Merge 'Fix infinite loop when IO failure happens on allocating first page' from Preston Thorpe

closes #2919

Reviewed-by: Pedro Muniz (@pedrocarlo)

Closes #2968

.gitignore

@@ -4,6 +4,7 @@
 
 *.so
 *.ipynb
+*.o
 
 # Python
 .mypy_cache/

core/storage/pager.rs

@@ -1012,9 +1012,10 @@ impl Pager {
                     // Give a chance for the allocation to happen elsewhere
                     _ => {}
                 }
+            } else {
+                // Give a chance for the allocation to happen elsewhere
+                io_yield_one!(Completion::new_dummy());
             }
-            // Give a chance for the allocation to happen elsewhere
-            io_yield_one!(Completion::new_dummy());
         }
         Ok(IOResult::Done(()))
     }