1 files changed, 9 insertions, 0 deletions

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a533a18de98e..25f809dc45a3 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -346,6 +346,15 @@ void ext4_da_update_reserve_space(struct inode *inode,
                 used = ei->i_reserved_data_blocks;
         }
 
+        if (unlikely(ei->i_allocated_meta_blocks > ei->i_reserved_meta_blocks)) {
+                ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, allocated %d "
+                         "with only %d reserved metadata blocks\n", __func__,
+                         inode->i_ino, ei->i_allocated_meta_blocks,
+                         ei->i_reserved_meta_blocks);
+                WARN_ON(1);
+                ei->i_allocated_meta_blocks = ei->i_reserved_meta_blocks;
+        }
+
         /* Update per-inode reservations */
         ei->i_reserved_data_blocks -= used;
         ei->i_reserved_meta_blocks -= ei->i_allocated_meta_blocks;