From abddea84f8aa4edf949c04663c9285ce5a24f489 Mon Sep 17 00:00:00 2001
From: Oleksii Gorbulin <a.gorbulin@ism-ukraine.com>
Date: Thu, 27 Dec 2018 23:54:55 +0200
Subject: [PATCH 1/3] 
 19482-Increase-product-quantity-with-disabled-Manage-Stock-when-place-order-is-failed
 Magento2:#19482 Increase product quantity with disabled Manage Stock when
 place order is failed

---
 .../CatalogInventory/Model/StockManagement.php       | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/app/code/Magento/CatalogInventory/Model/StockManagement.php b/app/code/Magento/CatalogInventory/Model/StockManagement.php
index 107645a45a390..1a01675ea6a21 100644
--- a/app/code/Magento/CatalogInventory/Model/StockManagement.php
+++ b/app/code/Magento/CatalogInventory/Model/StockManagement.php
@@ -148,7 +148,17 @@ public function revertProductsSale($items, $websiteId = null)
         //if (!$websiteId) {
         $websiteId = $this->stockConfiguration->getDefaultScopeId();
         //}
-        $this->qtyCounter->correctItemsQty($items, $websiteId, '+');
+        $revertItems = [];
+        foreach ($items as $productId => $qty) {
+            $stockItem = $this->stockRegistryProvider->getStockItem($productId, $websiteId);
+            $canSubtractQty = $stockItem->getItemId() && $this->canSubtractQty($stockItem);
+            if (!$canSubtractQty || !$this->stockConfiguration->isQty($stockItem->getTypeId())) {
+                continue;
+            }
+            $revertItems[$productId] = $qty;
+        }
+        $this->qtyCounter->correctItemsQty($revertItems, $websiteId, '+');
+
         return true;
     }
 

From 5d38ec623a83128be1fcaade22e9418d12a6c8a0 Mon Sep 17 00:00:00 2001
From: Oleksii Gorbulin <a.gorbulin@ism-ukraine.com>
Date: Fri, 28 Dec 2018 00:43:40 +0200
Subject: [PATCH 2/3] 
 19482-Increase-product-quantity-with-disabled-Manage-Stock-when-place-order-is-failed
 Increase product quantity with disabled Manage Stock when place order is
 failed #19482

---
 .../Magento/CatalogInventory/Model/StockManagement.php     | 7 ++++---
 .../Observer/RevertQuoteInventoryObserver.php              | 4 ++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/app/code/Magento/CatalogInventory/Model/StockManagement.php b/app/code/Magento/CatalogInventory/Model/StockManagement.php
index 1a01675ea6a21..78524ffecaa32 100644
--- a/app/code/Magento/CatalogInventory/Model/StockManagement.php
+++ b/app/code/Magento/CatalogInventory/Model/StockManagement.php
@@ -140,8 +140,9 @@ public function registerProductsSale($items, $websiteId = null)
 
     /**
      * @param string[] $items
-     * @param int $websiteId
-     * @return bool
+     * @param int|null $websiteId
+     *
+     * @return array|bool
      */
     public function revertProductsSale($items, $websiteId = null)
     {
@@ -159,7 +160,7 @@ public function revertProductsSale($items, $websiteId = null)
         }
         $this->qtyCounter->correctItemsQty($revertItems, $websiteId, '+');
 
-        return true;
+        return $revertItems;
     }
 
     /**
diff --git a/app/code/Magento/CatalogInventory/Observer/RevertQuoteInventoryObserver.php b/app/code/Magento/CatalogInventory/Observer/RevertQuoteInventoryObserver.php
index 93a50cc9a7a4d..ab21f32b3f62c 100644
--- a/app/code/Magento/CatalogInventory/Observer/RevertQuoteInventoryObserver.php
+++ b/app/code/Magento/CatalogInventory/Observer/RevertQuoteInventoryObserver.php
@@ -64,8 +64,8 @@ public function execute(EventObserver $observer)
     {
         $quote = $observer->getEvent()->getQuote();
         $items = $this->productQty->getProductQty($quote->getAllItems());
-        $this->stockManagement->revertProductsSale($items, $quote->getStore()->getWebsiteId());
-        $productIds = array_keys($items);
+        $revertedItems = $this->stockManagement->revertProductsSale($items, $quote->getStore()->getWebsiteId());
+        $productIds = array_keys($revertedItems);
         if (!empty($productIds)) {
             $this->stockIndexerProcessor->reindexList($productIds);
             $this->priceIndexer->reindexList($productIds);

From 582a1e7beee224839ee21b554d55c55af56f38e4 Mon Sep 17 00:00:00 2001
From: Pavel Bystritsky <p.bystritsky@yandex.ru>
Date: Mon, 21 Jan 2019 17:06:06 +0200
Subject: [PATCH 3/3] ENGCOM-3771: Static test fix.

---
 .../Magento/CatalogInventory/Model/StockManagement.php    | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/app/code/Magento/CatalogInventory/Model/StockManagement.php b/app/code/Magento/CatalogInventory/Model/StockManagement.php
index 78524ffecaa32..ed8fcef5dea03 100644
--- a/app/code/Magento/CatalogInventory/Model/StockManagement.php
+++ b/app/code/Magento/CatalogInventory/Model/StockManagement.php
@@ -83,6 +83,7 @@ public function __construct(
 
     /**
      * Subtract product qtys from stock.
+     *
      * Return array of items that require full save.
      *
      * @param string[] $items
@@ -139,10 +140,7 @@ public function registerProductsSale($items, $websiteId = null)
     }
 
     /**
-     * @param string[] $items
-     * @param int|null $websiteId
-     *
-     * @return array|bool
+     * @inheritdoc
      */
     public function revertProductsSale($items, $websiteId = null)
     {
@@ -204,6 +202,8 @@ protected function getProductType($productId)
     }
 
     /**
+     * Get stock resource.
+     *
      * @return ResourceStock
      */
     protected function getResource()