c old, struct bkey_s_c new,
-		    unsigned flags)
-{
-	bool gc = flags & BTREE_TRIGGER_GC;
-	u64 journal_seq = trans->journal_res.seq;
-	u64 bucket_journal_seq;
-	struct bch_fs *c = trans->c;
-	struct bch_alloc_v4 old_a_convert, new_a_convert;
-	const struct bch_alloc_v4 *old_a, *new_a;
-	struct bch_dev *ca;
-	int ret = 0;
-
-	/*
-	 * alloc btree is read in by bch2_alloc_read, not gc:
-	 */
-	if ((flags & BTREE_TRIGGER_GC) &&
-	    !(flags & BTREE_TRIGGER_BUCKET_INVALIDATE))
-		return 0;
-
-	if (bch2_trans_inconsistent_on(!bch2_dev_bucket_exists(c, new.k->p), trans,
-				       "alloc key for invalid device or bucket"))
-		return -EIO;
-
-	ca = bch_dev_bkey_exists(c, new.k->p.inode);
-
-	old_a = bch2_alloc_to_v4(old, &old_a_convert);
-	new_a = bch2_alloc_to_v4(new, &new_a_convert);
-
-	bucket_journal_seq = new_a->journal_seq;
-
-	if ((flags & BTREE_TRIGGER_INSERT) &&
-	    data_type_is_empty(old_a->data_type) !=
-	    data_type_is_empty(new_a->data_type) &&
-	    new.k->type == KEY_TYPE_alloc_v4) {
-		struct bch_alloc_v4 *v = (struct bch_alloc_v4 *) new.v;
-
-		EBUG_ON(!journal_seq);
-
-		/*
-		 * If the btree updates referring to a bucket weren't flushed
-		 * before the bucket became empty again, then the we don't have
-		 * to wait on a journal flush before we can reuse the bucket:
-		 */
-		v->journal_seq = bucket_journal_seq =
-			data_type_is_empty(new_a->data_type) &&
-			(journal_seq == v->journal_seq ||
-			 bch2_journal_noflush_seq(&c->journal, v->journal_seq))
-			? 0 : journal_seq;
-	}
-
-	if (!data_type_is_empty(old_a->data_type) &&
-	    data_type_is_empty(new_a->data_type) &&
-	    bucket_journal_seq) {
-		ret = bch2_set_bucket_needs_journal_commit(&c->buckets_waiting_for_journal,
-				c->journal.flushed_seq_ondisk,
-				new.k->p.inode, new.k->p.offset,
-				bucket_journal_seq);
-		if (ret) {
-			bch2_fs_fatal_error(c,
-				"error setting bucket_needs_journal_commit: %i", ret);
-			return ret;
-		}
-	}
-
-	percpu_down_read(&c->mark_lock);
-	if (!gc && new_a->gen != old_a->gen)
-		*bucket_gen(ca, new.k->p.offset) = new_a->gen;
-
-	bch2_dev_usage_update(c, ca, *old_a, *new_a, journal_seq, gc);
-
-	if (gc) {
-		struct bucket *g = gc_bucket(ca, new.k->p.offset);
-
-		bucket_lock(g);
-
-		g->gen_valid		= 1;
-		g->gen			= new_a->gen;
-		g->data_type		= new_a->data_type;
-		g->stripe		= new_a->stripe;
-		g->stripe_redundancy	= new_a->stripe_redundancy;
-		g->dirty_sectors	= new_a->dirty_sectors;
-		g->cached_sectors	= new_a->cached_sectors;
-
-		bucket_unlock(g);
-	}
-	percpu_up_read(&c->mark_lock);
-
-	if (new_a->data_type == BCH_DATA_free &&
-	    (!new_a->journal_seq || new_a->journal_seq < c->journal.flushed_seq_ondisk))
-		closure_wake_up(&c->freelist_wait);
-
-	if (new_a->data_type == BCH_DATA_need_discard &&
-	    (!bucket_journal_seq || bucket_journal_seq < c->journal.flushed_seq_ondisk))
-		bch2_do_discards(c);
-
-	if (old_a->data_type != BCH_DATA_cached &&
-	    new_a->data_type == BCH_DATA_cached &&
-	    should_invalidate_buckets(ca, bch2_dev_usage_read(ca)))
-		bch2_do_invalidates(c);
-
-	if (new_a->data_type == BCH_DATA_need_gc_gens)
-		bch2_do_gc_gens(c);
-
-	return 0;
-}
-
 int bch2_mark_metadata_bucket(struct bch_fs *c, struct bch_dev *ca,
 			      size_t b, enum bch_data_type data_type,
 			      unsigned sectors, struct gc_pos pos,
@@ -652,17 +544,17 @@ int bch2_mark_metadata_bucket(struct bch_fs *c, struct bch_dev *ca,
 err:
 	bucket_unlock(g);
 	if (!ret)
-		bch2_dev_usage_update_m(c, ca, old, new);
+		bch2_dev_usage_update_m(c, ca, &old, &new);
 	percpu_up_read(&c->mark_lock);
 	return ret;
 }
 
-static int check_bucket_ref(struct btree_trans *trans,
-			    struct bkey_s_c k,
-			    const struct bch_extent_ptr *ptr,
-			    s64 sectors, enum bch_data_type ptr_data_type,
-			    u8 b_gen, u8 bucket_data_type,
-			    u32 bucket_sectors)
+int bch2_check_bucket_ref(struct btree_trans *trans,
+			  struct bkey_s_c k,
+			  const struct bch_extent_ptr *ptr,
+			  s64 sectors, enum bch_data_type ptr_data_type,
+			  u8 b_gen, u8 bucket_data_type,
+			  u32 bucket_sectors)
 {
 	struct bch_fs *c = trans->c;
 	struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
@@ -761,404 +653,6 @@ err:
 	goto out;
 }
 
-static int mark_stripe_bucket(struct btree_trans *trans,
-			      struct bkey_s_c k,
-			      unsigned ptr_idx,
-			      unsigned flags)
-{
-	struct bch_fs *c = trans->c;
-	const struct bch_stripe *s = bkey_s_c_to_stripe(k).v;
-	unsigned nr_data = s->nr_blocks - s->nr_redundant;
-	bool parity = ptr_idx >= nr_data;
-	enum bch_data_type data_type = parity ? BCH_DATA_parity : BCH_DATA_stripe;
-	s64 sectors = parity ? le16_to_cpu(s->sectors) : 0;
-	const struct bch_extent_ptr *ptr = s->ptrs + ptr_idx;
-	struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
-	struct bucket old, new, *g;
-	struct printbuf buf = PRINTBUF;
-	int ret = 0;
-
-	BUG_ON(!(flags & BTREE_TRIGGER_GC));
-
-	/* * XXX doesn't handle deletion */
-
-	percpu_down_read(&c->mark_lock);
-	g = PTR_GC_BUCKET(ca, ptr);
-
-	if (g->dirty_sectors ||
-	    (g->stripe && g->stripe != k.k->p.offset)) {
-		bch2_fs_inconsistent(c,
-			      "bucket %u:%zu gen %u: multiple stripes using same bucket\n%s",
-			      ptr->dev, PTR_BUCKET_NR(ca, ptr), g->gen,
-			      (bch2_bkey_val_to_text(&buf, c, k), buf.buf));
-		ret = -EINVAL;
-		goto err;
-	}
-
-	bucket_lock(g);
-	old = *g;
-
-	ret = check_bucket_ref(trans, k, ptr, sectors, data_type,
-			       g->gen, g->data_type,
-			       g->dirty_sectors);
-	if (ret)
-		goto err;
-
-	g->data_type = data_type;
-	g->dirty_sectors += sectors;
-
-	g->stripe		= k.k->p.offset;
-	g->stripe_redundancy	= s->nr_redundant;
-	new = *g;
-err:
-	bucket_unlock(g);
-	if (!ret)
-		bch2_dev_usage_update_m(c, ca, old, new);
-	percpu_up_read(&c->mark_lock);
-	printbuf_exit(&buf);
-	return ret;
-}
-
-static int __mark_pointer(struct btree_trans *trans,
-			  struct bkey_s_c k,
-			  const struct bch_extent_ptr *ptr,
-			  s64 sectors, enum bch_data_type ptr_data_type,
-			  u8 bucket_gen, u8 *bucket_data_type,
-			  u32 *dirty_sectors, u32 *cached_sectors)
-{
-	u32 *dst_sectors = !ptr->cached
-		? dirty_sectors
-		: cached_sectors;
-	int ret = check_bucket_ref(trans, k, ptr, sectors, ptr_data_type,
-				   bucket_gen, *bucket_data_type, *dst_sectors);
-
-	if (ret)
-		return ret;
-
-	*dst_sectors += sectors;
-
-	if (!*dirty_sectors && !*cached_sectors)
-		*bucket_data_type = 0;
-	else if (*bucket_data_type != BCH_DATA_stripe)
-		*bucket_data_type = ptr_data_type;
-
-	return 0;
-}
-
-static int bch2_mark_pointer(struct btree_trans *trans,
-			     enum btree_id btree_id, unsigned level,
-			     struct bkey_s_c k,
-			     struct extent_ptr_decoded p,
-			     s64 sectors,
-			     unsigned flags)
-{
-	struct bch_fs *c = trans->c;
-	struct bch_dev *ca = bch_dev_bkey_exists(c, p.ptr.dev);
-	struct bucket old, new, *g;
-	enum bch_data_type data_type = bkey_ptr_data_type(btree_id, level, k, p);
-	u8 bucket_data_type;
-	int ret = 0;
-
-	BUG_ON(!(flags & BTREE_TRIGGER_GC));
-
-	percpu_down_read(&c->mark_lock);
-	g = PTR_GC_BUCKET(ca, &p.ptr);
-	bucket_lock(g);
-	old = *g;
-
-	bucket_data_type = g->data_type;
-	ret = __mark_pointer(trans, k, &p.ptr, sectors,
-			     data_type, g->gen,
-			     &bucket_data_type,
-			     &g->dirty_sectors,
-			     &g->cached_sectors);
-	if (!ret)
-		g->data_type = bucket_data_type;
-
-	new = *g;
-	bucket_unlock(g);
-	if (!ret)
-		bch2_dev_usage_update_m(c, ca, old, new);
-	percpu_up_read(&c->mark_lock);
-
-	return ret;
-}
-
-static int bch2_mark_stripe_ptr(struct btree_trans *trans,
-				struct bkey_s_c k,
-				struct bch_extent_stripe_ptr p,
-				enum bch_data_type data_type,
-				s64 sectors,
-				unsigned flags)
-{
-	struct bch_fs *c = trans->c;
-	struct bch_replicas_padded r;
-	struct gc_stripe *m;
-
-	BUG_ON(!(flags & BTREE_TRIGGER_GC));
-
-	m = genradix_ptr_alloc(&c->gc_stripes, p.idx, GFP_KERNEL);
-	if (!m) {
-		bch_err(c, "error allocating memory for gc_stripes, idx %llu",
-			(u64) p.idx);
-		return -BCH_ERR_ENOMEM_mark_stripe_ptr;
-	}
-
-	mutex_lock(&c->ec_stripes_heap_lock);
-
-	if (!m || !m->alive) {
-		mutex_unlock(&c->ec_stripes_heap_lock);
-		bch_err_ratelimited(c, "pointer to nonexistent stripe %llu",
-				    (u64) p.idx);
-		bch2_inconsistent_error(c);
-		return -EIO;
-	}
-
-	m->block_sectors[p.block] += sectors;
-
-	r = m->r;
-	mutex_unlock(&c->ec_stripes_heap_lock);
-
-	r.e.data_type = data_type;
-	update_replicas(c, k, &r.e, sectors, trans->journal_res.seq, true);
-
-	return 0;
-}
-
-static int __mark_extent(struct btree_trans *trans,
-			 enum btree_id btree_id, unsigned level,
-			 struct bkey_s_c k, unsigned flags)
-{
-	u64 journal_seq = trans->journal_res.seq;
-	struct bch_fs *c = trans->c;
-	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const union bch_extent_entry *entry;
-	struct extent_ptr_decoded p;
-	struct bch_replicas_padded r;
-	enum bch_data_type data_type = bkey_is_btree_ptr(k.k)
-		? BCH_DATA_btree
-		: BCH_DATA_user;
-	s64 sectors = bkey_is_btree_ptr(k.k)
-		? btree_sectors(c)
-		: k.k->size;
-	s64 dirty_sectors = 0;
-	bool stale;
-	int ret;
-
-	BUG_ON(!(flags & BTREE_TRIGGER_GC));
-
-	r.e.data_type	= data_type;
-	r.e.nr_devs	= 0;
-	r.e.nr_required	= 1;
-
-	bkey_for_each_ptr_decode(k.k, ptrs, p, entry) {
-		s64 disk_sectors = ptr_disk_sectors(sectors, p);
-
-		if (flags & BTREE_TRIGGER_OVERWRITE)
-			disk_sectors = -disk_sectors;
-
-		ret = bch2_mark_pointer(trans, btree_id, level, k, p, disk_sectors, flags);
-		if (ret < 0)
-			return ret;
-
-		stale = ret > 0;
-
-		if (p.ptr.cached) {
-			if (!stale) {
-				ret = update_cached_sectors(c, k, p.ptr.dev,
-						disk_sectors, journal_seq, true);
-				if (ret) {
-					bch2_fs_fatal_error(c, "%s(): no replicas entry while updating cached sectors",
-							    __func__);
-					return ret;
-				}
-			}
-		} else if (!p.has_ec) {
-			dirty_sectors	       += disk_sectors;
-			r.e.devs[r.e.nr_devs++]	= p.ptr.dev;
-		} else {
-			ret = bch2_mark_stripe_ptr(trans, k, p.ec, data_type,
-					disk_sectors, flags);
-			if (ret)
-				return ret;
-
-			/*
-			 * There may be other dirty pointers in this extent, but
-			 * if so they're not required for mounting if we have an
-			 * erasure coded pointer in this extent:
-			 */
-			r.e.nr_required = 0;
-		}
-	}
-
-	if (r.e.nr_devs) {
-		ret = update_replicas(c, k, &r.e, dirty_sectors, journal_seq, true);
-		if (ret) {
-			struct printbuf buf = PRINTBUF;
-
-			bch2_bkey_val_to_text(&buf, c, k);
-			bch2_fs_fatal_error(c, "%s(): no replicas entry for %s", __func__, buf.buf);
-			printbuf_exit(&buf);
-			return ret;
-		}
-	}
-
-	return 0;
-}
-
-int bch2_mark_extent(struct btree_trans *trans,
-		     enum btree_id btree_id, unsigned level,
-		     struct bkey_s_c old, struct bkey_s_c new,
-		     unsigned flags)
-{
-	return mem_trigger_run_overwrite_then_insert(__mark_extent, trans, btree_id, level, old, new, flags);
-}
-
-int bch2_mark_stripe(struct btree_trans *trans,
-		     enum btree_id btree_id, unsigned level,
-		     struct bkey_s_c old, struct bkey_s_c new,
-		     unsigned flags)
-{
-	bool gc = flags & BTREE_TRIGGER_GC;
-	u64 journal_seq = trans->journal_res.seq;
-	struct bch_fs *c = trans->c;
-	u64 idx = new.k->p.offset;
-	const struct bch_stripe *old_s = old.k->type == KEY_TYPE_stripe
-		? bkey_s_c_to_stripe(old).v : NULL;
-	const struct bch_stripe *new_s = new.k->type == KEY_TYPE_stripe
-		? bkey_s_c_to_stripe(new).v : NULL;
-	unsigned i;
-	int ret;
-
-	BUG_ON(gc && old_s);
-
-	if (!gc) {
-		struct stripe *m = genradix_ptr(&c->stripes, idx);
-
-		if (!m) {
-			struct printbuf buf1 = PRINTBUF;
-			struct printbuf buf2 = PRINTBUF;
-
-			bch2_bkey_val_to_text(&buf1, c, old);
-			bch2_bkey_val_to_text(&buf2, c, new);
-			bch_err_ratelimited(c, "error marking nonexistent stripe %llu while marking\n"
-					    "old %s\n"
-					    "new %s", idx, buf1.buf, buf2.buf);
-			printbuf_exit(&buf2);
-			printbuf_exit(&buf1);
-			bch2_inconsistent_error(c);
-			return -1;
-		}
-
-		if (!new_s) {
-			bch2_stripes_heap_del(c, m, idx);
-
-			memset(m, 0, sizeof(*m));
-		} else {
-			m->sectors	= le16_to_cpu(new_s->sectors);
-			m->algorithm	= new_s->algorithm;
-			m->nr_blocks	= new_s->nr_blocks;
-			m->nr_redundant	= new_s->nr_redundant;
-			m->blocks_nonempty = 0;
-
-			for (i = 0; i < new_s->nr_blocks; i++)
-				m->blocks_nonempty += !!stripe_blockcount_get(new_s, i);
-
-			if (!old_s)
-				bch2_stripes_heap_insert(c, m, idx);
-			else
-				bch2_stripes_heap_update(c, m, idx);
-		}
-	} else {
-		struct gc_stripe *m =
-			genradix_ptr_alloc(&c->gc_stripes, idx, GFP_KERNEL);
-
-		if (!m) {
-			bch_err(c, "error allocating memory for gc_stripes, idx %llu",
-				idx);
-			return -BCH_ERR_ENOMEM_mark_stripe;
-		}
-		/*
-		 * This will be wrong when we bring back runtime gc: we should
-		 * be unmarking the old key and then marking the new key
-		 */
-		m->alive	= true;
-		m->sectors	= le16_to_cpu(new_s->sectors);
-		m->nr_blocks	= new_s->nr_blocks;
-		m->nr_redundant	= new_s->nr_redundant;
-
-		for (i = 0; i < new_s->nr_blocks; i++)
-			m->ptrs[i] = new_s->ptrs[i];
-
-		bch2_bkey_to_replicas(&m->r.e, new);
-
-		/*
-		 * gc recalculates this field from stripe ptr
-		 * references:
-		 */
-		memset(m->block_sectors, 0, sizeof(m->block_sectors));
-
-		for (i = 0; i < new_s->nr_blocks; i++) {
-			ret = mark_stripe_bucket(trans, new, i, flags);
-			if (ret)
-				return ret;
-		}
-
-		ret = update_replicas(c, new, &m->r.e,
-				      ((s64) m->sectors * m->nr_redundant),
-				      journal_seq, gc);
-		if (ret) {
-			struct printbuf buf = PRINTBUF;
-
-			bch2_bkey_val_to_text(&buf, c, new);
-			bch2_fs_fatal_error(c, "no replicas entry for %s", buf.buf);
-			printbuf_exit(&buf);
-			return ret;
-		}
-	}
-
-	return 0;
-}
-
-static int __mark_reservation(struct btree_trans *trans,
-			      enum btree_id btree_id, unsigned level,
-			      struct bkey_s_c k, unsigned flags)
-{
-	struct bch_fs *c = trans->c;
-	struct bch_fs_usage *fs_usage;
-	unsigned replicas = bkey_s_c_to_reservation(k).v->nr_replicas;
-	s64 sectors = (s64) k.k->size;
-
-	BUG_ON(!(flags & BTREE_TRIGGER_GC));
-
-	if (flags & BTREE_TRIGGER_OVERWRITE)
-		sectors = -sectors;
-	sectors *= replicas;
-
-	percpu_down_read(&c->mark_lock);
-	preempt_disable();
-
-	fs_usage = fs_usage_ptr(c, trans->journal_res.seq, flags & BTREE_TRIGGER_GC);
-	replicas = clamp_t(unsigned, replicas, 1,
-			   ARRAY_SIZE(fs_usage->persistent_reserved));
-
-	fs_usage->reserved				+= sectors;
-	fs_usage->persistent_reserved[replicas - 1]	+= sectors;
-
-	preempt_enable();
-	percpu_up_read(&c->mark_lock);
-
-	return 0;
-}
-
-int bch2_mark_reservation(struct btree_trans *trans,
-			  enum btree_id btree_id, unsigned level,
-			  struct bkey_s_c old, struct bkey_s_c new,
-			  unsigned flags)
-{
-	return mem_trigger_run_overwrite_then_insert(__mark_reservation, trans, btree_id, level, old, new, flags);
-}
-
 void bch2_trans_fs_usage_revert(struct btree_trans *trans,
 				struct replicas_delta_list *deltas)
 {
@@ -1278,92 +772,184 @@ need_mark:
 	return -1;
 }
 
-/* trans_mark: */
+/* KEY_TYPE_extent: */
+
+static int __mark_pointer(struct btree_trans *trans,
+			  struct bkey_s_c k,
+			  const struct bch_extent_ptr *ptr,
+			  s64 sectors, enum bch_data_type ptr_data_type,
+			  u8 bucket_gen, u8 *bucket_data_type,
+			  u32 *dirty_sectors, u32 *cached_sectors)
+{
+	u32 *dst_sectors = !ptr->cached
+		? dirty_sectors
+		: cached_sectors;
+	int ret = bch2_check_bucket_ref(trans, k, ptr, sectors, ptr_data_type,
+				   bucket_gen, *bucket_data_type, *dst_sectors);
+
+	if (ret)
+		return ret;
+
+	*dst_sectors += sectors;
+
+	if (!*dirty_sectors && !*cached_sectors)
+		*bucket_data_type = 0;
+	else if (*bucket_data_type != BCH_DATA_stripe)
+		*bucket_data_type = ptr_data_type;
+
+	return 0;
+}
 
-static inline int bch2_trans_mark_pointer(struct btree_trans *trans,
-				   enum btree_id btree_id, unsigned level,
-				   struct bkey_s_c k, struct extent_ptr_decoded p,
-				   unsigned flags)
+static int bch2_trigger_pointer(struct btree_trans *trans,
+			enum btree_id btree_id, unsigned level,
+			struct bkey_s_c k, struct extent_ptr_decoded p,
+			s64 *sectors,
+			unsigned flags)
 {
 	bool insert = !(flags & BTREE_TRIGGER_OVERWRITE);
-	struct btree_iter iter;
-	struct bkey_i_alloc_v4 *a;
 	struct bpos bucket;
 	struct bch_backpointer bp;
-	s64 sectors;
-	int ret;
 
 	bch2_extent_ptr_to_bp(trans->c, btree_id, level, k, p, &bucket, &bp);
-	sectors = bp.bucket_len;
-	if (!insert)
-		sectors = -sectors;
-
-	a = bch2_trans_start_alloc_update(trans, &iter, bucket);
-	if (IS_ERR(a))
-		return PTR_ERR(a);
+	*sectors = insert ? bp.bucket_len : -((s64) bp.bucket_len);
 
-	ret = __mark_pointer(trans, k, &p.ptr, sectors, bp.data_type,
-			     a->v.gen, &a->v.data_type,
-			     &a->v.dirty_sectors, &a->v.cached_sectors) ?:
-		bch2_trans_update(trans, &iter, &a->k_i, 0);
-	bch2_trans_iter_exit(trans, &iter);
+	if (flags & BTREE_TRIGGER_TRANSACTIONAL) {
+		struct btree_iter iter;
+		struct bkey_i_alloc_v4 *a = bch2_trans_start_alloc_update(trans, &iter, bucket);
+		int ret = PTR_ERR_OR_ZERO(a);
+		if (ret)
+			return ret;
 
-	if (ret)
-		return ret;
+		ret = __mark_pointer(trans, k, &p.ptr, *sectors, bp.data_type,
+				     a->v.gen, &a->v.data_type,
+				     &a->v.dirty_sectors, &a->v.cached_sectors) ?:
+			bch2_trans_update(trans, &iter, &a->k_i, 0);
+		bch2_trans_iter_exit(trans, &iter);
 
-	if (!p.ptr.cached) {
-		ret = bch2_bucket_backpointer_mod(trans, bucket, bp, k, insert);
 		if (ret)
 			return ret;
+
+		if (!p.ptr.cached) {
+			ret = bch2_bucket_backpointer_mod(trans, bucket, bp, k, insert);
+			if (ret)
+				return ret;
+		}
+	}
+
+	if (flags & BTREE_TRIGGER_GC) {
+		struct bch_fs *c = trans->c;
+		struct bch_dev *ca = bch_dev_bkey_exists(c, p.ptr.dev);
+		enum bch_data_type data_type = bkey_ptr_data_type(btree_id, level, k, p);
+
+		percpu_down_read(&c->mark_lock);
+		struct bucket *g = PTR_GC_BUCKET(ca, &p.ptr);
+		bucket_lock(g);
+		struct bucket old = *g;
+
+		u8 bucket_data_type = g->data_type;
+		int ret = __mark_pointer(trans, k, &p.ptr, *sectors,
+				     data_type, g->gen,
+				     &bucket_data_type,
+				     &g->dirty_sectors,
+				     &g->cached_sectors);
+		if (ret) {
+			bucket_unlock(g);
+			percpu_up_read(&c->mark_lock);
+			return ret;
+		}
+
+		g->data_type = bucket_data_type;
+		struct bucket new = *g;
+		bucket_unlock(g);
+		bch2_dev_usage_update_m(c, ca, &old, &new);
+		percpu_up_read(&c->mark_lock);
 	}
 
 	return 0;
 }
 
-static int bch2_trans_mark_stripe_ptr(struct btree_trans *trans,
-			struct extent_ptr_decoded p,
-			s64 sectors, enum bch_data_type data_type)
+static int bch2_trigger_stripe_ptr(struct btree_trans *trans,
+				struct bkey_s_c k,
+				struct extent_ptr_decoded p,
+				enum bch_data_type data_type,
+				s64 sectors, unsigned flags)
 {
-	struct btree_iter iter;
-	struct bkey_i_stripe *s;
-	struct bch_replicas_padded r;
-	int ret = 0;
+	if (flags & BTREE_TRIGGER_TRANSACTIONAL) {
+		struct btree_iter iter;
+		struct bkey_i_stripe *s = bch2_bkey_get_mut_typed(trans, &iter,
+				BTREE_ID_stripes, POS(0, p.ec.idx),
+				BTREE_ITER_WITH_UPDATES, stripe);
+		int ret = PTR_ERR_OR_ZERO(s);
+		if (unlikely(ret)) {
+			bch2_trans_inconsistent_on(bch2_err_matches(ret, ENOENT), trans,
+				"pointer to nonexistent stripe %llu",
+				(u64) p.ec.idx);
+			goto err;
+		}
 
-	s = bch2_bkey_get_mut_typed(trans, &iter,
-			BTREE_ID_stripes, POS(0, p.ec.idx),
-			BTREE_ITER_WITH_UPDATES, stripe);
-	ret = PTR_ERR_OR_ZERO(s);
-	if (unlikely(ret)) {
-		bch2_trans_inconsistent_on(bch2_err_matches(ret, ENOENT), trans,
-			"pointer to nonexistent stripe %llu",
-			(u64) p.ec.idx);
-		goto err;
-	}
+		if (!bch2_ptr_matches_stripe(&s->v, p)) {
+			bch2_trans_inconsistent(trans,
+				"stripe pointer doesn't match stripe %llu",
+				(u64) p.ec.idx);
+			ret = -EIO;
+			goto err;
+		}
 
-	if (!bch2_ptr_matches_stripe(&s->v, p)) {
-		bch2_trans_inconsistent(trans,
-			"stripe pointer doesn't match stripe %llu",
-			(u64) p.ec.idx);
-		ret = -EIO;
-		goto err;
+		stripe_blockcount_set(&s->v, p.ec.block,
+			stripe_blockcount_get(&s->v, p.ec.block) +
+			sectors);
+
+		struct bch_replicas_padded r;
+		bch2_bkey_to_replicas(&r.e, bkey_i_to_s_c(&s->k_i));
+		r.e.data_type = data_type;
+		ret = bch2_update_replicas_list(trans, &r.e, sectors);
+err:
+		bch2_trans_iter_exit(trans, &iter);
+		return ret;
 	}
 
-	stripe_blockcount_set(&s->v, p.ec.block,
-		stripe_blockcount_get(&s->v, p.ec.block) +
-		sectors);
+	if (flags & BTREE_TRIGGER_GC) {
+		struct bch_fs *c = trans->c;
 
-	bch2_bkey_to_replicas(&r.e, bkey_i_to_s_c(&s->k_i));
-	r.e.data_type = data_type;
-	ret = bch2_update_replicas_list(trans, &r.e, sectors);
-err:
-	bch2_trans_iter_exit(trans, &iter);
-	return ret;
+		BUG_ON(!(flags & BTREE_TRIGGER_GC));
+
+		struct gc_stripe *m = genradix_ptr_alloc(&c->gc_stripes, p.ec.idx, GFP_KERNEL);
+		if (!m) {
+			bch_err(c, "error allocating memory for gc_stripes, idx %llu",
+				(u64) p.ec.idx);
+			return -BCH_ERR_ENOMEM_mark_stripe_ptr;
+		}
+
+		mutex_lock(&c->ec_stripes_heap_lock);
+
+		if (!m || !m->alive) {
+			mutex_unlock(&c->ec_stripes_heap_lock);
+			struct printbuf buf = PRINTBUF;
+			bch2_bkey_val_to_text(&buf, c, k);
+			bch_err_ratelimited(c, "pointer to nonexistent stripe %llu\n  while marking %s",
+					    (u64) p.ec.idx, buf.buf);
+			printbuf_exit(&buf);
+			bch2_inconsistent_error(c);
+			return -EIO;
+		}
+
+		m->block_sectors[p.ec.block] += sectors;
+
+		struct bch_replicas_padded r = m->r;
+		mutex_unlock(&c->ec_stripes_heap_lock);
+
+		r.e.data_type = data_type;
+		bch2_update_replicas(c, k, &r.e, sectors, trans->journal_res.seq, true);
+	}
+
+	return 0;
 }
 
-static int __trans_mark_extent(struct btree_trans *trans,
-			       enum btree_id btree_id, unsigned level,
-			       struct bkey_s_c k, unsigned flags)
+static int __trigger_extent(struct btree_trans *trans,
+			    enum btree_id btree_id, unsigned level,
+			    struct bkey_s_c k, unsigned flags)
 {
+	bool gc = flags & BTREE_TRIGGER_GC;
 	struct bch_fs *c = trans->c;
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
 	const union bch_extent_entry *entry;
@@ -1372,11 +958,7 @@ static int __trans_mark_extent(struct btree_trans *trans,
 	enum bch_data_type data_type = bkey_is_btree_ptr(k.k)
 		? BCH_DATA_btree
 		: BCH_DATA_user;
-	s64 sectors = bkey_is_btree_ptr(k.k)
-		? btree_sectors(c)
-		: k.k->size;
 	s64 dirty_sectors = 0;
-	bool stale;
 	int ret = 0;
 
 	r.e.data_type	= data_type;
@@ -1384,21 +966,20 @@ static int __trans_mark_extent(struct btree_trans *trans,
 	r.e.nr_required	= 1;
 
 	bkey_for_each_ptr_decode(k.k, ptrs, p, entry) {
-		s64 disk_sectors = ptr_disk_sectors(sectors, p);
-
-		if (flags & BTREE_TRIGGER_OVERWRITE)
-			disk_sectors = -disk_sectors;
-
-		ret = bch2_trans_mark_pointer(trans, btree_id, level, k, p, flags);
+		s64 disk_sectors;
+		ret = bch2_trigger_pointer(trans, btree_id, level, k, p, &disk_sectors, flags);
 		if (ret < 0)
 			return ret;
 
-		stale = ret > 0;
+		bool stale = ret > 0;
 
 		if (p.ptr.cached) {
 			if (!stale) {
-				ret = bch2_update_cached_sectors_list(trans, p.ptr.dev,
-								      disk_sectors);
+				ret = !gc
+					? bch2_update_cached_sectors_list(trans, p.ptr.dev, disk_sectors)
+					: update_cached_sectors(c, k, p.ptr.dev, disk_sectors, 0, true);
+				bch2_fs_fatal_err_on(ret && gc, c, "%s(): no replicas entry while updating cached sectors",
+						     __func__);
 				if (ret)
 					return ret;
 			}
@@ -1406,226 +987,111 @@ static int __trans_mark_extent(struct btree_trans *trans,
 			dirty_sectors	       += disk_sectors;
 			r.e.devs[r.e.nr_devs++]	= p.ptr.dev;
 		} else {
-			ret = bch2_trans_mark_stripe_ptr(trans, p,
-					disk_sectors, data_type);
+			ret = bch2_trigger_stripe_ptr(trans, k, p, data_type, disk_sectors, flags);
 			if (ret)
 				return ret;
 
+			/*
+			 * There may be other dirty pointers in this extent, but
+			 * if so they're not required for mounting if we have an
+			 * erasure coded pointer in this extent:
+			 */
 			r.e.nr_required = 0;
 		}
 	}
 
-	if (r.e.nr_devs)
-		ret = bch2_update_replicas_list(trans, &r.e, dirty_sectors);
-
-	return ret;
-}
-
-int bch2_trans_mark_extent(struct btree_trans *trans,
-			   enum btree_id btree_id, unsigned level,
-			   struct bkey_s_c old, struct bkey_i *new,
-			   unsigned flags)
-{
-	struct bch_fs *c = trans->c;
-	int mod = (int) bch2_bkey_needs_rebalance(c, bkey_i_to_s_c(new)) -
-		  (int) bch2_bkey_needs_rebalance(c, old);
+	if (r.e.nr_devs) {
+		ret = !gc
+			? bch2_update_replicas_list(trans, &r.e, dirty_sectors)
+			: bch2_update_replicas(c, k, &r.e, dirty_sectors, 0, true);
+		if (unlikely(ret && gc)) {
+			struct printbuf buf = PRINTBUF;
 
-	if (mod) {
-		int ret = bch2_btree_bit_mod(trans, BTREE_ID_rebalance_work, new->k.p, mod > 0);
+			bch2_bkey_val_to_text(&buf, c, k);
+			bch2_fs_fatal_error(c, "%s(): no replicas entry for %s", __func__, buf.buf);
+			printbuf_exit(&buf);
+		}
 		if (ret)
 			return ret;
 	}
 
-	return trigger_run_overwrite_then_insert(__trans_mark_extent, trans, btree_id, level, old, new, flags);
+	return 0;
 }
 
-static int bch2_trans_mark_stripe_bucket(struct btree_trans *trans,
-					 struct bkey_s_c_stripe s,
-					 unsigned idx, bool deleting)
+int bch2_trigger_extent(struct btree_trans *trans,
+			enum btree_id btree_id, unsigned level,
+			struct bkey_s_c old, struct bkey_s new,
+			unsigned flags)
 {
-	struct bch_fs *c = trans->c;
-	const struct bch_extent_ptr *ptr = &s.v->ptrs[idx];
-	struct btree_iter iter;
-	struct bkey_i_alloc_v4 *a;
-	enum bch_data_type data_type = idx >= s.v->nr_blocks - s.v->nr_redundant
-		? BCH_DATA_parity : 0;
-	s64 sectors = data_type ? le16_to_cpu(s.v->sectors) : 0;
-	int ret = 0;
-
-	if (deleting)
-		sectors = -sectors;
-
-	a = bch2_trans_start_alloc_update(trans, &iter, PTR_BUCKET_POS(c, ptr));
-	if (IS_ERR(a))
-		return PTR_ERR(a);
-
-	ret = check_bucket_ref(trans, s.s_c, ptr, sectors, data_type,
-			       a->v.gen, a->v.data_type,
-			       a->v.dirty_sectors);
-	if (ret)
-		goto err;
-
-	if (!deleting) {
-		if (bch2_trans_inconsistent_on(a->v.stripe ||
-					       a->v.stripe_redundancy, trans,
-				"bucket %llu:%llu gen %u data type %s dirty_sectors %u: multiple stripes using same bucket (%u, %llu)",
-				iter.pos.inode, iter.pos.offset, a->v.gen,
-				bch2_data_types[a->v.data_type],
-				a->v.dirty_sectors,
-				a->v.stripe, s.k->p.offset)) {
-			ret = -EIO;
-			goto err;
-		}
-
-		if (bch2_trans_inconsistent_on(data_type && a->v.dirty_sectors, trans,
-				"bucket %llu:%llu gen %u data type %s dirty_sectors %u: data already in stripe bucket %llu",
-				iter.pos.inode, iter.pos.offset, a->v.gen,
-				bch2_data_types[a->v.data_type],
-				a->v.dirty_sectors,
-				s.k->p.offset)) {
-			ret = -EIO;
-			goto err;
-		}
+	if (flags & BTREE_TRIGGER_TRANSACTIONAL) {
+		struct bch_fs *c = trans->c;
+		int mod = (int) bch2_bkey_needs_rebalance(c, new.s_c) -
+			  (int) bch2_bkey_needs_rebalance(c, old);
 
-		a->v.stripe		= s.k->p.offset;
-		a->v.stripe_redundancy	= s.v->nr_redundant;
-		a->v.data_type		= BCH_DATA_stripe;
-	} else {
-		if (bch2_trans_inconsistent_on(a->v.stripe != s.k->p.offset ||
-					       a->v.stripe_redundancy != s.v->nr_redundant, trans,
-				"bucket %llu:%llu gen %u: not marked as stripe when deleting stripe %llu (got %u)",
-				iter.pos.inode, iter.pos.offset, a->v.gen,
-				s.k->p.offset, a->v.stripe)) {
-			ret = -EIO;
-			goto err;
+		if (mod) {
+			int ret = bch2_btree_bit_mod(trans, BTREE_ID_rebalance_work, new.k->p, mod > 0);
+			if (ret)
+				return ret;
 		}
-
-		a->v.stripe		= 0;
-		a->v.stripe_redundancy	= 0;
-		a->v.data_type		= alloc_data_type(a->v, BCH_DATA_user);
 	}
 
-	a->v.dirty_sectors += sectors;
-	if (data_type)
-		a->v.data_type = !deleting ? data_type : 0;
+	if (flags & (BTREE_TRIGGER_TRANSACTIONAL|BTREE_TRIGGER_GC))
+		return trigger_run_overwrite_then_insert(__trigger_extent, trans, btree_id, level, old, new, flags);
 
-	ret = bch2_trans_update(trans, &iter, &a->k_i, 0);
-	if (ret)
-		goto err;
-err:
-	bch2_trans_iter_exit(trans, &iter);
-	return ret;
+	return 0;
 }
 
-int bch2_trans_mark_stripe(struct btree_trans *trans,
-			   enum btree_id btree_id, unsigned level,
-			   struct bkey_s_c old, struct bkey_i *new,
-			   unsigned flags)
-{
-	const struct bch_stripe *old_s = NULL;
-	struct bch_stripe *new_s = NULL;
-	struct bch_replicas_padded r;
-	unsigned i, nr_blocks;
-	int ret = 0;
-
-	if (old.k->type == KEY_TYPE_stripe)
-		old_s = bkey_s_c_to_stripe(old).v;
-	if (new->k.type == KEY_TYPE_stripe)
-		new_s = &bkey_i_to_stripe(new)->v;
-
-	/*
-	 * If the pointers aren't changing, we don't need to do anything:
-	 */
-	if (new_s && old_s &&
-	    new_s->nr_blocks	== old_s->nr_blocks &&
-	    new_s->nr_redundant	== old_s->nr_redundant &&
-	    !memcmp(old_s->ptrs, new_s->ptrs,
-		    new_s->nr_blocks * sizeof(struct bch_extent_ptr)))
-		return 0;
+/* KEY_TYPE_reservation */
 
-	BUG_ON(new_s && old_s &&
-	       (new_s->nr_blocks	!= old_s->nr_blocks ||
-		new_s->nr_redundant	!= old_s->nr_redundant));
-
-	nr_blocks = new_s ? new_s->nr_blocks : old_s->nr_blocks;
-
-	if (new_s) {
-		s64 sectors = le16_to_cpu(new_s->sectors);
-
-		bch2_bkey_to_replicas(&r.e, bkey_i_to_s_c(new));
-		ret = bch2_update_replicas_list(trans, &r.e, sectors * new_s->nr_redundant);
-		if (ret)
-			return ret;
-	}
+static int __trigger_reservation(struct btree_trans *trans,
+				 enum btree_id btree_id, unsigned level,
+				 struct bkey_s_c k, unsigned flags)
+{
+	struct bch_fs *c = trans->c;
+	unsigned replicas = bkey_s_c_to_reservation(k).v->nr_replicas;
+	s64 sectors = (s64) k.k->size * replicas;
 
-	if (old_s) {
-		s64 sectors = -((s64) le16_to_cpu(old_s->sectors));
+	if (flags & BTREE_TRIGGER_OVERWRITE)
+		sectors = -sectors;
 
-		bch2_bkey_to_replicas(&r.e, old);
-		ret = bch2_update_replicas_list(trans, &r.e, sectors * old_s->nr_redundant);
+	if (flags & BTREE_TRIGGER_TRANSACTIONAL) {
+		int ret = bch2_replicas_deltas_realloc(trans, 0);
 		if (ret)
 			return ret;
-	}
-
-	for (i = 0; i < nr_blocks; i++) {
-		if (new_s && old_s &&
-		    !memcmp(&new_s->ptrs[i],
-			    &old_s->ptrs[i],
-			    sizeof(new_s->ptrs[i])))
-			continue;
 
-		if (new_s) {
-			ret = bch2_trans_mark_stripe_bucket(trans,
-					bkey_i_to_s_c_stripe(new), i, false);
-			if (ret)
-				break;
-		}
+		struct replicas_delta_list *d = trans->fs_usage_deltas;
+		replicas = min(replicas, ARRAY_SIZE(d->persistent_reserved));
 
-		if (old_s) {
-			ret = bch2_trans_mark_stripe_bucket(trans,
-					bkey_s_c_to_stripe(old), i, true);
-			if (ret)
-				break;
-		}
+		d->persistent_reserved[replicas - 1] += sectors;
 	}
 
-	return ret;
-}
-
-static int __trans_mark_reservation(struct btree_trans *trans,
-				    enum btree_id btree_id, unsigned level,
-				    struct bkey_s_c k, unsigned flags)
-{
-	unsigned replicas = bkey_s_c_to_reservation(k).v->nr_replicas;
-	s64 sectors = (s64) k.k->size;
-	struct replicas_delta_list *d;
-	int ret;
+	if (flags & BTREE_TRIGGER_GC) {
+		percpu_down_read(&c->mark_lock);
+		preempt_disable();
 
-	if (flags & BTREE_TRIGGER_OVERWRITE)
-		sectors = -sectors;
-	sectors *= replicas;
+		struct bch_fs_usage *fs_usage = this_cpu_ptr(c->usage_gc);
 
-	ret = bch2_replicas_deltas_realloc(trans, 0);
-	if (ret)
-		return ret;
+		replicas = min(replicas, ARRAY_SIZE(fs_usage->persistent_reserved));
+		fs_usage->reserved				+= sectors;
+		fs_usage->persistent_reserved[replicas - 1]	+= sectors;
 
-	d = trans->fs_usage_deltas;
-	replicas = clamp_t(unsigned, replicas, 1,
-			   ARRAY_SIZE(d->persistent_reserved));
+		preempt_enable();
+		percpu_up_read(&c->mark_lock);
+	}
 
-	d->persistent_reserved[replicas - 1] += sectors;
 	return 0;
 }
 
-int bch2_trans_mark_reservation(struct btree_trans *trans,
-				enum btree_id btree_id, unsigned level,
-				struct bkey_s_c old,
-				struct bkey_i *new,
-				unsigned flags)
+int bch2_trigger_reservation(struct btree_trans *trans,
+			  enum btree_id btree_id, unsigned level,
+			  struct bkey_s_c old, struct bkey_s new,
+			  unsigned flags)
 {
-	return trigger_run_overwrite_then_insert(__trans_mark_reservation, trans, btree_id, level, old, new, flags);
+	return trigger_run_overwrite_then_insert(__trigger_reservation, trans, btree_id, level, old, new, flags);
 }
 
+/* Mark superblocks: */
+
 static int __bch2_trans_mark_metadata_bucket(struct btree_trans *trans,
 				    struct bch_dev *ca, size_t b,
 				    enum bch_data_type type,