[PATCH 2/3] vinyl: link all indexes of the same space

[Vladimir Davydov <vdavydov.dev@gmail.com>]

After generating a deferred DELETE, we need to insert it into all
secondary indexes. Let's link all LSM trees of the same space into
a list so that we can iterate over secondary indexes of a space
given the primary index.

Needed for #2129
---
 src/box/vinyl.c  | 1 +
 src/box/vy_lsm.c | 7 ++++++-
 src/box/vy_lsm.h | 2 ++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/box/vinyl.c b/src/box/vinyl.c
index 2d1a6fc0..ba875040 100644
--- a/src/box/vinyl.c
+++ b/src/box/vinyl.c
@@ -1148,6 +1148,7 @@ vinyl_space_swap_index(struct space *old_space, struct space *new_space,
 	SWAP(old_lsm->opts, new_lsm->opts);
 	key_def_swap(old_lsm->key_def, new_lsm->key_def);
 	key_def_swap(old_lsm->cmp_def, new_lsm->cmp_def);
+	rlist_swap(&old_lsm->list, &new_lsm->list);
 
 	/* Update pointer to the primary key. */
 	vy_lsm_update_pk(old_lsm, vy_lsm(old_space->index_map[0]));
diff --git a/src/box/vy_lsm.c b/src/box/vy_lsm.c
index cb3c436f..2e3e7947 100644
--- a/src/box/vy_lsm.c
+++ b/src/box/vy_lsm.c
@@ -194,8 +194,12 @@ vy_lsm_new(struct vy_lsm_env *lsm_env, struct vy_cache_env *cache_env,
 	vy_range_heap_create(&lsm->range_heap);
 	rlist_create(&lsm->runs);
 	lsm->pk = pk;
-	if (pk != NULL)
+	if (pk != NULL) {
 		vy_lsm_ref(pk);
+		rlist_add_tail(&pk->list, &lsm->list);
+	} else {
+		rlist_create(&lsm->list);
+	}
 	lsm->mem_format = format;
 	tuple_format_ref(lsm->mem_format);
 	lsm->in_dump.pos = UINT32_MAX;
@@ -253,6 +257,7 @@ vy_lsm_delete(struct vy_lsm *lsm)
 
 	lsm->env->lsm_count--;
 
+	rlist_del(&lsm->list);
 	if (lsm->pk != NULL)
 		vy_lsm_unref(lsm->pk);
 
diff --git a/src/box/vy_lsm.h b/src/box/vy_lsm.h
index f0b7ec9c..9849e455 100644
--- a/src/box/vy_lsm.h
+++ b/src/box/vy_lsm.h
@@ -204,6 +204,8 @@ struct vy_lsm {
 	 * by each secondary index.
 	 */
 	struct vy_lsm *pk;
+	/** List of all LSM trees of the same space. */
+	struct rlist list;
 	/** LSM tree statistics. */
 	struct vy_lsm_stat stat;
 	/**
-- 
2.11.0