diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c
index b120589d8517..3a0d9401cb9b 100644
--- a/fs/f2fs/extent_cache.c
+++ b/fs/f2fs/extent_cache.c
@@ -803,9 +803,8 @@ void f2fs_drop_extent_tree(struct inode *inode)
 	if (!f2fs_may_extent_tree(inode))
 		return;
 
-	set_inode_flag(inode, FI_NO_EXTENT);
-
 	write_lock(&et->lock);
+	set_inode_flag(inode, FI_NO_EXTENT);
 	__free_extent_tree(sbi, et);
 	if (et->largest.len) {
 		et->largest.len = 0;