--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -685,6 +685,7 @@ struct extent_tree_info {
 	struct mutex extent_tree_lock;	/* locking extent radix tree */
 	struct list_head extent_list;		/* lru list for shrinker */
 	spinlock_t extent_lock;			/* locking extent lru list */
+	spinlock_t et_read_lock;		/* locking read extent tree */
 	atomic_t total_ext_tree;		/* extent tree count */
 	struct list_head zombie_list;		/* extent zombie tree list */
 	atomic_t total_zombie_tree;		/* extent zombie tree count */
--- a/fs/f2fs/extent_cache.c
+++ b/fs/f2fs/extent_cache.c
@@ -675,13 +675,17 @@ static void __update_extent_tree_range(struct inode *inode,
 	struct extent_node *prev_en = NULL, *next_en = NULL;
 	struct extent_info ei, dei, prev;
 	struct rb_node **insert_p = NULL, *insert_parent = NULL;
+	struct extent_tree_info *eti = &sbi->extent_tree[type];
 	unsigned int fofs = tei->fofs, len = tei->len;
 	unsigned int end = fofs + len;
 	bool updated = false;
 	bool leftmost = false;
 
-	if (!et)
+	spin_lock(&eti->et_read_lock);
+	if (!et) {
+		spin_unlock(&eti->et_read_lock);
 		return;
+	}
 
 	if (type == EX_READ)
 		trace_f2fs_update_read_extent_tree_range(inode, fofs, len,
@@ -695,6 +699,7 @@ static void __update_extent_tree_range(struct inode *inode,
 	if (type == EX_READ) {
 		if (is_inode_flag_set(inode, FI_NO_EXTENT)) {
 			write_unlock(&et->lock);
+			spin_unlock(&eti->et_read_lock);
 			return;
 		}
 
@@ -824,6 +829,7 @@ static void __update_extent_tree_range(struct inode *inode,
 					insert_p, insert_parent, leftmost);
 out_read_extent_cache:
 	write_unlock(&et->lock);
+	spin_unlock(&eti->et_read_lock);
 
 	if (updated)
 		f2fs_mark_inode_dirty_sync(inode, true);
@@ -1190,7 +1196,9 @@ static void __destroy_extent_tree(struct inode *inode, enum extent_type type)
 	mutex_lock(&eti->extent_tree_lock);
 	f2fs_bug_on(sbi, atomic_read(&et->node_cnt));
 	radix_tree_delete(&eti->extent_tree_root, inode->i_ino);
+	spin_lock(&eti->et_read_lock);
 	kmem_cache_free(extent_tree_slab, et);
+	spin_unlock(&eti->et_read_lock);
 	atomic_dec(&eti->total_ext_tree);
 	mutex_unlock(&eti->extent_tree_lock);
 
@@ -1211,6 +1219,7 @@ static void __init_extent_tree_info(struct extent_tree_info *eti)
 	mutex_init(&eti->extent_tree_lock);
 	INIT_LIST_HEAD(&eti->extent_list);
 	spin_lock_init(&eti->extent_lock);
+	spin_lock_init(&eti->et_read_lock);
 	atomic_set(&eti->total_ext_tree, 0);
 	INIT_LIST_HEAD(&eti->zombie_list);
 	atomic_set(&eti->total_zombie_tree, 0);