diff --git a/kernel-shared/accessors.h b/kernel-shared/accessors.h
index 539c20d09..ab8c2d337 100644
--- a/kernel-shared/accessors.h
+++ b/kernel-shared/accessors.h
@@ -379,9 +379,13 @@ static inline u32 btrfs_extent_inline_ref_size(int type)
 	if (type == BTRFS_EXTENT_DATA_REF_KEY)
 		return sizeof(struct btrfs_extent_data_ref) +
 		       offsetof(struct btrfs_extent_inline_ref, offset);
+	if (type == BTRFS_EXTENT_OWNER_REF_KEY)
+		return sizeof(struct btrfs_extent_inline_ref);
 	return 0;
 }
 
+BTRFS_SETGET_FUNCS(extent_owner_ref_root_id, struct btrfs_extent_owner_ref, root_id, 64);
+
 /* struct btrfs_node */
 BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
 BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
@@ -979,6 +983,9 @@ BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
 		   flags, 64);
 BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
 		   rescan, 64);
+BTRFS_SETGET_FUNCS(qgroup_status_enable_gen, struct btrfs_qgroup_status_item,
+		   enable_gen, 64);
+
 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_generation,
 			 struct btrfs_qgroup_status_item, generation, 64);
 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_version,
@@ -987,6 +994,8 @@ BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_flags,
 			 struct btrfs_qgroup_status_item, flags, 64);
 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_rescan,
 			 struct btrfs_qgroup_status_item, rescan, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_enable_gen,
+			 struct btrfs_qgroup_status_item, enable_gen, 64);
 
 /* btrfs_qgroup_info_item */
 BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
diff --git a/kernel-shared/ctree.h b/kernel-shared/ctree.h
index 59533879b..bdfebd665 100644
--- a/kernel-shared/ctree.h
+++ b/kernel-shared/ctree.h
@@ -103,7 +103,8 @@ static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 nodesize)
 	 BTRFS_FEATURE_INCOMPAT_RAID1C34 |		\
 	 BTRFS_FEATURE_INCOMPAT_METADATA_UUID |		\
 	 BTRFS_FEATURE_INCOMPAT_ZONED |			\
-	 BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2)
+	 BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 | \
+	 BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA)
 #else
 #define BTRFS_FEATURE_INCOMPAT_SUPP			\
 	(BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF |		\
@@ -118,7 +119,8 @@ static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 nodesize)
 	 BTRFS_FEATURE_INCOMPAT_NO_HOLES |		\
 	 BTRFS_FEATURE_INCOMPAT_RAID1C34 |		\
 	 BTRFS_FEATURE_INCOMPAT_METADATA_UUID |		\
-	 BTRFS_FEATURE_INCOMPAT_ZONED)
+	 BTRFS_FEATURE_INCOMPAT_ZONED | \
+	 BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA)
 #endif
 
 /*
diff --git a/kernel-shared/uapi/btrfs.h b/kernel-shared/uapi/btrfs.h
index 85b04f89a..7e0078a5d 100644
--- a/kernel-shared/uapi/btrfs.h
+++ b/kernel-shared/uapi/btrfs.h
@@ -356,6 +356,7 @@ _static_assert(sizeof(struct btrfs_ioctl_fs_info_args) == 1024);
 #define BTRFS_FEATURE_INCOMPAT_RAID1C34		(1ULL << 11)
 #define BTRFS_FEATURE_INCOMPAT_ZONED		(1ULL << 12)
 #define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2	(1ULL << 13)
+#define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA	(1ULL << 16)
 
 struct btrfs_ioctl_feature_flags {
 	__u64 compat_flags;
diff --git a/kernel-shared/uapi/btrfs_tree.h b/kernel-shared/uapi/btrfs_tree.h
index ad555e705..29cf2f3d3 100644
--- a/kernel-shared/uapi/btrfs_tree.h
+++ b/kernel-shared/uapi/btrfs_tree.h
@@ -227,6 +227,8 @@
 
 #define BTRFS_SHARED_DATA_REF_KEY	184
 
+#define BTRFS_EXTENT_OWNER_REF_KEY	188
+
 /*
  * block groups give us hints into the extent allocation trees.  Which
  * blocks are free etc etc
@@ -783,6 +785,10 @@ struct btrfs_shared_data_ref {
 	__le32 count;
 } __attribute__ ((__packed__));
 
+struct btrfs_extent_owner_ref {
+	__le64 root_id;
+} __attribute__ ((__packed__));
+
 struct btrfs_extent_inline_ref {
 	__u8 type;
 	__le64 offset;
@@ -1199,10 +1205,12 @@ static inline __u16 btrfs_qgroup_level(__u64 qgroupid)
  * Turning qouta off and on again makes it inconsistent, too.
  */
 #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT	(1ULL << 2)
+#define BTRFS_QGROUP_STATUS_FLAG_SIMPLE_MODE	(1ULL << 3)
 
 #define BTRFS_QGROUP_STATUS_FLAGS_MASK	(BTRFS_QGROUP_STATUS_FLAG_ON |		\
 					 BTRFS_QGROUP_STATUS_FLAG_RESCAN |	\
-					 BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
+					 BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT |	\
+					 BTRFS_QGROUP_STATUS_FLAG_SIMPLE_MODE)
 
 #define BTRFS_QGROUP_STATUS_VERSION        1
 
@@ -1224,6 +1232,12 @@ struct btrfs_qgroup_status_item {
 	 * of the scan. It contains a logical address
 	 */
 	__le64 rescan;
+
+	/*
+	 * Used by simple quotas to ignore old extent deletions
+	 * Present iff incompat flag SIMPLE_QUOTA is set
+	 */
+	__le64 enable_gen;
 } __attribute__ ((__packed__));
 
 struct btrfs_qgroup_info_item {
